test: comprehensive integration tests for all API endpoints

Replace the existing integration test suite with a complete test covering
every registered API route. Tests use httptest with the real router and
a real DB connection (youpc.org mgmt schema).

Endpoint groups tested:
- Health, Auth (JWT validation, expired/invalid/wrong-secret)
- Current user (GET /api/me)
- Tenants (CRUD, auto-assign)
- Cases (CRUD with search/status filters)
- Parties (CRUD)
- Deadlines (CRUD, complete, batch create)
- Appointments (CRUD)
- Notes (CRUD)
- Dashboard
- Proceeding types & deadline rules
- Deadline calculator & determination (timeline, determine)
- Reports (cases, deadlines, workload, billing)
- Templates (CRUD, render)
- Time entries (CRUD, summary)
- Invoices (CRUD, status update)
- Billing rates (list, upsert)
- Notifications (list, unread count, mark read, preferences)
- Audit log (list, filtered)
- Case assignments (assign, unassign)
- Documents (list, meta)
- AI endpoints (availability check)
- Critical path E2E (case -> deadline -> appointment -> note -> time entry -> dashboard -> complete)

.claude/CLAUDE.md

@@ -18,6 +18,7 @@
 - ESLint must pass before committing
 - Import aliases: `@/` maps to `src/`
 - Bun as package manager (not npm/yarn/pnpm)
+- **API paths: NEVER include `/api/` prefix.** The `api` client in `lib/api.ts` already has `baseUrl="/api"`. Write `api.get("/cases")` NOT `api.get("/api/cases")`. The client auto-strips accidental `/api/` prefixes but don't rely on it.
 
 ## General
 

.m/config.yaml

@@ -52,7 +52,7 @@ head:
     infinity_mode: false
 capacity:
     global:
-        max_workers: 5
+        max_workers: 6
         max_heads: 3
     per_worker:
         max_tasks_lifetime: 0

CLAUDE.md

@@ -18,7 +18,7 @@ frontend/          Next.js 15 (TypeScript, Tailwind CSS, App Router)
 
 - **Frontend:** Next.js 15 with TypeScript, Tailwind CSS v4, App Router, Bun
 - **Backend:** Go (standard library HTTP server)
-- **Database:** Supabase (PostgreSQL) — `kanzlai` schema in flexsiebels instance
+- **Database:** Supabase (PostgreSQL) — `mgmt` schema in youpc.org instance
 - **Deploy:** Dokploy on mLake, domain: kanzlai.msbls.de
 
 ## Development

backend/cmd/server/main.go

@@ -5,6 +5,8 @@ import (
 	"net/http"
 	"os"
 
+	_ "github.com/lib/pq"
+
 	"mgit.msbls.de/m/KanzlAI-mGMT/internal/auth"
 	"mgit.msbls.de/m/KanzlAI-mGMT/internal/config"
 	"mgit.msbls.de/m/KanzlAI-mGMT/internal/db"
@@ -41,7 +43,7 @@ func main() {
 	notifSvc.Start()
 	defer notifSvc.Stop()
 
-	handler := router.New(database, authMW, cfg, calDAVSvc, notifSvc)
+	handler := router.New(database, authMW, cfg, calDAVSvc, notifSvc, database)
 
 	slog.Info("starting KanzlAI API server", "port", cfg.Port)
 	if err := http.ListenAndServe(":"+cfg.Port, handler); err != nil {

backend/internal/db/connection.go

@@ -13,8 +13,8 @@ func Connect(databaseURL string) (*sqlx.DB, error) {
 		return nil, fmt.Errorf("connecting to database: %w", err)
 	}
 
-	// Set search_path so queries use kanzlai schema by default
-	if _, err := db.Exec("SET search_path TO kanzlai, public"); err != nil {
+	// Set search_path so queries use mgmt schema by default
+	if _, err := db.Exec("SET search_path TO mgmt, public"); err != nil {
 		db.Close()
 		return nil, fmt.Errorf("setting search_path: %w", err)
 	}

backend/internal/handlers/ai.go

@@ -5,6 +5,8 @@ import (
 	"io"
 	"net/http"
 
+	"github.com/google/uuid"
+
 	"mgit.msbls.de/m/KanzlAI-mGMT/internal/auth"
 	"mgit.msbls.de/m/KanzlAI-mGMT/internal/services"
 )
@@ -115,3 +117,139 @@ func (h *AIHandler) SummarizeCase(w http.ResponseWriter, r *http.Request) {
 		"summary": summary,
 	})
 }
+
+// DraftDocument handles POST /api/ai/draft-document
+// Accepts JSON {"case_id": "uuid", "template_type": "string", "instructions": "string", "language": "de|en|fr"}.
+func (h *AIHandler) DraftDocument(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	var body struct {
+		CaseID       string `json:"case_id"`
+		TemplateType string `json:"template_type"`
+		Instructions string `json:"instructions"`
+		Language     string `json:"language"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+
+	if body.CaseID == "" {
+		writeError(w, http.StatusBadRequest, "case_id is required")
+		return
+	}
+	if body.TemplateType == "" {
+		writeError(w, http.StatusBadRequest, "template_type is required")
+		return
+	}
+
+	caseID, err := parseUUID(body.CaseID)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid case_id")
+		return
+	}
+
+	if len(body.Instructions) > maxDescriptionLen {
+		writeError(w, http.StatusBadRequest, "instructions exceeds maximum length")
+		return
+	}
+
+	draft, err := h.ai.DraftDocument(r.Context(), tenantID, caseID, body.TemplateType, body.Instructions, body.Language)
+	if err != nil {
+		internalError(w, "AI document drafting failed", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, draft)
+}
+
+// CaseStrategy handles POST /api/ai/case-strategy
+// Accepts JSON {"case_id": "uuid"}.
+func (h *AIHandler) CaseStrategy(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	var body struct {
+		CaseID string `json:"case_id"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+
+	if body.CaseID == "" {
+		writeError(w, http.StatusBadRequest, "case_id is required")
+		return
+	}
+
+	caseID, err := parseUUID(body.CaseID)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid case_id")
+		return
+	}
+
+	strategy, err := h.ai.CaseStrategy(r.Context(), tenantID, caseID)
+	if err != nil {
+		internalError(w, "AI case strategy analysis failed", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, strategy)
+}
+
+// SimilarCases handles POST /api/ai/similar-cases
+// Accepts JSON {"case_id": "uuid", "description": "string"}.
+func (h *AIHandler) SimilarCases(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	var body struct {
+		CaseID      string `json:"case_id"`
+		Description string `json:"description"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+
+	if body.CaseID == "" && body.Description == "" {
+		writeError(w, http.StatusBadRequest, "either case_id or description is required")
+		return
+	}
+
+	if len(body.Description) > maxDescriptionLen {
+		writeError(w, http.StatusBadRequest, "description exceeds maximum length")
+		return
+	}
+
+	var caseID uuid.UUID
+	if body.CaseID != "" {
+		var err error
+		caseID, err = parseUUID(body.CaseID)
+		if err != nil {
+			writeError(w, http.StatusBadRequest, "invalid case_id")
+			return
+		}
+	}
+
+	cases, err := h.ai.FindSimilarCases(r.Context(), tenantID, caseID, body.Description)
+	if err != nil {
+		internalError(w, "AI similar case search failed", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{
+		"cases": cases,
+		"count": len(cases),
+	})
+}

backend/internal/handlers/billing_rates.go

@@ -0,0 +1,66 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/auth"
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/services"
+)
+
+type BillingRateHandler struct {
+	svc *services.BillingRateService
+}
+
+func NewBillingRateHandler(svc *services.BillingRateService) *BillingRateHandler {
+	return &BillingRateHandler{svc: svc}
+}
+
+// List handles GET /api/billing-rates
+func (h *BillingRateHandler) List(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	rates, err := h.svc.List(r.Context(), tenantID)
+	if err != nil {
+		internalError(w, "failed to list billing rates", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{"billing_rates": rates})
+}
+
+// Upsert handles PUT /api/billing-rates
+func (h *BillingRateHandler) Upsert(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	var input services.UpsertBillingRateInput
+	if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid JSON body")
+		return
+	}
+
+	if input.Rate < 0 {
+		writeError(w, http.StatusBadRequest, "rate must be non-negative")
+		return
+	}
+	if input.ValidFrom == "" {
+		writeError(w, http.StatusBadRequest, "valid_from is required")
+		return
+	}
+
+	rate, err := h.svc.Upsert(r.Context(), tenantID, input)
+	if err != nil {
+		internalError(w, "failed to upsert billing rate", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, rate)
+}

backend/internal/handlers/invoices.go

@@ -0,0 +1,170 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/auth"
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/services"
+
+	"github.com/google/uuid"
+)
+
+type InvoiceHandler struct {
+	svc *services.InvoiceService
+}
+
+func NewInvoiceHandler(svc *services.InvoiceService) *InvoiceHandler {
+	return &InvoiceHandler{svc: svc}
+}
+
+// List handles GET /api/invoices?case_id=&status=
+func (h *InvoiceHandler) List(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	var caseID *uuid.UUID
+	if caseStr := r.URL.Query().Get("case_id"); caseStr != "" {
+		parsed, err := uuid.Parse(caseStr)
+		if err != nil {
+			writeError(w, http.StatusBadRequest, "invalid case_id")
+			return
+		}
+		caseID = &parsed
+	}
+
+	invoices, err := h.svc.List(r.Context(), tenantID, caseID, r.URL.Query().Get("status"))
+	if err != nil {
+		internalError(w, "failed to list invoices", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{"invoices": invoices})
+}
+
+// Get handles GET /api/invoices/{id}
+func (h *InvoiceHandler) Get(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	invoiceID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid invoice ID")
+		return
+	}
+
+	inv, err := h.svc.GetByID(r.Context(), tenantID, invoiceID)
+	if err != nil {
+		internalError(w, "failed to get invoice", err)
+		return
+	}
+	if inv == nil {
+		writeError(w, http.StatusNotFound, "invoice not found")
+		return
+	}
+
+	writeJSON(w, http.StatusOK, inv)
+}
+
+// Create handles POST /api/invoices
+func (h *InvoiceHandler) Create(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+	userID, _ := auth.UserFromContext(r.Context())
+
+	var input services.CreateInvoiceInput
+	if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid JSON body")
+		return
+	}
+
+	if input.ClientName == "" {
+		writeError(w, http.StatusBadRequest, "client_name is required")
+		return
+	}
+	if input.CaseID == uuid.Nil {
+		writeError(w, http.StatusBadRequest, "case_id is required")
+		return
+	}
+
+	inv, err := h.svc.Create(r.Context(), tenantID, userID, input)
+	if err != nil {
+		internalError(w, "failed to create invoice", err)
+		return
+	}
+
+	writeJSON(w, http.StatusCreated, inv)
+}
+
+// Update handles PUT /api/invoices/{id}
+func (h *InvoiceHandler) Update(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	invoiceID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid invoice ID")
+		return
+	}
+
+	var input services.UpdateInvoiceInput
+	if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid JSON body")
+		return
+	}
+
+	inv, err := h.svc.Update(r.Context(), tenantID, invoiceID, input)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	writeJSON(w, http.StatusOK, inv)
+}
+
+// UpdateStatus handles PATCH /api/invoices/{id}/status
+func (h *InvoiceHandler) UpdateStatus(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	invoiceID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid invoice ID")
+		return
+	}
+
+	var body struct {
+		Status string `json:"status"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid JSON body")
+		return
+	}
+	if body.Status == "" {
+		writeError(w, http.StatusBadRequest, "status is required")
+		return
+	}
+
+	inv, err := h.svc.UpdateStatus(r.Context(), tenantID, invoiceID, body.Status)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	writeJSON(w, http.StatusOK, inv)
+}

backend/internal/handlers/reports.go

@@ -0,0 +1,109 @@
+package handlers
+
+import (
+	"net/http"
+	"time"
+
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/auth"
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/services"
+)
+
+type ReportHandler struct {
+	svc *services.ReportingService
+}
+
+func NewReportHandler(svc *services.ReportingService) *ReportHandler {
+	return &ReportHandler{svc: svc}
+}
+
+// parseDateRange extracts from/to query params, defaulting to last 12 months.
+func parseDateRange(r *http.Request) (time.Time, time.Time) {
+	now := time.Now()
+	from := time.Date(now.Year()-1, now.Month(), 1, 0, 0, 0, 0, time.UTC)
+	to := time.Date(now.Year(), now.Month(), now.Day(), 23, 59, 59, 0, time.UTC)
+
+	if v := r.URL.Query().Get("from"); v != "" {
+		if t, err := time.Parse("2006-01-02", v); err == nil {
+			from = t
+		}
+	}
+	if v := r.URL.Query().Get("to"); v != "" {
+		if t, err := time.Parse("2006-01-02", v); err == nil {
+			to = time.Date(t.Year(), t.Month(), t.Day(), 23, 59, 59, 0, time.UTC)
+		}
+	}
+
+	return from, to
+}
+
+func (h *ReportHandler) Cases(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	from, to := parseDateRange(r)
+
+	data, err := h.svc.CaseReport(r.Context(), tenantID, from, to)
+	if err != nil {
+		internalError(w, "failed to generate case report", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, data)
+}
+
+func (h *ReportHandler) Deadlines(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	from, to := parseDateRange(r)
+
+	data, err := h.svc.DeadlineReport(r.Context(), tenantID, from, to)
+	if err != nil {
+		internalError(w, "failed to generate deadline report", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, data)
+}
+
+func (h *ReportHandler) Workload(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	from, to := parseDateRange(r)
+
+	data, err := h.svc.WorkloadReport(r.Context(), tenantID, from, to)
+	if err != nil {
+		internalError(w, "failed to generate workload report", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, data)
+}
+
+func (h *ReportHandler) Billing(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	from, to := parseDateRange(r)
+
+	data, err := h.svc.BillingReport(r.Context(), tenantID, from, to)
+	if err != nil {
+		internalError(w, "failed to generate billing report", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, data)
+}

backend/internal/handlers/templates.go

@@ -0,0 +1,328 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/auth"
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/services"
+)
+
+type TemplateHandler struct {
+	templates *services.TemplateService
+	cases     *services.CaseService
+	parties   *services.PartyService
+	deadlines *services.DeadlineService
+	tenants   *services.TenantService
+}
+
+func NewTemplateHandler(
+	templates *services.TemplateService,
+	cases *services.CaseService,
+	parties *services.PartyService,
+	deadlines *services.DeadlineService,
+	tenants *services.TenantService,
+) *TemplateHandler {
+	return &TemplateHandler{
+		templates: templates,
+		cases:     cases,
+		parties:   parties,
+		deadlines: deadlines,
+		tenants:   tenants,
+	}
+}
+
+// List handles GET /api/templates
+func (h *TemplateHandler) List(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	q := r.URL.Query()
+	limit, _ := strconv.Atoi(q.Get("limit"))
+	offset, _ := strconv.Atoi(q.Get("offset"))
+	limit, offset = clampPagination(limit, offset)
+
+	filter := services.TemplateFilter{
+		Category: q.Get("category"),
+		Search:   q.Get("search"),
+		Limit:    limit,
+		Offset:   offset,
+	}
+
+	if filter.Search != "" {
+		if msg := validateStringLength("search", filter.Search, maxSearchLen); msg != "" {
+			writeError(w, http.StatusBadRequest, msg)
+			return
+		}
+	}
+
+	templates, total, err := h.templates.List(r.Context(), tenantID, filter)
+	if err != nil {
+		internalError(w, "failed to list templates", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{
+		"data":  templates,
+		"total": total,
+	})
+}
+
+// Get handles GET /api/templates/{id}
+func (h *TemplateHandler) Get(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	templateID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid template ID")
+		return
+	}
+
+	t, err := h.templates.GetByID(r.Context(), tenantID, templateID)
+	if err != nil {
+		internalError(w, "failed to get template", err)
+		return
+	}
+	if t == nil {
+		writeError(w, http.StatusNotFound, "template not found")
+		return
+	}
+
+	writeJSON(w, http.StatusOK, t)
+}
+
+// Create handles POST /api/templates
+func (h *TemplateHandler) Create(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	var raw struct {
+		Name        string  `json:"name"`
+		Description *string `json:"description,omitempty"`
+		Category    string  `json:"category"`
+		Content     string  `json:"content"`
+		Variables   any     `json:"variables,omitempty"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&raw); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+
+	if raw.Name == "" {
+		writeError(w, http.StatusBadRequest, "name is required")
+		return
+	}
+	if msg := validateStringLength("name", raw.Name, maxTitleLen); msg != "" {
+		writeError(w, http.StatusBadRequest, msg)
+		return
+	}
+	if raw.Category == "" {
+		writeError(w, http.StatusBadRequest, "category is required")
+		return
+	}
+
+	var variables []byte
+	if raw.Variables != nil {
+		var err error
+		variables, err = json.Marshal(raw.Variables)
+		if err != nil {
+			writeError(w, http.StatusBadRequest, "invalid variables")
+			return
+		}
+	}
+
+	input := services.CreateTemplateInput{
+		Name:        raw.Name,
+		Description: raw.Description,
+		Category:    raw.Category,
+		Content:     raw.Content,
+		Variables:   variables,
+	}
+
+	t, err := h.templates.Create(r.Context(), tenantID, input)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	writeJSON(w, http.StatusCreated, t)
+}
+
+// Update handles PUT /api/templates/{id}
+func (h *TemplateHandler) Update(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	templateID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid template ID")
+		return
+	}
+
+	var raw struct {
+		Name        *string `json:"name,omitempty"`
+		Description *string `json:"description,omitempty"`
+		Category    *string `json:"category,omitempty"`
+		Content     *string `json:"content,omitempty"`
+		Variables   any     `json:"variables,omitempty"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&raw); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid request body")
+		return
+	}
+
+	if raw.Name != nil {
+		if msg := validateStringLength("name", *raw.Name, maxTitleLen); msg != "" {
+			writeError(w, http.StatusBadRequest, msg)
+			return
+		}
+	}
+
+	var variables []byte
+	if raw.Variables != nil {
+		variables, err = json.Marshal(raw.Variables)
+		if err != nil {
+			writeError(w, http.StatusBadRequest, "invalid variables")
+			return
+		}
+	}
+
+	input := services.UpdateTemplateInput{
+		Name:        raw.Name,
+		Description: raw.Description,
+		Category:    raw.Category,
+		Content:     raw.Content,
+		Variables:   variables,
+	}
+
+	t, err := h.templates.Update(r.Context(), tenantID, templateID, input)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+	if t == nil {
+		writeError(w, http.StatusNotFound, "template not found")
+		return
+	}
+
+	writeJSON(w, http.StatusOK, t)
+}
+
+// Delete handles DELETE /api/templates/{id}
+func (h *TemplateHandler) Delete(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	templateID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid template ID")
+		return
+	}
+
+	if err := h.templates.Delete(r.Context(), tenantID, templateID); err != nil {
+		writeError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	writeJSON(w, http.StatusOK, map[string]string{"status": "deleted"})
+}
+
+// Render handles POST /api/templates/{id}/render?case_id=X
+func (h *TemplateHandler) Render(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	userID, _ := auth.UserFromContext(r.Context())
+
+	templateID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid template ID")
+		return
+	}
+
+	// Get template
+	tmpl, err := h.templates.GetByID(r.Context(), tenantID, templateID)
+	if err != nil {
+		internalError(w, "failed to get template", err)
+		return
+	}
+	if tmpl == nil {
+		writeError(w, http.StatusNotFound, "template not found")
+		return
+	}
+
+	// Build render data
+	data := services.RenderData{}
+
+	// Case data (optional)
+	caseIDStr := r.URL.Query().Get("case_id")
+	if caseIDStr != "" {
+		caseID, err := parseUUID(caseIDStr)
+		if err != nil {
+			writeError(w, http.StatusBadRequest, "invalid case_id")
+			return
+		}
+
+		caseDetail, err := h.cases.GetByID(r.Context(), tenantID, caseID)
+		if err != nil {
+			internalError(w, "failed to get case", err)
+			return
+		}
+		if caseDetail == nil {
+			writeError(w, http.StatusNotFound, "case not found")
+			return
+		}
+		data.Case = &caseDetail.Case
+		data.Parties = caseDetail.Parties
+
+		// Get next upcoming deadline for this case
+		deadlines, err := h.deadlines.ListForCase(tenantID, caseID)
+		if err == nil && len(deadlines) > 0 {
+			// Find next non-completed deadline
+			for i := range deadlines {
+				if deadlines[i].Status != "completed" {
+					data.Deadline = &deadlines[i]
+					break
+				}
+			}
+		}
+	}
+
+	// Tenant data
+	tenant, err := h.tenants.GetByID(r.Context(), tenantID)
+	if err == nil && tenant != nil {
+		data.Tenant = tenant
+	}
+
+	// User data (userID from context — detailed name/email would need a user table lookup)
+	data.UserName = userID.String()
+	data.UserEmail = ""
+
+	rendered := h.templates.Render(tmpl, data)
+
+	writeJSON(w, http.StatusOK, map[string]any{
+		"content":     rendered,
+		"template_id": tmpl.ID,
+		"name":        tmpl.Name,
+	})
+}

backend/internal/handlers/tenant_handler.go

@@ -356,6 +356,71 @@ func (h *TenantHandler) UpdateMemberRole(w http.ResponseWriter, r *http.Request)
 	jsonResponse(w, map[string]string{"status": "updated"}, http.StatusOK)
 }
 
+// AutoAssign handles POST /api/tenants/auto-assign — checks if the user's email domain
+// matches any tenant's auto_assign_domains and assigns them if so.
+func (h *TenantHandler) AutoAssign(w http.ResponseWriter, r *http.Request) {
+	userID, ok := auth.UserFromContext(r.Context())
+	if !ok {
+		http.Error(w, "unauthorized", http.StatusUnauthorized)
+		return
+	}
+
+	var req struct {
+		Email string `json:"email"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		jsonError(w, "invalid request body", http.StatusBadRequest)
+		return
+	}
+	if req.Email == "" {
+		jsonError(w, "email is required", http.StatusBadRequest)
+		return
+	}
+
+	// Extract domain from email
+	parts := splitEmail(req.Email)
+	if parts == "" {
+		jsonError(w, "invalid email format", http.StatusBadRequest)
+		return
+	}
+
+	result, err := h.svc.AutoAssignByDomain(r.Context(), userID, parts)
+	if err != nil {
+		slog.Error("auto-assign failed", "error", err)
+		jsonError(w, "internal error", http.StatusInternalServerError)
+		return
+	}
+
+	if result == nil {
+		jsonResponse(w, map[string]any{"assigned": false}, http.StatusOK)
+		return
+	}
+
+	jsonResponse(w, map[string]any{
+		"assigned":  true,
+		"tenant_id": result.ID,
+		"name":      result.Name,
+		"slug":      result.Slug,
+		"role":      result.Role,
+		"settings":  result.Settings,
+	}, http.StatusOK)
+}
+
+// splitEmail extracts the domain part from an email address.
+func splitEmail(email string) string {
+	at := -1
+	for i, c := range email {
+		if c == '@' {
+			at = i
+			break
+		}
+	}
+	if at < 0 || at >= len(email)-1 {
+		return ""
+	}
+	return email[at+1:]
+}
+
 // GetMe handles GET /api/me — returns the current user's ID and role in the active tenant.
 func (h *TenantHandler) GetMe(w http.ResponseWriter, r *http.Request) {
 	userID, ok := auth.UserFromContext(r.Context())
@@ -370,11 +435,26 @@ func (h *TenantHandler) GetMe(w http.ResponseWriter, r *http.Request) {
 	// Get user's permissions for frontend UI
 	perms := auth.GetRolePermissions(role)
 
+	// Check if tenant is in demo mode
+	isDemo := false
+	if tenant, err := h.svc.GetByID(r.Context(), tenantID); err == nil && tenant != nil {
+		var settings map[string]json.RawMessage
+		if json.Unmarshal(tenant.Settings, &settings) == nil {
+			if demoRaw, ok := settings["demo"]; ok {
+				var demo bool
+				if json.Unmarshal(demoRaw, &demo) == nil {
+					isDemo = demo
+				}
+			}
+		}
+	}
+
 	jsonResponse(w, map[string]any{
 		"user_id":     userID,
 		"tenant_id":   tenantID,
 		"role":        role,
 		"permissions": perms,
+		"is_demo":     isDemo,
 	}, http.StatusOK)
 }
 

backend/internal/handlers/time_entries.go

@@ -0,0 +1,209 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/auth"
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/services"
+
+	"github.com/google/uuid"
+)
+
+type TimeEntryHandler struct {
+	svc *services.TimeEntryService
+}
+
+func NewTimeEntryHandler(svc *services.TimeEntryService) *TimeEntryHandler {
+	return &TimeEntryHandler{svc: svc}
+}
+
+// ListForCase handles GET /api/cases/{id}/time-entries
+func (h *TimeEntryHandler) ListForCase(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	caseID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid case ID")
+		return
+	}
+
+	entries, err := h.svc.ListForCase(r.Context(), tenantID, caseID)
+	if err != nil {
+		internalError(w, "failed to list time entries", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{"time_entries": entries})
+}
+
+// List handles GET /api/time-entries?case_id=&user_id=&from=&to=
+func (h *TimeEntryHandler) List(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
+	offset, _ := strconv.Atoi(r.URL.Query().Get("offset"))
+	limit, offset = clampPagination(limit, offset)
+
+	filter := services.TimeEntryFilter{
+		From:   r.URL.Query().Get("from"),
+		To:     r.URL.Query().Get("to"),
+		Limit:  limit,
+		Offset: offset,
+	}
+
+	if caseStr := r.URL.Query().Get("case_id"); caseStr != "" {
+		caseID, err := uuid.Parse(caseStr)
+		if err != nil {
+			writeError(w, http.StatusBadRequest, "invalid case_id")
+			return
+		}
+		filter.CaseID = &caseID
+	}
+	if userStr := r.URL.Query().Get("user_id"); userStr != "" {
+		userID, err := uuid.Parse(userStr)
+		if err != nil {
+			writeError(w, http.StatusBadRequest, "invalid user_id")
+			return
+		}
+		filter.UserID = &userID
+	}
+
+	entries, total, err := h.svc.List(r.Context(), tenantID, filter)
+	if err != nil {
+		internalError(w, "failed to list time entries", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{
+		"time_entries": entries,
+		"total":        total,
+	})
+}
+
+// Create handles POST /api/cases/{id}/time-entries
+func (h *TimeEntryHandler) Create(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+	userID, _ := auth.UserFromContext(r.Context())
+
+	caseID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid case ID")
+		return
+	}
+
+	var input services.CreateTimeEntryInput
+	if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid JSON body")
+		return
+	}
+	input.CaseID = caseID
+
+	if input.Description == "" {
+		writeError(w, http.StatusBadRequest, "description is required")
+		return
+	}
+	if input.DurationMinutes <= 0 {
+		writeError(w, http.StatusBadRequest, "duration_minutes must be positive")
+		return
+	}
+	if input.Date == "" {
+		writeError(w, http.StatusBadRequest, "date is required")
+		return
+	}
+
+	entry, err := h.svc.Create(r.Context(), tenantID, userID, input)
+	if err != nil {
+		internalError(w, "failed to create time entry", err)
+		return
+	}
+
+	writeJSON(w, http.StatusCreated, entry)
+}
+
+// Update handles PUT /api/time-entries/{id}
+func (h *TimeEntryHandler) Update(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	entryID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid time entry ID")
+		return
+	}
+
+	var input services.UpdateTimeEntryInput
+	if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid JSON body")
+		return
+	}
+
+	entry, err := h.svc.Update(r.Context(), tenantID, entryID, input)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	writeJSON(w, http.StatusOK, entry)
+}
+
+// Delete handles DELETE /api/time-entries/{id}
+func (h *TimeEntryHandler) Delete(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	entryID, err := parsePathUUID(r, "id")
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "invalid time entry ID")
+		return
+	}
+
+	if err := h.svc.Delete(r.Context(), tenantID, entryID); err != nil {
+		writeError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	writeJSON(w, http.StatusOK, map[string]string{"status": "deleted"})
+}
+
+// Summary handles GET /api/time-entries/summary?group_by=case|user|month&from=&to=
+func (h *TimeEntryHandler) Summary(w http.ResponseWriter, r *http.Request) {
+	tenantID, ok := auth.TenantFromContext(r.Context())
+	if !ok {
+		writeError(w, http.StatusForbidden, "missing tenant")
+		return
+	}
+
+	groupBy := r.URL.Query().Get("group_by")
+	if groupBy == "" {
+		groupBy = "case"
+	}
+
+	summaries, err := h.svc.Summary(r.Context(), tenantID, groupBy,
+		r.URL.Query().Get("from"), r.URL.Query().Get("to"))
+	if err != nil {
+		internalError(w, "failed to get summary", err)
+		return
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{"summary": summaries})
+}

backend/internal/models/billing_rate.go

@@ -0,0 +1,18 @@
+package models
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type BillingRate struct {
+	ID        uuid.UUID  `db:"id" json:"id"`
+	TenantID  uuid.UUID  `db:"tenant_id" json:"tenant_id"`
+	UserID    *uuid.UUID `db:"user_id" json:"user_id,omitempty"`
+	Rate      float64    `db:"rate" json:"rate"`
+	Currency  string     `db:"currency" json:"currency"`
+	ValidFrom string     `db:"valid_from" json:"valid_from"`
+	ValidTo   *string    `db:"valid_to" json:"valid_to,omitempty"`
+	CreatedAt time.Time  `db:"created_at" json:"created_at"`
+}

backend/internal/models/document_template.go

@@ -0,0 +1,21 @@
+package models
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type DocumentTemplate struct {
+	ID          uuid.UUID       `db:"id" json:"id"`
+	TenantID    *uuid.UUID      `db:"tenant_id" json:"tenant_id,omitempty"`
+	Name        string          `db:"name" json:"name"`
+	Description *string         `db:"description" json:"description,omitempty"`
+	Category    string          `db:"category" json:"category"`
+	Content     string          `db:"content" json:"content"`
+	Variables   json.RawMessage `db:"variables" json:"variables"`
+	IsSystem    bool            `db:"is_system" json:"is_system"`
+	CreatedAt   time.Time       `db:"created_at" json:"created_at"`
+	UpdatedAt   time.Time       `db:"updated_at" json:"updated_at"`
+}

backend/internal/models/invoice.go

@@ -0,0 +1,38 @@
+package models
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type Invoice struct {
+	ID            uuid.UUID       `db:"id" json:"id"`
+	TenantID      uuid.UUID       `db:"tenant_id" json:"tenant_id"`
+	CaseID        uuid.UUID       `db:"case_id" json:"case_id"`
+	InvoiceNumber string          `db:"invoice_number" json:"invoice_number"`
+	ClientName    string          `db:"client_name" json:"client_name"`
+	ClientAddress *string         `db:"client_address" json:"client_address,omitempty"`
+	Items         json.RawMessage `db:"items" json:"items"`
+	Subtotal      float64         `db:"subtotal" json:"subtotal"`
+	TaxRate       float64         `db:"tax_rate" json:"tax_rate"`
+	TaxAmount     float64         `db:"tax_amount" json:"tax_amount"`
+	Total         float64         `db:"total" json:"total"`
+	Status        string          `db:"status" json:"status"`
+	IssuedAt      *string         `db:"issued_at" json:"issued_at,omitempty"`
+	DueAt         *string         `db:"due_at" json:"due_at,omitempty"`
+	PaidAt        *time.Time      `db:"paid_at" json:"paid_at,omitempty"`
+	Notes         *string         `db:"notes" json:"notes,omitempty"`
+	CreatedBy     uuid.UUID       `db:"created_by" json:"created_by"`
+	CreatedAt     time.Time       `db:"created_at" json:"created_at"`
+	UpdatedAt     time.Time       `db:"updated_at" json:"updated_at"`
+}
+
+type InvoiceItem struct {
+	Description     string  `json:"description"`
+	DurationMinutes int     `json:"duration_minutes,omitempty"`
+	HourlyRate      float64 `json:"hourly_rate,omitempty"`
+	Amount          float64 `json:"amount"`
+	TimeEntryID     *string `json:"time_entry_id,omitempty"`
+}

backend/internal/models/time_entry.go

@@ -0,0 +1,24 @@
+package models
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type TimeEntry struct {
+	ID              uuid.UUID  `db:"id" json:"id"`
+	TenantID        uuid.UUID  `db:"tenant_id" json:"tenant_id"`
+	CaseID          uuid.UUID  `db:"case_id" json:"case_id"`
+	UserID          uuid.UUID  `db:"user_id" json:"user_id"`
+	Date            string     `db:"date" json:"date"`
+	DurationMinutes int        `db:"duration_minutes" json:"duration_minutes"`
+	Description     string     `db:"description" json:"description"`
+	Activity        *string    `db:"activity" json:"activity,omitempty"`
+	Billable        bool       `db:"billable" json:"billable"`
+	Billed          bool       `db:"billed" json:"billed"`
+	InvoiceID       *uuid.UUID `db:"invoice_id" json:"invoice_id,omitempty"`
+	HourlyRate      *float64   `db:"hourly_rate" json:"hourly_rate,omitempty"`
+	CreatedAt       time.Time  `db:"created_at" json:"created_at"`
+	UpdatedAt       time.Time  `db:"updated_at" json:"updated_at"`
+}

backend/internal/router/router.go

@@ -15,7 +15,7 @@ import (
 	"mgit.msbls.de/m/KanzlAI-mGMT/internal/services"
 )
 
-func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *services.CalDAVService, notifSvc *services.NotificationService) http.Handler {
+func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *services.CalDAVService, notifSvc *services.NotificationService, youpcDB ...*sqlx.DB) http.Handler {
 	mux := http.NewServeMux()
 
 	// Services
@@ -32,11 +32,20 @@ func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *se
 	storageCli := services.NewStorageClient(cfg.SupabaseURL, cfg.SupabaseServiceKey)
 	documentSvc := services.NewDocumentService(db, storageCli, auditSvc)
 	assignmentSvc := services.NewCaseAssignmentService(db)
+	reportSvc := services.NewReportingService(db)
+	timeEntrySvc := services.NewTimeEntryService(db, auditSvc)
+	invoiceSvc := services.NewInvoiceService(db, auditSvc)
+	billingRateSvc := services.NewBillingRateService(db, auditSvc)
+	templateSvc := services.NewTemplateService(db, auditSvc)
 
 	// AI service (optional — only if API key is configured)
 	var aiH *handlers.AIHandler
 	if cfg.AnthropicAPIKey != "" {
-		aiSvc := services.NewAIService(cfg.AnthropicAPIKey, db)
+		var ydb *sqlx.DB
+		if len(youpcDB) > 0 {
+			ydb = youpcDB[0]
+		}
+		aiSvc := services.NewAIService(cfg.AnthropicAPIKey, db, ydb)
 		aiH = handlers.NewAIHandler(aiSvc)
 	}
 
@@ -67,6 +76,11 @@ func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *se
 	eventH := handlers.NewCaseEventHandler(db)
 	docH := handlers.NewDocumentHandler(documentSvc)
 	assignmentH := handlers.NewCaseAssignmentHandler(assignmentSvc)
+	reportH := handlers.NewReportHandler(reportSvc)
+	timeH := handlers.NewTimeEntryHandler(timeEntrySvc)
+	invoiceH := handlers.NewInvoiceHandler(invoiceSvc)
+	billingH := handlers.NewBillingRateHandler(billingRateSvc)
+	templateH := handlers.NewTemplateHandler(templateSvc, caseSvc, partySvc, deadlineSvc, tenantSvc)
 
 	// Public routes
 	mux.HandleFunc("GET /health", handleHealth(db))
@@ -75,6 +89,7 @@ func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *se
 	api := http.NewServeMux()
 
 	// Tenant management (no tenant resolver — these operate across tenants)
+	api.HandleFunc("POST /api/tenants/auto-assign", tenantH.AutoAssign)
 	api.HandleFunc("POST /api/tenants", tenantH.CreateTenant)
 	api.HandleFunc("GET /api/tenants", tenantH.ListTenants)
 	api.HandleFunc("GET /api/tenants/{id}", tenantH.GetTenant)
@@ -164,7 +179,7 @@ func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *se
 	scoped.HandleFunc("GET /api/dashboard", dashboardH.Get)
 
 	// Audit log
-	scoped.HandleFunc("GET /api/audit-log", auditH.List)
+	scoped.HandleFunc("GET /api/audit-log", perm(auth.PermViewAuditLog, auditH.List))
 
 	// Documents — all can upload, delete checked in handler (own vs all)
 	scoped.HandleFunc("GET /api/cases/{id}/documents", docH.ListByCase)
@@ -178,6 +193,9 @@ func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *se
 		aiLimiter := middleware.NewTokenBucket(5.0/60.0, 10)
 		scoped.HandleFunc("POST /api/ai/extract-deadlines", perm(auth.PermAIExtraction, aiLimiter.LimitFunc(aiH.ExtractDeadlines)))
 		scoped.HandleFunc("POST /api/ai/summarize-case", perm(auth.PermAIExtraction, aiLimiter.LimitFunc(aiH.SummarizeCase)))
+		scoped.HandleFunc("POST /api/ai/draft-document", perm(auth.PermAIExtraction, aiLimiter.LimitFunc(aiH.DraftDocument)))
+		scoped.HandleFunc("POST /api/ai/case-strategy", perm(auth.PermAIExtraction, aiLimiter.LimitFunc(aiH.CaseStrategy)))
+		scoped.HandleFunc("POST /api/ai/similar-cases", perm(auth.PermAIExtraction, aiLimiter.LimitFunc(aiH.SimilarCases)))
 	}
 
 	// Notifications
@@ -197,6 +215,39 @@ func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *se
 		scoped.HandleFunc("GET /api/caldav/status", calDAVH.GetStatus)
 	}
 
+	// Reports — cases/deadlines/workload open to all, billing restricted
+	scoped.HandleFunc("GET /api/reports/cases", reportH.Cases)
+	scoped.HandleFunc("GET /api/reports/deadlines", reportH.Deadlines)
+	scoped.HandleFunc("GET /api/reports/workload", reportH.Workload)
+	scoped.HandleFunc("GET /api/reports/billing", perm(auth.PermManageBilling, reportH.Billing))
+
+	// Time entries — all can view/create, tied to cases
+	scoped.HandleFunc("GET /api/cases/{id}/time-entries", timeH.ListForCase)
+	scoped.HandleFunc("GET /api/time-entries", timeH.List)
+	scoped.HandleFunc("POST /api/cases/{id}/time-entries", timeH.Create)
+	scoped.HandleFunc("PUT /api/time-entries/{id}", timeH.Update)
+	scoped.HandleFunc("DELETE /api/time-entries/{id}", timeH.Delete)
+	scoped.HandleFunc("GET /api/time-entries/summary", timeH.Summary)
+
+	// Invoices — billing permission required
+	scoped.HandleFunc("GET /api/invoices", perm(auth.PermManageBilling, invoiceH.List))
+	scoped.HandleFunc("GET /api/invoices/{id}", perm(auth.PermManageBilling, invoiceH.Get))
+	scoped.HandleFunc("POST /api/invoices", perm(auth.PermManageBilling, invoiceH.Create))
+	scoped.HandleFunc("PUT /api/invoices/{id}", perm(auth.PermManageBilling, invoiceH.Update))
+	scoped.HandleFunc("PATCH /api/invoices/{id}/status", perm(auth.PermManageBilling, invoiceH.UpdateStatus))
+
+	// Billing rates — billing permission required
+	scoped.HandleFunc("GET /api/billing-rates", perm(auth.PermManageBilling, billingH.List))
+	scoped.HandleFunc("PUT /api/billing-rates", perm(auth.PermManageBilling, billingH.Upsert))
+
+	// Document templates — all can view/use, manage needs case creation permission
+	scoped.HandleFunc("GET /api/templates", templateH.List)
+	scoped.HandleFunc("GET /api/templates/{id}", templateH.Get)
+	scoped.HandleFunc("POST /api/templates", perm(auth.PermCreateCase, templateH.Create))
+	scoped.HandleFunc("PUT /api/templates/{id}", perm(auth.PermCreateCase, templateH.Update))
+	scoped.HandleFunc("DELETE /api/templates/{id}", perm(auth.PermCreateCase, templateH.Delete))
+	scoped.HandleFunc("POST /api/templates/{id}/render", templateH.Render)
+
 	// Wire: auth -> tenant routes go directly, scoped routes get tenant resolver
 	api.Handle("/api/", tenantResolver.Resolve(scoped))
 

backend/internal/services/ai_service.go

@@ -5,6 +5,7 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
+	"strings"
 	"time"
 
 	"github.com/anthropics/anthropic-sdk-go"
@@ -18,11 +19,12 @@ import (
 type AIService struct {
 	client anthropic.Client
 	db     *sqlx.DB
+	youpcDB *sqlx.DB // read-only connection to youpc.org for similar case finder (may be nil)
 }
 
-func NewAIService(apiKey string, db *sqlx.DB) *AIService {
+func NewAIService(apiKey string, db *sqlx.DB, youpcDB *sqlx.DB) *AIService {
 	client := anthropic.NewClient(option.WithAPIKey(apiKey))
-	return &AIService{client: client, db: db}
+	return &AIService{client: client, db: db, youpcDB: youpcDB}
 }
 
 // ExtractedDeadline represents a deadline extracted by AI from a document.
@@ -281,3 +283,726 @@ func (s *AIService) SummarizeCase(ctx context.Context, tenantID, caseID uuid.UUI
 
 	return summary, nil
 }
+
+// --- Document Drafting ---
+
+// DocumentDraft represents an AI-generated document draft.
+type DocumentDraft struct {
+	Title    string `json:"title"`
+	Content  string `json:"content"`
+	Language string `json:"language"`
+}
+
+// templateDescriptions maps template type IDs to descriptions for Claude.
+var templateDescriptions = map[string]string{
+	"klageschrift":      "Klageschrift (Statement of Claim) — formal complaint initiating legal proceedings",
+	"klageerwiderung":   "Klageerwiderung (Statement of Defence) — formal response to a statement of claim",
+	"abmahnung":         "Abmahnung (Cease and Desist Letter) — formal warning letter demanding cessation of an activity",
+	"schriftsatz":       "Schriftsatz (Legal Brief) — formal legal submission to the court",
+	"berufung":          "Berufungsschrift (Appeal Brief) — formal appeal against a court decision",
+	"antrag":            "Antrag (Motion/Application) — formal application or motion to the court",
+	"stellungnahme":     "Stellungnahme (Statement/Position Paper) — formal response or position paper",
+	"gutachten":         "Gutachten (Legal Opinion/Expert Report) — detailed legal analysis or opinion",
+	"vertrag":           "Vertrag (Contract/Agreement) — legal contract or agreement between parties",
+	"vollmacht":         "Vollmacht (Power of Attorney) — formal authorization document",
+	"upc_claim":         "UPC Statement of Claim — claim filed at the Unified Patent Court",
+	"upc_defence":       "UPC Statement of Defence — defence filed at the Unified Patent Court",
+	"upc_counterclaim":  "UPC Counterclaim for Revocation — counterclaim for patent revocation at the UPC",
+	"upc_injunction":    "UPC Application for Provisional Measures — application for injunctive relief at the UPC",
+}
+
+const draftDocumentSystemPrompt = `You are an expert legal document drafter for German and UPC (Unified Patent Court) patent litigation.
+
+You draft professional legal documents in the requested language, following proper legal formatting conventions.
+
+Guidelines:
+- Use proper legal structure with numbered sections and paragraphs
+- Include standard legal formalities (headers, salutations, signatures block)
+- Reference relevant legal provisions (BGB, ZPO, UPC Rules of Procedure, etc.)
+- Use precise legal terminology appropriate for the jurisdiction
+- Include placeholders in [BRACKETS] for information that needs to be filled in
+- Base the content on the provided case data and instructions
+- Output the document as clean text with proper formatting`
+
+// DraftDocument generates an AI-drafted legal document based on case data and a template type.
+func (s *AIService) DraftDocument(ctx context.Context, tenantID, caseID uuid.UUID, templateType, instructions, language string) (*DocumentDraft, error) {
+	if language == "" {
+		language = "de"
+	}
+
+	langLabel := "German"
+	if language == "en" {
+		langLabel = "English"
+	} else if language == "fr" {
+		langLabel = "French"
+	}
+
+	// Load case data
+	var c models.Case
+	if err := s.db.GetContext(ctx, &c,
+		"SELECT * FROM cases WHERE id = $1 AND tenant_id = $2", caseID, tenantID); err != nil {
+		return nil, fmt.Errorf("loading case: %w", err)
+	}
+
+	// Load parties
+	var parties []models.Party
+	_ = s.db.SelectContext(ctx, &parties,
+		"SELECT * FROM parties WHERE case_id = $1 AND tenant_id = $2", caseID, tenantID)
+
+	// Load recent events
+	var events []models.CaseEvent
+	_ = s.db.SelectContext(ctx, &events,
+		"SELECT * FROM case_events WHERE case_id = $1 AND tenant_id = $2 ORDER BY created_at DESC LIMIT 15",
+		caseID, tenantID)
+
+	// Load active deadlines
+	var deadlines []models.Deadline
+	_ = s.db.SelectContext(ctx, &deadlines,
+		"SELECT * FROM deadlines WHERE case_id = $1 AND tenant_id = $2 AND status = 'active' ORDER BY due_date ASC LIMIT 10",
+		caseID, tenantID)
+
+	// Load documents metadata for context
+	var documents []models.Document
+	_ = s.db.SelectContext(ctx, &documents,
+		"SELECT id, title, doc_type, created_at FROM documents WHERE case_id = $1 AND tenant_id = $2 ORDER BY created_at DESC LIMIT 10",
+		caseID, tenantID)
+
+	// Build context
+	var b strings.Builder
+	b.WriteString(fmt.Sprintf("Case: %s — %s\nStatus: %s\n", c.CaseNumber, c.Title, c.Status))
+	if c.Court != nil {
+		b.WriteString(fmt.Sprintf("Court: %s\n", *c.Court))
+	}
+	if c.CourtRef != nil {
+		b.WriteString(fmt.Sprintf("Court Reference: %s\n", *c.CourtRef))
+	}
+	if c.CaseType != nil {
+		b.WriteString(fmt.Sprintf("Type: %s\n", *c.CaseType))
+	}
+
+	if len(parties) > 0 {
+		b.WriteString("\nParties:\n")
+		for _, p := range parties {
+			role := "unknown role"
+			if p.Role != nil {
+				role = *p.Role
+			}
+			b.WriteString(fmt.Sprintf("- %s (%s)", p.Name, role))
+			if p.Representative != nil {
+				b.WriteString(fmt.Sprintf(" — represented by %s", *p.Representative))
+			}
+			b.WriteString("\n")
+		}
+	}
+
+	if len(events) > 0 {
+		b.WriteString("\nRecent Events:\n")
+		for _, e := range events {
+			b.WriteString(fmt.Sprintf("- [%s] %s", e.CreatedAt.Format("2006-01-02"), e.Title))
+			if e.Description != nil {
+				b.WriteString(fmt.Sprintf(": %s", *e.Description))
+			}
+			b.WriteString("\n")
+		}
+	}
+
+	if len(deadlines) > 0 {
+		b.WriteString("\nUpcoming Deadlines:\n")
+		for _, d := range deadlines {
+			b.WriteString(fmt.Sprintf("- %s: due %s\n", d.Title, d.DueDate))
+		}
+	}
+
+	templateDesc, ok := templateDescriptions[templateType]
+	if !ok {
+		templateDesc = templateType
+	}
+
+	prompt := fmt.Sprintf(`Draft a %s for this case in %s.
+
+Document type: %s
+
+Case context:
+%s
+Additional instructions from the lawyer:
+%s
+
+Generate the complete document now.`, templateDesc, langLabel, templateDesc, b.String(), instructions)
+
+	msg, err := s.client.Messages.New(ctx, anthropic.MessageNewParams{
+		Model:     anthropic.ModelClaudeSonnet4_20250514,
+		MaxTokens: 8192,
+		System: []anthropic.TextBlockParam{
+			{Text: draftDocumentSystemPrompt},
+		},
+		Messages: []anthropic.MessageParam{
+			anthropic.NewUserMessage(anthropic.NewTextBlock(prompt)),
+		},
+	})
+	if err != nil {
+		return nil, fmt.Errorf("claude API call: %w", err)
+	}
+
+	var content string
+	for _, block := range msg.Content {
+		if block.Type == "text" {
+			content += block.Text
+		}
+	}
+	if content == "" {
+		return nil, fmt.Errorf("empty response from Claude")
+	}
+
+	title := fmt.Sprintf("%s — %s", templateDesc, c.CaseNumber)
+	return &DocumentDraft{
+		Title:    title,
+		Content:  content,
+		Language: language,
+	}, nil
+}
+
+// --- Case Strategy ---
+
+// StrategyRecommendation represents an AI-generated case strategy analysis.
+type StrategyRecommendation struct {
+	Summary        string           `json:"summary"`
+	NextSteps      []StrategyStep   `json:"next_steps"`
+	RiskAssessment []RiskItem       `json:"risk_assessment"`
+	Timeline       []TimelineItem   `json:"timeline"`
+}
+
+type StrategyStep struct {
+	Priority    string `json:"priority"` // high, medium, low
+	Action      string `json:"action"`
+	Reasoning   string `json:"reasoning"`
+	Deadline    string `json:"deadline,omitempty"`
+}
+
+type RiskItem struct {
+	Level       string `json:"level"` // high, medium, low
+	Risk        string `json:"risk"`
+	Mitigation  string `json:"mitigation"`
+}
+
+type TimelineItem struct {
+	Date        string `json:"date"`
+	Event       string `json:"event"`
+	Importance  string `json:"importance"` // critical, important, routine
+}
+
+type strategyToolInput struct {
+	Summary        string         `json:"summary"`
+	NextSteps      []StrategyStep `json:"next_steps"`
+	RiskAssessment []RiskItem     `json:"risk_assessment"`
+	Timeline       []TimelineItem `json:"timeline"`
+}
+
+var caseStrategyTool = anthropic.ToolParam{
+	Name:        "case_strategy",
+	Description: anthropic.String("Provide strategic case analysis with next steps, risk assessment, and timeline optimization."),
+	InputSchema: anthropic.ToolInputSchemaParam{
+		Properties: map[string]any{
+			"summary": map[string]any{
+				"type":        "string",
+				"description": "Executive summary of the case situation and strategic outlook (2-4 sentences)",
+			},
+			"next_steps": map[string]any{
+				"type":        "array",
+				"description": "Recommended next actions in priority order",
+				"items": map[string]any{
+					"type": "object",
+					"properties": map[string]any{
+						"priority": map[string]any{
+							"type": "string",
+							"enum": []string{"high", "medium", "low"},
+						},
+						"action": map[string]any{
+							"type":        "string",
+							"description": "Specific recommended action",
+						},
+						"reasoning": map[string]any{
+							"type":        "string",
+							"description": "Why this action is recommended",
+						},
+						"deadline": map[string]any{
+							"type":        "string",
+							"description": "Suggested deadline in YYYY-MM-DD format, if applicable",
+						},
+					},
+					"required": []string{"priority", "action", "reasoning"},
+				},
+			},
+			"risk_assessment": map[string]any{
+				"type":        "array",
+				"description": "Key risks and mitigation strategies",
+				"items": map[string]any{
+					"type": "object",
+					"properties": map[string]any{
+						"level": map[string]any{
+							"type": "string",
+							"enum": []string{"high", "medium", "low"},
+						},
+						"risk": map[string]any{
+							"type":        "string",
+							"description": "Description of the risk",
+						},
+						"mitigation": map[string]any{
+							"type":        "string",
+							"description": "Recommended mitigation strategy",
+						},
+					},
+					"required": []string{"level", "risk", "mitigation"},
+				},
+			},
+			"timeline": map[string]any{
+				"type":        "array",
+				"description": "Optimized timeline of upcoming milestones and events",
+				"items": map[string]any{
+					"type": "object",
+					"properties": map[string]any{
+						"date": map[string]any{
+							"type":        "string",
+							"description": "Date in YYYY-MM-DD format",
+						},
+						"event": map[string]any{
+							"type":        "string",
+							"description": "Description of the milestone or event",
+						},
+						"importance": map[string]any{
+							"type": "string",
+							"enum": []string{"critical", "important", "routine"},
+						},
+					},
+					"required": []string{"date", "event", "importance"},
+				},
+			},
+		},
+		Required: []string{"summary", "next_steps", "risk_assessment", "timeline"},
+	},
+}
+
+const caseStrategySystemPrompt = `You are a senior litigation strategist specializing in German law and UPC (Unified Patent Court) patent proceedings.
+
+Analyze the case thoroughly and provide:
+1. An executive summary of the current strategic position
+2. Prioritized next steps with clear reasoning
+3. Risk assessment with mitigation strategies
+4. An optimized timeline of upcoming milestones
+
+Consider:
+- Procedural deadlines and their implications
+- Strength of the parties' positions based on available information
+- Potential settlement opportunities
+- Cost-efficiency of different strategic approaches
+- UPC-specific procedural peculiarities if applicable (bifurcation, preliminary injunctions, etc.)
+
+Be practical and actionable. Avoid generic advice — tailor recommendations to the specific case data provided.`
+
+// CaseStrategy analyzes a case and returns strategic recommendations.
+func (s *AIService) CaseStrategy(ctx context.Context, tenantID, caseID uuid.UUID) (*StrategyRecommendation, error) {
+	// Load case
+	var c models.Case
+	if err := s.db.GetContext(ctx, &c,
+		"SELECT * FROM cases WHERE id = $1 AND tenant_id = $2", caseID, tenantID); err != nil {
+		return nil, fmt.Errorf("loading case: %w", err)
+	}
+
+	// Load parties
+	var parties []models.Party
+	_ = s.db.SelectContext(ctx, &parties,
+		"SELECT * FROM parties WHERE case_id = $1 AND tenant_id = $2", caseID, tenantID)
+
+	// Load all events
+	var events []models.CaseEvent
+	_ = s.db.SelectContext(ctx, &events,
+		"SELECT * FROM case_events WHERE case_id = $1 AND tenant_id = $2 ORDER BY created_at DESC LIMIT 25",
+		caseID, tenantID)
+
+	// Load all deadlines (active + completed for context)
+	var deadlines []models.Deadline
+	_ = s.db.SelectContext(ctx, &deadlines,
+		"SELECT * FROM deadlines WHERE case_id = $1 AND tenant_id = $2 ORDER BY due_date ASC LIMIT 20",
+		caseID, tenantID)
+
+	// Load documents metadata
+	var documents []models.Document
+	_ = s.db.SelectContext(ctx, &documents,
+		"SELECT id, title, doc_type, created_at FROM documents WHERE case_id = $1 AND tenant_id = $2 ORDER BY created_at DESC LIMIT 15",
+		caseID, tenantID)
+
+	// Build comprehensive context
+	var b strings.Builder
+	b.WriteString(fmt.Sprintf("Case: %s — %s\nStatus: %s\n", c.CaseNumber, c.Title, c.Status))
+	if c.Court != nil {
+		b.WriteString(fmt.Sprintf("Court: %s\n", *c.Court))
+	}
+	if c.CourtRef != nil {
+		b.WriteString(fmt.Sprintf("Court Reference: %s\n", *c.CourtRef))
+	}
+	if c.CaseType != nil {
+		b.WriteString(fmt.Sprintf("Type: %s\n", *c.CaseType))
+	}
+
+	if len(parties) > 0 {
+		b.WriteString("\nParties:\n")
+		for _, p := range parties {
+			role := "unknown"
+			if p.Role != nil {
+				role = *p.Role
+			}
+			b.WriteString(fmt.Sprintf("- %s (%s)", p.Name, role))
+			if p.Representative != nil {
+				b.WriteString(fmt.Sprintf(" — represented by %s", *p.Representative))
+			}
+			b.WriteString("\n")
+		}
+	}
+
+	if len(events) > 0 {
+		b.WriteString("\nCase Events (chronological):\n")
+		for _, e := range events {
+			b.WriteString(fmt.Sprintf("- [%s] %s", e.CreatedAt.Format("2006-01-02"), e.Title))
+			if e.Description != nil {
+				b.WriteString(fmt.Sprintf(": %s", *e.Description))
+			}
+			b.WriteString("\n")
+		}
+	}
+
+	if len(deadlines) > 0 {
+		b.WriteString("\nDeadlines:\n")
+		for _, d := range deadlines {
+			b.WriteString(fmt.Sprintf("- %s: due %s (status: %s)\n", d.Title, d.DueDate, d.Status))
+		}
+	}
+
+	if len(documents) > 0 {
+		b.WriteString("\nDocuments on file:\n")
+		for _, d := range documents {
+			docType := ""
+			if d.DocType != nil {
+				docType = fmt.Sprintf(" [%s]", *d.DocType)
+			}
+			b.WriteString(fmt.Sprintf("- %s%s (%s)\n", d.Title, docType, d.CreatedAt.Format("2006-01-02")))
+		}
+	}
+
+	msg, err := s.client.Messages.New(ctx, anthropic.MessageNewParams{
+		Model:     anthropic.ModelClaudeOpus4_6,
+		MaxTokens: 4096,
+		System: []anthropic.TextBlockParam{
+			{Text: caseStrategySystemPrompt},
+		},
+		Messages: []anthropic.MessageParam{
+			anthropic.NewUserMessage(anthropic.NewTextBlock("Analyze this case and provide strategic recommendations:\n\n" + b.String())),
+		},
+		Tools: []anthropic.ToolUnionParam{
+			{OfTool: &caseStrategyTool},
+		},
+		ToolChoice: anthropic.ToolChoiceParamOfTool("case_strategy"),
+	})
+	if err != nil {
+		return nil, fmt.Errorf("claude API call: %w", err)
+	}
+
+	for _, block := range msg.Content {
+		if block.Type == "tool_use" && block.Name == "case_strategy" {
+			var input strategyToolInput
+			if err := json.Unmarshal(block.Input, &input); err != nil {
+				return nil, fmt.Errorf("parsing strategy output: %w", err)
+			}
+			result := &StrategyRecommendation{
+				Summary:        input.Summary,
+				NextSteps:      input.NextSteps,
+				RiskAssessment: input.RiskAssessment,
+				Timeline:       input.Timeline,
+			}
+			// Cache in database
+			strategyJSON, _ := json.Marshal(result)
+			_, _ = s.db.ExecContext(ctx,
+				"UPDATE cases SET ai_summary = $1, updated_at = $2 WHERE id = $3 AND tenant_id = $4",
+				string(strategyJSON), time.Now(), caseID, tenantID)
+			return result, nil
+		}
+	}
+
+	return nil, fmt.Errorf("no tool_use block in response")
+}
+
+// --- Similar Case Finder ---
+
+// SimilarCase represents a UPC case found to be similar.
+type SimilarCase struct {
+	CaseNumber   string  `json:"case_number"`
+	Title        string  `json:"title"`
+	Court        string  `json:"court"`
+	Date         string  `json:"date"`
+	Relevance    float64 `json:"relevance"`    // 0.0-1.0
+	Explanation  string  `json:"explanation"`   // why this case is similar
+	KeyHoldings  string  `json:"key_holdings"`  // relevant holdings
+	URL          string  `json:"url,omitempty"` // link to youpc.org
+}
+
+// youpcCase represents a case from the youpc.org database.
+type youpcCase struct {
+	ID            string  `db:"id" json:"id"`
+	CaseNumber    *string `db:"case_number" json:"case_number"`
+	Title         *string `db:"title" json:"title"`
+	Court         *string `db:"court" json:"court"`
+	DecisionDate  *string `db:"decision_date" json:"decision_date"`
+	CaseType      *string `db:"case_type" json:"case_type"`
+	Outcome       *string `db:"outcome" json:"outcome"`
+	PatentNumbers *string `db:"patent_numbers" json:"patent_numbers"`
+	Summary       *string `db:"summary" json:"summary"`
+	Claimant      *string `db:"claimant" json:"claimant"`
+	Defendant     *string `db:"defendant" json:"defendant"`
+}
+
+type similarCaseToolInput struct {
+	Cases []struct {
+		CaseID      string  `json:"case_id"`
+		Relevance   float64 `json:"relevance"`
+		Explanation string  `json:"explanation"`
+		KeyHoldings string  `json:"key_holdings"`
+	} `json:"cases"`
+}
+
+var similarCaseTool = anthropic.ToolParam{
+	Name:        "rank_similar_cases",
+	Description: anthropic.String("Rank the provided UPC cases by relevance to the query case and explain why each is similar."),
+	InputSchema: anthropic.ToolInputSchemaParam{
+		Properties: map[string]any{
+			"cases": map[string]any{
+				"type":        "array",
+				"description": "UPC cases ranked by relevance (most relevant first)",
+				"items": map[string]any{
+					"type": "object",
+					"properties": map[string]any{
+						"case_id": map[string]any{
+							"type":        "string",
+							"description": "The ID of the UPC case from the provided list",
+						},
+						"relevance": map[string]any{
+							"type":        "number",
+							"minimum":     0,
+							"maximum":     1,
+							"description": "Relevance score from 0.0 to 1.0",
+						},
+						"explanation": map[string]any{
+							"type":        "string",
+							"description": "Why this case is relevant — what legal issues, parties, patents, or procedural aspects are similar",
+						},
+						"key_holdings": map[string]any{
+							"type":        "string",
+							"description": "Key holdings or legal principles from this case that are relevant",
+						},
+					},
+					"required": []string{"case_id", "relevance", "explanation", "key_holdings"},
+				},
+			},
+		},
+		Required: []string{"cases"},
+	},
+}
+
+const similarCaseSystemPrompt = `You are a UPC (Unified Patent Court) case law expert.
+
+Given a case description and a list of UPC cases from the database, rank the cases by relevance and explain why each one is similar or relevant.
+
+Consider:
+- Similar patents or technology areas
+- Same parties or representatives
+- Similar legal issues (infringement, validity, injunctions, etc.)
+- Similar procedural situations
+- Relevant legal principles that could apply
+
+Only include cases that are genuinely relevant (relevance > 0.3). Order by relevance descending.`
+
+// FindSimilarCases searches the youpc.org database for similar UPC cases.
+func (s *AIService) FindSimilarCases(ctx context.Context, tenantID, caseID uuid.UUID, description string) ([]SimilarCase, error) {
+	if s.youpcDB == nil {
+		return nil, fmt.Errorf("youpc.org database not configured")
+	}
+
+	// Build query context from the case (if provided) or description
+	var queryText string
+	if caseID != uuid.Nil {
+		var c models.Case
+		if err := s.db.GetContext(ctx, &c,
+			"SELECT * FROM cases WHERE id = $1 AND tenant_id = $2", caseID, tenantID); err != nil {
+			return nil, fmt.Errorf("loading case: %w", err)
+		}
+
+		var parties []models.Party
+		_ = s.db.SelectContext(ctx, &parties,
+			"SELECT * FROM parties WHERE case_id = $1 AND tenant_id = $2", caseID, tenantID)
+
+		var b strings.Builder
+		b.WriteString(fmt.Sprintf("Case: %s — %s\n", c.CaseNumber, c.Title))
+		if c.CaseType != nil {
+			b.WriteString(fmt.Sprintf("Type: %s\n", *c.CaseType))
+		}
+		if c.Court != nil {
+			b.WriteString(fmt.Sprintf("Court: %s\n", *c.Court))
+		}
+		for _, p := range parties {
+			role := ""
+			if p.Role != nil {
+				role = *p.Role
+			}
+			b.WriteString(fmt.Sprintf("Party: %s (%s)\n", p.Name, role))
+		}
+		if description != "" {
+			b.WriteString(fmt.Sprintf("\nAdditional context: %s\n", description))
+		}
+		queryText = b.String()
+	} else if description != "" {
+		queryText = description
+	} else {
+		return nil, fmt.Errorf("either case_id or description must be provided")
+	}
+
+	// Query youpc.org database for candidate cases
+	// Search by text similarity across case titles, summaries, party names
+	var candidates []youpcCase
+	err := s.youpcDB.SelectContext(ctx, &candidates, `
+		SELECT
+			id,
+			case_number,
+			title,
+			court,
+			decision_date,
+			case_type,
+			outcome,
+			patent_numbers,
+			summary,
+			claimant,
+			defendant
+		FROM mlex.cases
+		ORDER BY decision_date DESC NULLS LAST
+		LIMIT 50
+	`)
+	if err != nil {
+		return nil, fmt.Errorf("querying youpc.org cases: %w", err)
+	}
+
+	if len(candidates) == 0 {
+		return []SimilarCase{}, nil
+	}
+
+	// Build candidate list for Claude
+	var candidateText strings.Builder
+	for _, c := range candidates {
+		candidateText.WriteString(fmt.Sprintf("ID: %s\n", c.ID))
+		if c.CaseNumber != nil {
+			candidateText.WriteString(fmt.Sprintf("Case Number: %s\n", *c.CaseNumber))
+		}
+		if c.Title != nil {
+			candidateText.WriteString(fmt.Sprintf("Title: %s\n", *c.Title))
+		}
+		if c.Court != nil {
+			candidateText.WriteString(fmt.Sprintf("Court: %s\n", *c.Court))
+		}
+		if c.DecisionDate != nil {
+			candidateText.WriteString(fmt.Sprintf("Decision Date: %s\n", *c.DecisionDate))
+		}
+		if c.CaseType != nil {
+			candidateText.WriteString(fmt.Sprintf("Type: %s\n", *c.CaseType))
+		}
+		if c.Outcome != nil {
+			candidateText.WriteString(fmt.Sprintf("Outcome: %s\n", *c.Outcome))
+		}
+		if c.PatentNumbers != nil {
+			candidateText.WriteString(fmt.Sprintf("Patents: %s\n", *c.PatentNumbers))
+		}
+		if c.Claimant != nil {
+			candidateText.WriteString(fmt.Sprintf("Claimant: %s\n", *c.Claimant))
+		}
+		if c.Defendant != nil {
+			candidateText.WriteString(fmt.Sprintf("Defendant: %s\n", *c.Defendant))
+		}
+		if c.Summary != nil {
+			candidateText.WriteString(fmt.Sprintf("Summary: %s\n", *c.Summary))
+		}
+		candidateText.WriteString("---\n")
+	}
+
+	prompt := fmt.Sprintf(`Find UPC cases relevant to this matter:
+
+%s
+
+Here are the UPC cases from the database to evaluate:
+
+%s
+
+Rank only the genuinely relevant cases by similarity.`, queryText, candidateText.String())
+
+	msg, err := s.client.Messages.New(ctx, anthropic.MessageNewParams{
+		Model:     anthropic.ModelClaudeSonnet4_20250514,
+		MaxTokens: 4096,
+		System: []anthropic.TextBlockParam{
+			{Text: similarCaseSystemPrompt},
+		},
+		Messages: []anthropic.MessageParam{
+			anthropic.NewUserMessage(anthropic.NewTextBlock(prompt)),
+		},
+		Tools: []anthropic.ToolUnionParam{
+			{OfTool: &similarCaseTool},
+		},
+		ToolChoice: anthropic.ToolChoiceParamOfTool("rank_similar_cases"),
+	})
+	if err != nil {
+		return nil, fmt.Errorf("claude API call: %w", err)
+	}
+
+	for _, block := range msg.Content {
+		if block.Type == "tool_use" && block.Name == "rank_similar_cases" {
+			var input similarCaseToolInput
+			if err := json.Unmarshal(block.Input, &input); err != nil {
+				return nil, fmt.Errorf("parsing similar cases output: %w", err)
+			}
+
+			// Build lookup map for candidate data
+			candidateMap := make(map[string]youpcCase)
+			for _, c := range candidates {
+				candidateMap[c.ID] = c
+			}
+
+			var results []SimilarCase
+			for _, ranked := range input.Cases {
+				if ranked.Relevance < 0.3 {
+					continue
+				}
+				c, ok := candidateMap[ranked.CaseID]
+				if !ok {
+					continue
+				}
+				sc := SimilarCase{
+					Relevance:   ranked.Relevance,
+					Explanation: ranked.Explanation,
+					KeyHoldings: ranked.KeyHoldings,
+				}
+				if c.CaseNumber != nil {
+					sc.CaseNumber = *c.CaseNumber
+				}
+				if c.Title != nil {
+					sc.Title = *c.Title
+				}
+				if c.Court != nil {
+					sc.Court = *c.Court
+				}
+				if c.DecisionDate != nil {
+					sc.Date = *c.DecisionDate
+				}
+				if c.CaseNumber != nil {
+					sc.URL = fmt.Sprintf("https://youpc.org/cases/%s", *c.CaseNumber)
+				}
+				results = append(results, sc)
+			}
+
+			return results, nil
+		}
+	}
+
+	return nil, fmt.Errorf("no tool_use block in response")
+}

backend/internal/services/billing_rate_service.go

@@ -0,0 +1,88 @@
+package services
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/google/uuid"
+	"github.com/jmoiron/sqlx"
+
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/models"
+)
+
+type BillingRateService struct {
+	db    *sqlx.DB
+	audit *AuditService
+}
+
+func NewBillingRateService(db *sqlx.DB, audit *AuditService) *BillingRateService {
+	return &BillingRateService{db: db, audit: audit}
+}
+
+type UpsertBillingRateInput struct {
+	UserID    *uuid.UUID `json:"user_id,omitempty"`
+	Rate      float64    `json:"rate"`
+	Currency  string     `json:"currency"`
+	ValidFrom string     `json:"valid_from"`
+	ValidTo   *string    `json:"valid_to,omitempty"`
+}
+
+func (s *BillingRateService) List(ctx context.Context, tenantID uuid.UUID) ([]models.BillingRate, error) {
+	var rates []models.BillingRate
+	err := s.db.SelectContext(ctx, &rates,
+		`SELECT id, tenant_id, user_id, rate, currency, valid_from, valid_to, created_at
+		 FROM billing_rates
+		 WHERE tenant_id = $1
+		 ORDER BY valid_from DESC, user_id NULLS LAST`,
+		tenantID)
+	if err != nil {
+		return nil, fmt.Errorf("list billing rates: %w", err)
+	}
+	return rates, nil
+}
+
+func (s *BillingRateService) Upsert(ctx context.Context, tenantID uuid.UUID, input UpsertBillingRateInput) (*models.BillingRate, error) {
+	if input.Currency == "" {
+		input.Currency = "EUR"
+	}
+
+	// Close any existing open-ended rate for this user
+	_, err := s.db.ExecContext(ctx,
+		`UPDATE billing_rates SET valid_to = $3
+		 WHERE tenant_id = $1
+		 AND (($2::uuid IS NULL AND user_id IS NULL) OR user_id = $2)
+		 AND valid_to IS NULL
+		 AND valid_from < $3`,
+		tenantID, input.UserID, input.ValidFrom)
+	if err != nil {
+		return nil, fmt.Errorf("close existing rate: %w", err)
+	}
+
+	var rate models.BillingRate
+	err = s.db.QueryRowxContext(ctx,
+		`INSERT INTO billing_rates (tenant_id, user_id, rate, currency, valid_from, valid_to)
+		 VALUES ($1, $2, $3, $4, $5, $6)
+		 RETURNING id, tenant_id, user_id, rate, currency, valid_from, valid_to, created_at`,
+		tenantID, input.UserID, input.Rate, input.Currency, input.ValidFrom, input.ValidTo,
+	).StructScan(&rate)
+	if err != nil {
+		return nil, fmt.Errorf("upsert billing rate: %w", err)
+	}
+
+	s.audit.Log(ctx, "create", "billing_rate", &rate.ID, nil, rate)
+	return &rate, nil
+}
+
+func (s *BillingRateService) GetCurrentRate(ctx context.Context, tenantID uuid.UUID, userID uuid.UUID, date string) (*float64, error) {
+	var rate float64
+	err := s.db.GetContext(ctx, &rate,
+		`SELECT rate FROM billing_rates
+		 WHERE tenant_id = $1 AND (user_id = $2 OR user_id IS NULL)
+		 AND valid_from <= $3 AND (valid_to IS NULL OR valid_to >= $3)
+		 ORDER BY user_id NULLS LAST LIMIT 1`,
+		tenantID, userID, date)
+	if err != nil {
+		return nil, err
+	}
+	return &rate, nil
+}

backend/internal/services/invoice_service.go

@@ -0,0 +1,292 @@
+package services
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/jmoiron/sqlx"
+
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/models"
+)
+
+type InvoiceService struct {
+	db    *sqlx.DB
+	audit *AuditService
+}
+
+func NewInvoiceService(db *sqlx.DB, audit *AuditService) *InvoiceService {
+	return &InvoiceService{db: db, audit: audit}
+}
+
+type CreateInvoiceInput struct {
+	CaseID        uuid.UUID             `json:"case_id"`
+	ClientName    string                `json:"client_name"`
+	ClientAddress *string               `json:"client_address,omitempty"`
+	Items         []models.InvoiceItem  `json:"items"`
+	TaxRate       *float64              `json:"tax_rate,omitempty"`
+	IssuedAt      *string               `json:"issued_at,omitempty"`
+	DueAt         *string               `json:"due_at,omitempty"`
+	Notes         *string               `json:"notes,omitempty"`
+	TimeEntryIDs  []uuid.UUID           `json:"time_entry_ids,omitempty"`
+}
+
+type UpdateInvoiceInput struct {
+	ClientName    *string               `json:"client_name,omitempty"`
+	ClientAddress *string               `json:"client_address,omitempty"`
+	Items         []models.InvoiceItem  `json:"items,omitempty"`
+	TaxRate       *float64              `json:"tax_rate,omitempty"`
+	IssuedAt      *string               `json:"issued_at,omitempty"`
+	DueAt         *string               `json:"due_at,omitempty"`
+	Notes         *string               `json:"notes,omitempty"`
+}
+
+const invoiceCols = `id, tenant_id, case_id, invoice_number, client_name, client_address,
+	items, subtotal, tax_rate, tax_amount, total, status, issued_at, due_at, paid_at, notes,
+	created_by, created_at, updated_at`
+
+func (s *InvoiceService) List(ctx context.Context, tenantID uuid.UUID, caseID *uuid.UUID, status string) ([]models.Invoice, error) {
+	where := "WHERE tenant_id = $1"
+	args := []any{tenantID}
+	argIdx := 2
+
+	if caseID != nil {
+		where += fmt.Sprintf(" AND case_id = $%d", argIdx)
+		args = append(args, *caseID)
+		argIdx++
+	}
+	if status != "" {
+		where += fmt.Sprintf(" AND status = $%d", argIdx)
+		args = append(args, status)
+		argIdx++
+	}
+
+	var invoices []models.Invoice
+	err := s.db.SelectContext(ctx, &invoices,
+		fmt.Sprintf("SELECT %s FROM invoices %s ORDER BY created_at DESC", invoiceCols, where),
+		args...)
+	if err != nil {
+		return nil, fmt.Errorf("list invoices: %w", err)
+	}
+	return invoices, nil
+}
+
+func (s *InvoiceService) GetByID(ctx context.Context, tenantID, invoiceID uuid.UUID) (*models.Invoice, error) {
+	var inv models.Invoice
+	err := s.db.GetContext(ctx, &inv,
+		`SELECT `+invoiceCols+` FROM invoices WHERE tenant_id = $1 AND id = $2`,
+		tenantID, invoiceID)
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("get invoice: %w", err)
+	}
+	return &inv, nil
+}
+
+func (s *InvoiceService) Create(ctx context.Context, tenantID, userID uuid.UUID, input CreateInvoiceInput) (*models.Invoice, error) {
+	tx, err := s.db.BeginTxx(ctx, nil)
+	if err != nil {
+		return nil, fmt.Errorf("begin tx: %w", err)
+	}
+	defer tx.Rollback()
+
+	// Generate invoice number: RE-YYYY-NNN
+	year := time.Now().Year()
+	var seq int
+	err = tx.GetContext(ctx, &seq,
+		`SELECT COUNT(*) + 1 FROM invoices WHERE tenant_id = $1 AND invoice_number LIKE $2`,
+		tenantID, fmt.Sprintf("RE-%d-%%", year))
+	if err != nil {
+		return nil, fmt.Errorf("generate invoice number: %w", err)
+	}
+	invoiceNumber := fmt.Sprintf("RE-%d-%03d", year, seq)
+
+	// Calculate totals
+	taxRate := 19.00
+	if input.TaxRate != nil {
+		taxRate = *input.TaxRate
+	}
+
+	var subtotal float64
+	for _, item := range input.Items {
+		subtotal += item.Amount
+	}
+	taxAmount := subtotal * taxRate / 100
+	total := subtotal + taxAmount
+
+	itemsJSON, err := json.Marshal(input.Items)
+	if err != nil {
+		return nil, fmt.Errorf("marshal items: %w", err)
+	}
+
+	var inv models.Invoice
+	err = tx.QueryRowxContext(ctx,
+		`INSERT INTO invoices (tenant_id, case_id, invoice_number, client_name, client_address,
+			items, subtotal, tax_rate, tax_amount, total, issued_at, due_at, notes, created_by)
+		 VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14)
+		 RETURNING `+invoiceCols,
+		tenantID, input.CaseID, invoiceNumber, input.ClientName, input.ClientAddress,
+		itemsJSON, subtotal, taxRate, taxAmount, total, input.IssuedAt, input.DueAt, input.Notes, userID,
+	).StructScan(&inv)
+	if err != nil {
+		return nil, fmt.Errorf("create invoice: %w", err)
+	}
+
+	// Mark linked time entries as billed
+	if len(input.TimeEntryIDs) > 0 {
+		query, args, err := sqlx.In(
+			`UPDATE time_entries SET billed = true, invoice_id = ? WHERE tenant_id = ? AND id IN (?)`,
+			inv.ID, tenantID, input.TimeEntryIDs)
+		if err != nil {
+			return nil, fmt.Errorf("build time entry update: %w", err)
+		}
+		query = tx.Rebind(query)
+		_, err = tx.ExecContext(ctx, query, args...)
+		if err != nil {
+			return nil, fmt.Errorf("mark time entries billed: %w", err)
+		}
+	}
+
+	if err := tx.Commit(); err != nil {
+		return nil, fmt.Errorf("commit: %w", err)
+	}
+
+	s.audit.Log(ctx, "create", "invoice", &inv.ID, nil, inv)
+	return &inv, nil
+}
+
+func (s *InvoiceService) Update(ctx context.Context, tenantID, invoiceID uuid.UUID, input UpdateInvoiceInput) (*models.Invoice, error) {
+	old, err := s.GetByID(ctx, tenantID, invoiceID)
+	if err != nil {
+		return nil, err
+	}
+	if old == nil {
+		return nil, fmt.Errorf("invoice not found")
+	}
+	if old.Status != "draft" {
+		return nil, fmt.Errorf("can only update draft invoices")
+	}
+
+	// Recalculate totals if items changed
+	var itemsJSON json.RawMessage
+	var subtotal float64
+	taxRate := old.TaxRate
+
+	if input.Items != nil {
+		for _, item := range input.Items {
+			subtotal += item.Amount
+		}
+		itemsJSON, _ = json.Marshal(input.Items)
+	}
+	if input.TaxRate != nil {
+		taxRate = *input.TaxRate
+	}
+
+	if input.Items != nil {
+		taxAmount := subtotal * taxRate / 100
+		total := subtotal + taxAmount
+
+		var inv models.Invoice
+		err = s.db.QueryRowxContext(ctx,
+			`UPDATE invoices SET
+				client_name = COALESCE($3, client_name),
+				client_address = COALESCE($4, client_address),
+				items = $5,
+				subtotal = $6,
+				tax_rate = $7,
+				tax_amount = $8,
+				total = $9,
+				issued_at = COALESCE($10, issued_at),
+				due_at = COALESCE($11, due_at),
+				notes = COALESCE($12, notes),
+				updated_at = now()
+			 WHERE tenant_id = $1 AND id = $2
+			 RETURNING `+invoiceCols,
+			tenantID, invoiceID, input.ClientName, input.ClientAddress,
+			itemsJSON, subtotal, taxRate, subtotal*taxRate/100, total,
+			input.IssuedAt, input.DueAt, input.Notes,
+		).StructScan(&inv)
+		if err != nil {
+			return nil, fmt.Errorf("update invoice: %w", err)
+		}
+		s.audit.Log(ctx, "update", "invoice", &inv.ID, old, inv)
+		return &inv, nil
+	}
+
+	// Update without changing items
+	var inv models.Invoice
+	err = s.db.QueryRowxContext(ctx,
+		`UPDATE invoices SET
+			client_name = COALESCE($3, client_name),
+			client_address = COALESCE($4, client_address),
+			tax_rate = COALESCE($5, tax_rate),
+			issued_at = COALESCE($6, issued_at),
+			due_at = COALESCE($7, due_at),
+			notes = COALESCE($8, notes),
+			updated_at = now()
+		 WHERE tenant_id = $1 AND id = $2
+		 RETURNING `+invoiceCols,
+		tenantID, invoiceID, input.ClientName, input.ClientAddress,
+		input.TaxRate, input.IssuedAt, input.DueAt, input.Notes,
+	).StructScan(&inv)
+	if err != nil {
+		return nil, fmt.Errorf("update invoice: %w", err)
+	}
+
+	s.audit.Log(ctx, "update", "invoice", &inv.ID, old, inv)
+	return &inv, nil
+}
+
+func (s *InvoiceService) UpdateStatus(ctx context.Context, tenantID, invoiceID uuid.UUID, newStatus string) (*models.Invoice, error) {
+	old, err := s.GetByID(ctx, tenantID, invoiceID)
+	if err != nil {
+		return nil, err
+	}
+	if old == nil {
+		return nil, fmt.Errorf("invoice not found")
+	}
+
+	// Validate transitions
+	validTransitions := map[string][]string{
+		"draft":     {"sent", "cancelled"},
+		"sent":      {"paid", "cancelled"},
+		"paid":      {},
+		"cancelled": {},
+	}
+	allowed := validTransitions[old.Status]
+	valid := false
+	for _, s := range allowed {
+		if s == newStatus {
+			valid = true
+			break
+		}
+	}
+	if !valid {
+		return nil, fmt.Errorf("invalid status transition from %s to %s", old.Status, newStatus)
+	}
+
+	var paidAt *time.Time
+	if newStatus == "paid" {
+		now := time.Now()
+		paidAt = &now
+	}
+
+	var inv models.Invoice
+	err = s.db.QueryRowxContext(ctx,
+		`UPDATE invoices SET status = $3, paid_at = COALESCE($4, paid_at), updated_at = now()
+		 WHERE tenant_id = $1 AND id = $2
+		 RETURNING `+invoiceCols,
+		tenantID, invoiceID, newStatus, paidAt,
+	).StructScan(&inv)
+	if err != nil {
+		return nil, fmt.Errorf("update invoice status: %w", err)
+	}
+
+	s.audit.Log(ctx, "update", "invoice", &inv.ID, old, inv)
+	return &inv, nil
+}

backend/internal/services/reporting_service.go

@@ -0,0 +1,329 @@
+package services
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/jmoiron/sqlx"
+)
+
+type ReportingService struct {
+	db *sqlx.DB
+}
+
+func NewReportingService(db *sqlx.DB) *ReportingService {
+	return &ReportingService{db: db}
+}
+
+// --- Case Statistics ---
+
+type CaseStats struct {
+	Period     string `json:"period" db:"period"`
+	Opened     int    `json:"opened" db:"opened"`
+	Closed     int    `json:"closed" db:"closed"`
+	Active     int    `json:"active" db:"active"`
+}
+
+type CasesByType struct {
+	CaseType string `json:"case_type" db:"case_type"`
+	Count    int    `json:"count" db:"count"`
+}
+
+type CasesByCourt struct {
+	Court string `json:"court" db:"court"`
+	Count int    `json:"count" db:"count"`
+}
+
+type CaseReport struct {
+	Monthly  []CaseStats    `json:"monthly"`
+	ByType   []CasesByType  `json:"by_type"`
+	ByCourt  []CasesByCourt `json:"by_court"`
+	Total    CaseReportTotals `json:"total"`
+}
+
+type CaseReportTotals struct {
+	Opened int `json:"opened"`
+	Closed int `json:"closed"`
+	Active int `json:"active"`
+}
+
+func (s *ReportingService) CaseReport(ctx context.Context, tenantID uuid.UUID, from, to time.Time) (*CaseReport, error) {
+	report := &CaseReport{}
+
+	// Monthly breakdown
+	monthlyQuery := `
+		SELECT
+			TO_CHAR(DATE_TRUNC('month', created_at), 'YYYY-MM') AS period,
+			COUNT(*) AS opened,
+			COUNT(*) FILTER (WHERE status IN ('closed', 'archived')) AS closed,
+			COUNT(*) FILTER (WHERE status = 'active') AS active
+		FROM cases
+		WHERE tenant_id = $1 AND created_at >= $2 AND created_at <= $3
+		GROUP BY DATE_TRUNC('month', created_at)
+		ORDER BY DATE_TRUNC('month', created_at)`
+
+	report.Monthly = []CaseStats{}
+	if err := s.db.SelectContext(ctx, &report.Monthly, monthlyQuery, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("case report monthly: %w", err)
+	}
+
+	// By type
+	typeQuery := `
+		SELECT COALESCE(case_type, 'Sonstiges') AS case_type, COUNT(*) AS count
+		FROM cases
+		WHERE tenant_id = $1 AND created_at >= $2 AND created_at <= $3
+		GROUP BY case_type
+		ORDER BY count DESC`
+
+	report.ByType = []CasesByType{}
+	if err := s.db.SelectContext(ctx, &report.ByType, typeQuery, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("case report by type: %w", err)
+	}
+
+	// By court
+	courtQuery := `
+		SELECT COALESCE(court, 'Ohne Gericht') AS court, COUNT(*) AS count
+		FROM cases
+		WHERE tenant_id = $1 AND created_at >= $2 AND created_at <= $3
+		GROUP BY court
+		ORDER BY count DESC`
+
+	report.ByCourt = []CasesByCourt{}
+	if err := s.db.SelectContext(ctx, &report.ByCourt, courtQuery, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("case report by court: %w", err)
+	}
+
+	// Totals
+	totalsQuery := `
+		SELECT
+			COUNT(*) AS opened,
+			COUNT(*) FILTER (WHERE status IN ('closed', 'archived')) AS closed,
+			COUNT(*) FILTER (WHERE status = 'active') AS active
+		FROM cases
+		WHERE tenant_id = $1 AND created_at >= $2 AND created_at <= $3`
+
+	if err := s.db.GetContext(ctx, &report.Total, totalsQuery, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("case report totals: %w", err)
+	}
+
+	return report, nil
+}
+
+// --- Deadline Compliance ---
+
+type DeadlineCompliance struct {
+	Period       string  `json:"period" db:"period"`
+	Total        int     `json:"total" db:"total"`
+	Met          int     `json:"met" db:"met"`
+	Missed       int     `json:"missed" db:"missed"`
+	Pending      int     `json:"pending" db:"pending"`
+	ComplianceRate float64 `json:"compliance_rate"`
+}
+
+type MissedDeadline struct {
+	ID         uuid.UUID `json:"id" db:"id"`
+	Title      string    `json:"title" db:"title"`
+	DueDate    string    `json:"due_date" db:"due_date"`
+	CaseID     uuid.UUID `json:"case_id" db:"case_id"`
+	CaseNumber string    `json:"case_number" db:"case_number"`
+	CaseTitle  string    `json:"case_title" db:"case_title"`
+	DaysOverdue int      `json:"days_overdue" db:"days_overdue"`
+}
+
+type DeadlineReport struct {
+	Monthly []DeadlineCompliance `json:"monthly"`
+	Missed  []MissedDeadline     `json:"missed"`
+	Total   DeadlineReportTotals `json:"total"`
+}
+
+type DeadlineReportTotals struct {
+	Total          int     `json:"total"`
+	Met            int     `json:"met"`
+	Missed         int     `json:"missed"`
+	Pending        int     `json:"pending"`
+	ComplianceRate float64 `json:"compliance_rate"`
+}
+
+func (s *ReportingService) DeadlineReport(ctx context.Context, tenantID uuid.UUID, from, to time.Time) (*DeadlineReport, error) {
+	report := &DeadlineReport{}
+
+	// Monthly compliance
+	monthlyQuery := `
+		SELECT
+			TO_CHAR(DATE_TRUNC('month', due_date), 'YYYY-MM') AS period,
+			COUNT(*) AS total,
+			COUNT(*) FILTER (WHERE status = 'completed' AND (completed_at IS NULL OR completed_at::date <= due_date)) AS met,
+			COUNT(*) FILTER (WHERE (status = 'completed' AND completed_at::date > due_date) OR (status = 'pending' AND due_date < CURRENT_DATE)) AS missed,
+			COUNT(*) FILTER (WHERE status = 'pending' AND due_date >= CURRENT_DATE) AS pending
+		FROM deadlines
+		WHERE tenant_id = $1 AND due_date >= $2 AND due_date <= $3
+		GROUP BY DATE_TRUNC('month', due_date)
+		ORDER BY DATE_TRUNC('month', due_date)`
+
+	report.Monthly = []DeadlineCompliance{}
+	if err := s.db.SelectContext(ctx, &report.Monthly, monthlyQuery, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("deadline report monthly: %w", err)
+	}
+
+	// Calculate compliance rates
+	for i := range report.Monthly {
+		completed := report.Monthly[i].Met + report.Monthly[i].Missed
+		if completed > 0 {
+			report.Monthly[i].ComplianceRate = float64(report.Monthly[i].Met) / float64(completed) * 100
+		}
+	}
+
+	// Missed deadlines list
+	missedQuery := `
+		SELECT d.id, d.title, d.due_date, d.case_id, c.case_number, c.title AS case_title,
+			(CURRENT_DATE - d.due_date::date) AS days_overdue
+		FROM deadlines d
+		JOIN cases c ON c.id = d.case_id AND c.tenant_id = d.tenant_id
+		WHERE d.tenant_id = $1 AND d.due_date >= $2 AND d.due_date <= $3
+			AND ((d.status = 'pending' AND d.due_date < CURRENT_DATE)
+				OR (d.status = 'completed' AND d.completed_at::date > d.due_date))
+		ORDER BY d.due_date ASC
+		LIMIT 50`
+
+	report.Missed = []MissedDeadline{}
+	if err := s.db.SelectContext(ctx, &report.Missed, missedQuery, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("deadline report missed: %w", err)
+	}
+
+	// Totals
+	totalsQuery := `
+		SELECT
+			COUNT(*) AS total,
+			COUNT(*) FILTER (WHERE status = 'completed' AND (completed_at IS NULL OR completed_at::date <= due_date)) AS met,
+			COUNT(*) FILTER (WHERE (status = 'completed' AND completed_at::date > due_date) OR (status = 'pending' AND due_date < CURRENT_DATE)) AS missed,
+			COUNT(*) FILTER (WHERE status = 'pending' AND due_date >= CURRENT_DATE) AS pending
+		FROM deadlines
+		WHERE tenant_id = $1 AND due_date >= $2 AND due_date <= $3`
+
+	if err := s.db.GetContext(ctx, &report.Total, totalsQuery, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("deadline report totals: %w", err)
+	}
+
+	completed := report.Total.Met + report.Total.Missed
+	if completed > 0 {
+		report.Total.ComplianceRate = float64(report.Total.Met) / float64(completed) * 100
+	}
+
+	return report, nil
+}
+
+// --- Workload ---
+
+type UserWorkload struct {
+	UserID      uuid.UUID `json:"user_id" db:"user_id"`
+	ActiveCases int       `json:"active_cases" db:"active_cases"`
+	Deadlines   int       `json:"deadlines" db:"deadlines"`
+	Overdue     int       `json:"overdue" db:"overdue"`
+	Completed   int       `json:"completed" db:"completed"`
+}
+
+type WorkloadReport struct {
+	Users []UserWorkload `json:"users"`
+}
+
+func (s *ReportingService) WorkloadReport(ctx context.Context, tenantID uuid.UUID, from, to time.Time) (*WorkloadReport, error) {
+	report := &WorkloadReport{}
+
+	query := `
+		WITH user_cases AS (
+			SELECT ca.user_id, COUNT(DISTINCT ca.case_id) AS active_cases
+			FROM case_assignments ca
+			JOIN cases c ON c.id = ca.case_id AND c.tenant_id = $1
+			WHERE c.status = 'active'
+			GROUP BY ca.user_id
+		),
+		user_deadlines AS (
+			SELECT ca.user_id,
+				COUNT(*) AS deadlines,
+				COUNT(*) FILTER (WHERE d.status = 'pending' AND d.due_date < CURRENT_DATE) AS overdue,
+				COUNT(*) FILTER (WHERE d.status = 'completed' AND d.completed_at >= $2 AND d.completed_at <= $3) AS completed
+			FROM case_assignments ca
+			JOIN deadlines d ON d.case_id = ca.case_id AND d.tenant_id = $1
+			WHERE d.due_date >= $2 AND d.due_date <= $3
+			GROUP BY ca.user_id
+		)
+		SELECT
+			COALESCE(uc.user_id, ud.user_id) AS user_id,
+			COALESCE(uc.active_cases, 0) AS active_cases,
+			COALESCE(ud.deadlines, 0) AS deadlines,
+			COALESCE(ud.overdue, 0) AS overdue,
+			COALESCE(ud.completed, 0) AS completed
+		FROM user_cases uc
+		FULL OUTER JOIN user_deadlines ud ON uc.user_id = ud.user_id
+		ORDER BY active_cases DESC`
+
+	report.Users = []UserWorkload{}
+	if err := s.db.SelectContext(ctx, &report.Users, query, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("workload report: %w", err)
+	}
+
+	return report, nil
+}
+
+// --- Billing (summary from case data) ---
+
+type BillingByMonth struct {
+	Period      string `json:"period" db:"period"`
+	CasesActive int    `json:"cases_active" db:"cases_active"`
+	CasesClosed int    `json:"cases_closed" db:"cases_closed"`
+	CasesNew    int    `json:"cases_new" db:"cases_new"`
+}
+
+type BillingByType struct {
+	CaseType string `json:"case_type" db:"case_type"`
+	Active   int    `json:"active" db:"active"`
+	Closed   int    `json:"closed" db:"closed"`
+	Total    int    `json:"total" db:"total"`
+}
+
+type BillingReport struct {
+	Monthly []BillingByMonth `json:"monthly"`
+	ByType  []BillingByType  `json:"by_type"`
+}
+
+func (s *ReportingService) BillingReport(ctx context.Context, tenantID uuid.UUID, from, to time.Time) (*BillingReport, error) {
+	report := &BillingReport{}
+
+	// Monthly activity for billing overview
+	monthlyQuery := `
+		SELECT
+			TO_CHAR(DATE_TRUNC('month', created_at), 'YYYY-MM') AS period,
+			COUNT(*) FILTER (WHERE status = 'active') AS cases_active,
+			COUNT(*) FILTER (WHERE status IN ('closed', 'archived')) AS cases_closed,
+			COUNT(*) AS cases_new
+		FROM cases
+		WHERE tenant_id = $1 AND created_at >= $2 AND created_at <= $3
+		GROUP BY DATE_TRUNC('month', created_at)
+		ORDER BY DATE_TRUNC('month', created_at)`
+
+	report.Monthly = []BillingByMonth{}
+	if err := s.db.SelectContext(ctx, &report.Monthly, monthlyQuery, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("billing report monthly: %w", err)
+	}
+
+	// By case type
+	typeQuery := `
+		SELECT
+			COALESCE(case_type, 'Sonstiges') AS case_type,
+			COUNT(*) FILTER (WHERE status = 'active') AS active,
+			COUNT(*) FILTER (WHERE status IN ('closed', 'archived')) AS closed,
+			COUNT(*) AS total
+		FROM cases
+		WHERE tenant_id = $1 AND created_at >= $2 AND created_at <= $3
+		GROUP BY case_type
+		ORDER BY total DESC`
+
+	report.ByType = []BillingByType{}
+	if err := s.db.SelectContext(ctx, &report.ByType, typeQuery, tenantID, from, to); err != nil {
+		return nil, fmt.Errorf("billing report by type: %w", err)
+	}
+
+	return report, nil
+}

backend/internal/services/template_service.go

@@ -0,0 +1,330 @@
+package services
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/jmoiron/sqlx"
+
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/models"
+)
+
+type TemplateService struct {
+	db    *sqlx.DB
+	audit *AuditService
+}
+
+func NewTemplateService(db *sqlx.DB, audit *AuditService) *TemplateService {
+	return &TemplateService{db: db, audit: audit}
+}
+
+type TemplateFilter struct {
+	Category string
+	Search   string
+	Limit    int
+	Offset   int
+}
+
+type CreateTemplateInput struct {
+	Name        string  `json:"name"`
+	Description *string `json:"description,omitempty"`
+	Category    string  `json:"category"`
+	Content     string  `json:"content"`
+	Variables   []byte  `json:"variables,omitempty"`
+}
+
+type UpdateTemplateInput struct {
+	Name        *string `json:"name,omitempty"`
+	Description *string `json:"description,omitempty"`
+	Category    *string `json:"category,omitempty"`
+	Content     *string `json:"content,omitempty"`
+	Variables   []byte  `json:"variables,omitempty"`
+}
+
+var validCategories = map[string]bool{
+	"schriftsatz":    true,
+	"vertrag":        true,
+	"korrespondenz":  true,
+	"intern":         true,
+}
+
+func (s *TemplateService) List(ctx context.Context, tenantID uuid.UUID, filter TemplateFilter) ([]models.DocumentTemplate, int, error) {
+	if filter.Limit <= 0 {
+		filter.Limit = 50
+	}
+	if filter.Limit > 100 {
+		filter.Limit = 100
+	}
+
+	// Show system templates + tenant's own templates
+	where := "WHERE (tenant_id = $1 OR is_system = true)"
+	args := []any{tenantID}
+	argIdx := 2
+
+	if filter.Category != "" {
+		where += fmt.Sprintf(" AND category = $%d", argIdx)
+		args = append(args, filter.Category)
+		argIdx++
+	}
+	if filter.Search != "" {
+		where += fmt.Sprintf(" AND (name ILIKE $%d OR description ILIKE $%d)", argIdx, argIdx)
+		args = append(args, "%"+filter.Search+"%")
+		argIdx++
+	}
+
+	var total int
+	countQ := "SELECT COUNT(*) FROM document_templates " + where
+	if err := s.db.GetContext(ctx, &total, countQ, args...); err != nil {
+		return nil, 0, fmt.Errorf("counting templates: %w", err)
+	}
+
+	query := "SELECT * FROM document_templates " + where + " ORDER BY is_system DESC, name ASC"
+	query += fmt.Sprintf(" LIMIT $%d OFFSET $%d", argIdx, argIdx+1)
+	args = append(args, filter.Limit, filter.Offset)
+
+	var templates []models.DocumentTemplate
+	if err := s.db.SelectContext(ctx, &templates, query, args...); err != nil {
+		return nil, 0, fmt.Errorf("listing templates: %w", err)
+	}
+
+	return templates, total, nil
+}
+
+func (s *TemplateService) GetByID(ctx context.Context, tenantID, templateID uuid.UUID) (*models.DocumentTemplate, error) {
+	var t models.DocumentTemplate
+	err := s.db.GetContext(ctx, &t,
+		"SELECT * FROM document_templates WHERE id = $1 AND (tenant_id = $2 OR is_system = true)",
+		templateID, tenantID)
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("getting template: %w", err)
+	}
+	return &t, nil
+}
+
+func (s *TemplateService) Create(ctx context.Context, tenantID uuid.UUID, input CreateTemplateInput) (*models.DocumentTemplate, error) {
+	if input.Name == "" {
+		return nil, fmt.Errorf("name is required")
+	}
+	if !validCategories[input.Category] {
+		return nil, fmt.Errorf("invalid category: %s", input.Category)
+	}
+
+	variables := input.Variables
+	if variables == nil {
+		variables = []byte("[]")
+	}
+
+	var t models.DocumentTemplate
+	err := s.db.GetContext(ctx, &t,
+		`INSERT INTO document_templates (tenant_id, name, description, category, content, variables, is_system)
+		 VALUES ($1, $2, $3, $4, $5, $6, false)
+		 RETURNING *`,
+		tenantID, input.Name, input.Description, input.Category, input.Content, variables)
+	if err != nil {
+		return nil, fmt.Errorf("creating template: %w", err)
+	}
+
+	s.audit.Log(ctx, "create", "document_template", &t.ID, nil, t)
+	return &t, nil
+}
+
+func (s *TemplateService) Update(ctx context.Context, tenantID, templateID uuid.UUID, input UpdateTemplateInput) (*models.DocumentTemplate, error) {
+	// Don't allow editing system templates
+	existing, err := s.GetByID(ctx, tenantID, templateID)
+	if err != nil {
+		return nil, err
+	}
+	if existing == nil {
+		return nil, nil
+	}
+	if existing.IsSystem {
+		return nil, fmt.Errorf("system templates cannot be edited")
+	}
+	if existing.TenantID == nil || *existing.TenantID != tenantID {
+		return nil, fmt.Errorf("template does not belong to tenant")
+	}
+
+	sets := []string{}
+	args := []any{}
+	argIdx := 1
+
+	if input.Name != nil {
+		sets = append(sets, fmt.Sprintf("name = $%d", argIdx))
+		args = append(args, *input.Name)
+		argIdx++
+	}
+	if input.Description != nil {
+		sets = append(sets, fmt.Sprintf("description = $%d", argIdx))
+		args = append(args, *input.Description)
+		argIdx++
+	}
+	if input.Category != nil {
+		if !validCategories[*input.Category] {
+			return nil, fmt.Errorf("invalid category: %s", *input.Category)
+		}
+		sets = append(sets, fmt.Sprintf("category = $%d", argIdx))
+		args = append(args, *input.Category)
+		argIdx++
+	}
+	if input.Content != nil {
+		sets = append(sets, fmt.Sprintf("content = $%d", argIdx))
+		args = append(args, *input.Content)
+		argIdx++
+	}
+	if input.Variables != nil {
+		sets = append(sets, fmt.Sprintf("variables = $%d", argIdx))
+		args = append(args, input.Variables)
+		argIdx++
+	}
+
+	if len(sets) == 0 {
+		return existing, nil
+	}
+
+	sets = append(sets, "updated_at = now()")
+	query := fmt.Sprintf("UPDATE document_templates SET %s WHERE id = $%d AND tenant_id = $%d RETURNING *",
+		strings.Join(sets, ", "), argIdx, argIdx+1)
+	args = append(args, templateID, tenantID)
+
+	var t models.DocumentTemplate
+	if err := s.db.GetContext(ctx, &t, query, args...); err != nil {
+		return nil, fmt.Errorf("updating template: %w", err)
+	}
+
+	s.audit.Log(ctx, "update", "document_template", &t.ID, existing, t)
+	return &t, nil
+}
+
+func (s *TemplateService) Delete(ctx context.Context, tenantID, templateID uuid.UUID) error {
+	// Don't allow deleting system templates
+	existing, err := s.GetByID(ctx, tenantID, templateID)
+	if err != nil {
+		return err
+	}
+	if existing == nil {
+		return fmt.Errorf("template not found")
+	}
+	if existing.IsSystem {
+		return fmt.Errorf("system templates cannot be deleted")
+	}
+	if existing.TenantID == nil || *existing.TenantID != tenantID {
+		return fmt.Errorf("template does not belong to tenant")
+	}
+
+	_, err = s.db.ExecContext(ctx, "DELETE FROM document_templates WHERE id = $1 AND tenant_id = $2", templateID, tenantID)
+	if err != nil {
+		return fmt.Errorf("deleting template: %w", err)
+	}
+
+	s.audit.Log(ctx, "delete", "document_template", &templateID, existing, nil)
+	return nil
+}
+
+// RenderData holds all the data available for template variable replacement.
+type RenderData struct {
+	Case     *models.Case
+	Parties  []models.Party
+	Tenant   *models.Tenant
+	Deadline *models.Deadline
+	UserName string
+	UserEmail string
+}
+
+// Render replaces {{placeholders}} in the template content with actual data.
+func (s *TemplateService) Render(template *models.DocumentTemplate, data RenderData) string {
+	content := template.Content
+
+	now := time.Now()
+
+	replacements := map[string]string{
+		"{{date.today}}":      now.Format("02.01.2006"),
+		"{{date.today_long}}": formatGermanDate(now),
+	}
+
+	// Case data
+	if data.Case != nil {
+		replacements["{{case.number}}"] = data.Case.CaseNumber
+		replacements["{{case.title}}"] = data.Case.Title
+		if data.Case.Court != nil {
+			replacements["{{case.court}}"] = *data.Case.Court
+		}
+		if data.Case.CourtRef != nil {
+			replacements["{{case.court_ref}}"] = *data.Case.CourtRef
+		}
+	}
+
+	// Party data
+	for _, p := range data.Parties {
+		role := ""
+		if p.Role != nil {
+			role = *p.Role
+		}
+		switch role {
+		case "claimant", "plaintiff", "klaeger":
+			replacements["{{party.claimant.name}}"] = p.Name
+			if p.Representative != nil {
+				replacements["{{party.claimant.representative}}"] = *p.Representative
+			}
+		case "defendant", "beklagter":
+			replacements["{{party.defendant.name}}"] = p.Name
+			if p.Representative != nil {
+				replacements["{{party.defendant.representative}}"] = *p.Representative
+			}
+		}
+	}
+
+	// Tenant data
+	if data.Tenant != nil {
+		replacements["{{tenant.name}}"] = data.Tenant.Name
+		// Extract address from settings if available
+		replacements["{{tenant.address}}"] = extractSettingsField(data.Tenant.Settings, "address")
+	}
+
+	// User data
+	replacements["{{user.name}}"] = data.UserName
+	replacements["{{user.email}}"] = data.UserEmail
+
+	// Deadline data
+	if data.Deadline != nil {
+		replacements["{{deadline.title}}"] = data.Deadline.Title
+		replacements["{{deadline.due_date}}"] = data.Deadline.DueDate
+	}
+
+	for placeholder, value := range replacements {
+		content = strings.ReplaceAll(content, placeholder, value)
+	}
+
+	return content
+}
+
+func formatGermanDate(t time.Time) string {
+	months := []string{
+		"Januar", "Februar", "März", "April", "Mai", "Juni",
+		"Juli", "August", "September", "Oktober", "November", "Dezember",
+	}
+	return fmt.Sprintf("%d. %s %d", t.Day(), months[t.Month()-1], t.Year())
+}
+
+func extractSettingsField(settings []byte, field string) string {
+	if len(settings) == 0 {
+		return ""
+	}
+	var m map[string]any
+	if err := json.Unmarshal(settings, &m); err != nil {
+		return ""
+	}
+	if v, ok := m[field]; ok {
+		if s, ok := v.(string); ok {
+			return s
+		}
+	}
+	return ""
+}

backend/internal/services/tenant_service.go

@@ -240,6 +240,54 @@ func (s *TenantService) UpdateMemberRole(ctx context.Context, tenantID, userID u
 	return nil
 }
 
+// AutoAssignByDomain finds a tenant with a matching auto_assign_domains setting
+// and adds the user as a member. Returns the tenant and role, or nil if no match.
+func (s *TenantService) AutoAssignByDomain(ctx context.Context, userID uuid.UUID, emailDomain string) (*models.TenantWithRole, error) {
+	// Find tenant where settings.auto_assign_domains contains this domain
+	var tenant models.Tenant
+	err := s.db.GetContext(ctx, &tenant,
+		`SELECT id, name, slug, settings, created_at, updated_at
+		 FROM tenants
+		 WHERE settings->'auto_assign_domains' ? $1
+		 LIMIT 1`,
+		emailDomain,
+	)
+	if err != nil {
+		return nil, nil // no match — not an error
+	}
+
+	// Check if already a member
+	var exists bool
+	err = s.db.GetContext(ctx, &exists,
+		`SELECT EXISTS(SELECT 1 FROM user_tenants WHERE user_id = $1 AND tenant_id = $2)`,
+		userID, tenant.ID,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("check membership: %w", err)
+	}
+	if exists {
+		// Already a member — return the existing membership
+		role, err := s.GetUserRole(ctx, userID, tenant.ID)
+		if err != nil {
+			return nil, fmt.Errorf("get existing role: %w", err)
+		}
+		return &models.TenantWithRole{Tenant: tenant, Role: role}, nil
+	}
+
+	// Add as member (associate by default for auto-assigned users)
+	role := "associate"
+	_, err = s.db.ExecContext(ctx,
+		`INSERT INTO user_tenants (user_id, tenant_id, role) VALUES ($1, $2, $3)`,
+		userID, tenant.ID, role,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("auto-assign user: %w", err)
+	}
+
+	s.audit.Log(ctx, "create", "auto_membership", &tenant.ID, map[string]any{"domain": emailDomain}, map[string]any{"user_id": userID, "role": role})
+	return &models.TenantWithRole{Tenant: tenant, Role: role}, nil
+}
+
 // RemoveMember removes a user from a tenant. Cannot remove the last owner.
 func (s *TenantService) RemoveMember(ctx context.Context, tenantID, userID uuid.UUID) error {
 	// Check if the user being removed is an owner

backend/internal/services/time_entry_service.go

@@ -0,0 +1,276 @@
+package services
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+
+	"github.com/google/uuid"
+	"github.com/jmoiron/sqlx"
+
+	"mgit.msbls.de/m/KanzlAI-mGMT/internal/models"
+)
+
+type TimeEntryService struct {
+	db    *sqlx.DB
+	audit *AuditService
+}
+
+func NewTimeEntryService(db *sqlx.DB, audit *AuditService) *TimeEntryService {
+	return &TimeEntryService{db: db, audit: audit}
+}
+
+type CreateTimeEntryInput struct {
+	CaseID          uuid.UUID `json:"case_id"`
+	Date            string    `json:"date"`
+	DurationMinutes int       `json:"duration_minutes"`
+	Description     string    `json:"description"`
+	Activity        *string   `json:"activity,omitempty"`
+	Billable        *bool     `json:"billable,omitempty"`
+	HourlyRate      *float64  `json:"hourly_rate,omitempty"`
+}
+
+type UpdateTimeEntryInput struct {
+	Date            *string  `json:"date,omitempty"`
+	DurationMinutes *int     `json:"duration_minutes,omitempty"`
+	Description     *string  `json:"description,omitempty"`
+	Activity        *string  `json:"activity,omitempty"`
+	Billable        *bool    `json:"billable,omitempty"`
+	HourlyRate      *float64 `json:"hourly_rate,omitempty"`
+}
+
+type TimeEntryFilter struct {
+	CaseID *uuid.UUID
+	UserID *uuid.UUID
+	From   string
+	To     string
+	Limit  int
+	Offset int
+}
+
+type TimeEntrySummary struct {
+	GroupKey       string  `db:"group_key" json:"group_key"`
+	TotalMinutes   int     `db:"total_minutes" json:"total_minutes"`
+	BillableMinutes int   `db:"billable_minutes" json:"billable_minutes"`
+	TotalAmount    float64 `db:"total_amount" json:"total_amount"`
+	EntryCount     int     `db:"entry_count" json:"entry_count"`
+}
+
+const timeEntryCols = `id, tenant_id, case_id, user_id, date, duration_minutes, description,
+	activity, billable, billed, invoice_id, hourly_rate, created_at, updated_at`
+
+func (s *TimeEntryService) ListForCase(ctx context.Context, tenantID, caseID uuid.UUID) ([]models.TimeEntry, error) {
+	var entries []models.TimeEntry
+	err := s.db.SelectContext(ctx, &entries,
+		`SELECT `+timeEntryCols+` FROM time_entries
+		 WHERE tenant_id = $1 AND case_id = $2
+		 ORDER BY date DESC, created_at DESC`,
+		tenantID, caseID)
+	if err != nil {
+		return nil, fmt.Errorf("list time entries for case: %w", err)
+	}
+	return entries, nil
+}
+
+func (s *TimeEntryService) List(ctx context.Context, tenantID uuid.UUID, filter TimeEntryFilter) ([]models.TimeEntry, int, error) {
+	if filter.Limit <= 0 {
+		filter.Limit = 20
+	}
+	if filter.Limit > 100 {
+		filter.Limit = 100
+	}
+
+	where := "WHERE tenant_id = $1"
+	args := []any{tenantID}
+	argIdx := 2
+
+	if filter.CaseID != nil {
+		where += fmt.Sprintf(" AND case_id = $%d", argIdx)
+		args = append(args, *filter.CaseID)
+		argIdx++
+	}
+	if filter.UserID != nil {
+		where += fmt.Sprintf(" AND user_id = $%d", argIdx)
+		args = append(args, *filter.UserID)
+		argIdx++
+	}
+	if filter.From != "" {
+		where += fmt.Sprintf(" AND date >= $%d", argIdx)
+		args = append(args, filter.From)
+		argIdx++
+	}
+	if filter.To != "" {
+		where += fmt.Sprintf(" AND date <= $%d", argIdx)
+		args = append(args, filter.To)
+		argIdx++
+	}
+
+	var total int
+	err := s.db.GetContext(ctx, &total,
+		"SELECT COUNT(*) FROM time_entries "+where, args...)
+	if err != nil {
+		return nil, 0, fmt.Errorf("count time entries: %w", err)
+	}
+
+	query := fmt.Sprintf("SELECT %s FROM time_entries %s ORDER BY date DESC, created_at DESC LIMIT $%d OFFSET $%d",
+		timeEntryCols, where, argIdx, argIdx+1)
+	args = append(args, filter.Limit, filter.Offset)
+
+	var entries []models.TimeEntry
+	err = s.db.SelectContext(ctx, &entries, query, args...)
+	if err != nil {
+		return nil, 0, fmt.Errorf("list time entries: %w", err)
+	}
+	return entries, total, nil
+}
+
+func (s *TimeEntryService) GetByID(ctx context.Context, tenantID, entryID uuid.UUID) (*models.TimeEntry, error) {
+	var entry models.TimeEntry
+	err := s.db.GetContext(ctx, &entry,
+		`SELECT `+timeEntryCols+` FROM time_entries WHERE tenant_id = $1 AND id = $2`,
+		tenantID, entryID)
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, fmt.Errorf("get time entry: %w", err)
+	}
+	return &entry, nil
+}
+
+func (s *TimeEntryService) Create(ctx context.Context, tenantID, userID uuid.UUID, input CreateTimeEntryInput) (*models.TimeEntry, error) {
+	billable := true
+	if input.Billable != nil {
+		billable = *input.Billable
+	}
+
+	// If no hourly rate provided, look up the current billing rate
+	hourlyRate := input.HourlyRate
+	if hourlyRate == nil {
+		var rate float64
+		err := s.db.GetContext(ctx, &rate,
+			`SELECT rate FROM billing_rates
+			 WHERE tenant_id = $1 AND (user_id = $2 OR user_id IS NULL)
+			 AND valid_from <= $3 AND (valid_to IS NULL OR valid_to >= $3)
+			 ORDER BY user_id NULLS LAST LIMIT 1`,
+			tenantID, userID, input.Date)
+		if err == nil {
+			hourlyRate = &rate
+		}
+	}
+
+	var entry models.TimeEntry
+	err := s.db.QueryRowxContext(ctx,
+		`INSERT INTO time_entries (tenant_id, case_id, user_id, date, duration_minutes, description, activity, billable, hourly_rate)
+		 VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+		 RETURNING `+timeEntryCols,
+		tenantID, input.CaseID, userID, input.Date, input.DurationMinutes, input.Description, input.Activity, billable, hourlyRate,
+	).StructScan(&entry)
+	if err != nil {
+		return nil, fmt.Errorf("create time entry: %w", err)
+	}
+
+	s.audit.Log(ctx, "create", "time_entry", &entry.ID, nil, entry)
+	return &entry, nil
+}
+
+func (s *TimeEntryService) Update(ctx context.Context, tenantID, entryID uuid.UUID, input UpdateTimeEntryInput) (*models.TimeEntry, error) {
+	old, err := s.GetByID(ctx, tenantID, entryID)
+	if err != nil {
+		return nil, err
+	}
+	if old == nil {
+		return nil, fmt.Errorf("time entry not found")
+	}
+	if old.Billed {
+		return nil, fmt.Errorf("cannot update a billed time entry")
+	}
+
+	var entry models.TimeEntry
+	err = s.db.QueryRowxContext(ctx,
+		`UPDATE time_entries SET
+			date = COALESCE($3, date),
+			duration_minutes = COALESCE($4, duration_minutes),
+			description = COALESCE($5, description),
+			activity = COALESCE($6, activity),
+			billable = COALESCE($7, billable),
+			hourly_rate = COALESCE($8, hourly_rate),
+			updated_at = now()
+		 WHERE tenant_id = $1 AND id = $2
+		 RETURNING `+timeEntryCols,
+		tenantID, entryID, input.Date, input.DurationMinutes, input.Description, input.Activity, input.Billable, input.HourlyRate,
+	).StructScan(&entry)
+	if err != nil {
+		return nil, fmt.Errorf("update time entry: %w", err)
+	}
+
+	s.audit.Log(ctx, "update", "time_entry", &entry.ID, old, entry)
+	return &entry, nil
+}
+
+func (s *TimeEntryService) Delete(ctx context.Context, tenantID, entryID uuid.UUID) error {
+	old, err := s.GetByID(ctx, tenantID, entryID)
+	if err != nil {
+		return err
+	}
+	if old == nil {
+		return fmt.Errorf("time entry not found")
+	}
+	if old.Billed {
+		return fmt.Errorf("cannot delete a billed time entry")
+	}
+
+	_, err = s.db.ExecContext(ctx,
+		`DELETE FROM time_entries WHERE tenant_id = $1 AND id = $2`,
+		tenantID, entryID)
+	if err != nil {
+		return fmt.Errorf("delete time entry: %w", err)
+	}
+
+	s.audit.Log(ctx, "delete", "time_entry", &entryID, old, nil)
+	return nil
+}
+
+func (s *TimeEntryService) Summary(ctx context.Context, tenantID uuid.UUID, groupBy string, from, to string) ([]TimeEntrySummary, error) {
+	var groupExpr string
+	switch groupBy {
+	case "user":
+		groupExpr = "user_id::text"
+	case "month":
+		groupExpr = "to_char(date, 'YYYY-MM')"
+	default:
+		groupExpr = "case_id::text"
+	}
+
+	where := "WHERE tenant_id = $1"
+	args := []any{tenantID}
+	argIdx := 2
+
+	if from != "" {
+		where += fmt.Sprintf(" AND date >= $%d", argIdx)
+		args = append(args, from)
+		argIdx++
+	}
+	if to != "" {
+		where += fmt.Sprintf(" AND date <= $%d", argIdx)
+		args = append(args, to)
+		argIdx++
+	}
+
+	query := fmt.Sprintf(`SELECT %s AS group_key,
+		SUM(duration_minutes) AS total_minutes,
+		SUM(CASE WHEN billable THEN duration_minutes ELSE 0 END) AS billable_minutes,
+		SUM(CASE WHEN billable AND hourly_rate IS NOT NULL THEN duration_minutes * hourly_rate / 60.0 ELSE 0 END) AS total_amount,
+		COUNT(*) AS entry_count
+		FROM time_entries %s
+		GROUP BY %s
+		ORDER BY %s`,
+		groupExpr, where, groupExpr, groupExpr)
+
+	var summaries []TimeEntrySummary
+	err := s.db.SelectContext(ctx, &summaries, query, args...)
+	if err != nil {
+		return nil, fmt.Errorf("time entry summary: %w", err)
+	}
+	return summaries, nil
+}

frontend/bun.lock

@@ -14,6 +14,7 @@
         "react": "19.1.0",
         "react-dom": "19.1.0",
         "react-dropzone": "^15.0.0",
+        "recharts": "^3.8.1",
         "sonner": "^2.0.7",
       },
       "devDependencies": {
@@ -244,6 +245,8 @@
 
     "@open-draft/until": ["@open-draft/until@2.1.0", "", {}, "sha512-U69T3ItWHvLwGg5eJ0n3I62nWuE6ilHlmz7zM0npLBRvPRd7e6NYmg54vvRtP5mZG7kZqZCFVdsTWo7BPtBujg=="],
 
+    "@reduxjs/toolkit": ["@reduxjs/toolkit@2.11.2", "", { "dependencies": { "@standard-schema/spec": "^1.0.0", "@standard-schema/utils": "^0.3.0", "immer": "^11.0.0", "redux": "^5.0.1", "redux-thunk": "^3.1.0", "reselect": "^5.1.0" }, "peerDependencies": { "react": "^16.9.0 || ^17.0.0 || ^18 || ^19", "react-redux": "^7.2.1 || ^8.1.3 || ^9.0.0" }, "optionalPeers": ["react", "react-redux"] }, "sha512-Kd6kAHTA6/nUpp8mySPqj3en3dm0tdMIgbttnQ1xFMVpufoj+ADi8pXLBsd4xzTRHQa7t/Jv8W5UnCuW4kuWMQ=="],
+
     "@rollup/rollup-android-arm-eabi": ["@rollup/rollup-android-arm-eabi@4.60.0", "", { "os": "android", "cpu": "arm" }, "sha512-WOhNW9K8bR3kf4zLxbfg6Pxu2ybOUbB2AjMDHSQx86LIF4rH4Ft7vmMwNt0loO0eonglSNy4cpD3MKXXKQu0/A=="],
 
     "@rollup/rollup-android-arm64": ["@rollup/rollup-android-arm64@4.60.0", "", { "os": "android", "cpu": "arm64" }, "sha512-u6JHLll5QKRvjciE78bQXDmqRqNs5M/3GVqZeMwvmjaNODJih/WIrJlFVEihvV0MiYFmd+ZyPr9wxOVbPAG2Iw=="],
@@ -298,6 +301,10 @@
 
     "@rushstack/eslint-patch": ["@rushstack/eslint-patch@1.16.1", "", {}, "sha512-TvZbIpeKqGQQ7X0zSCvPH9riMSFQFSggnfBjFZ1mEoILW+UuXCKwOoPcgjMwiUtRqFZ8jWhPJc4um14vC6I4ag=="],
 
+    "@standard-schema/spec": ["@standard-schema/spec@1.1.0", "", {}, "sha512-l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w=="],
+
+    "@standard-schema/utils": ["@standard-schema/utils@0.3.0", "", {}, "sha512-e7Mew686owMaPJVNNLs55PUvgz371nKgwsc4vxE49zsODpJEnxgxRo2y/OKrqueavXgZNMDVj3DdHFlaSAeU8g=="],
+
     "@supabase/auth-js": ["@supabase/auth-js@2.100.0", "", { "dependencies": { "tslib": "2.8.1" } }, "sha512-pdT3ye3UVRN1Cg0wom6BmyY+XTtp5DiJaYnPi6j8ht5i8Lq8kfqxJMJz9GI9YDKk3w1nhGOPnh6Qz5qpyYm+1w=="],
 
     "@supabase/functions-js": ["@supabase/functions-js@2.100.0", "", { "dependencies": { "tslib": "2.8.1" } }, "sha512-keLg79RPwP+uiwHuxFPTFgDRxPV46LM4j/swjyR2GKJgWniTVSsgiBHfbIBDcrQwehLepy09b/9QSHUywtKRWQ=="],
@@ -362,6 +369,24 @@
 
     "@types/aria-query": ["@types/aria-query@5.0.4", "", {}, "sha512-rfT93uj5s0PRL7EzccGMs3brplhcrghnDoV26NqKhCAS1hVo+WdNsPvE/yb6ilfr5hi2MEk6d5EWJTKdxg8jVw=="],
 
+    "@types/d3-array": ["@types/d3-array@3.2.2", "", {}, "sha512-hOLWVbm7uRza0BYXpIIW5pxfrKe0W+D5lrFiAEYR+pb6w3N2SwSMaJbXdUfSEv+dT4MfHBLtn5js0LAWaO6otw=="],
+
+    "@types/d3-color": ["@types/d3-color@3.1.3", "", {}, "sha512-iO90scth9WAbmgv7ogoq57O9YpKmFBbmoEoCHDB2xMBY0+/KVrqAaCDyCE16dUspeOvIxFFRI+0sEtqDqy2b4A=="],
+
+    "@types/d3-ease": ["@types/d3-ease@3.0.2", "", {}, "sha512-NcV1JjO5oDzoK26oMzbILE6HW7uVXOHLQvHshBUW4UMdZGfiY6v5BeQwh9a9tCzv+CeefZQHJt5SRgK154RtiA=="],
+
+    "@types/d3-interpolate": ["@types/d3-interpolate@3.0.4", "", { "dependencies": { "@types/d3-color": "*" } }, "sha512-mgLPETlrpVV1YRJIglr4Ez47g7Yxjl1lj7YKsiMCb27VJH9W8NVM6Bb9d8kkpG/uAQS5AmbA48q2IAolKKo1MA=="],
+
+    "@types/d3-path": ["@types/d3-path@3.1.1", "", {}, "sha512-VMZBYyQvbGmWyWVea0EHs/BwLgxc+MKi1zLDCONksozI4YJMcTt8ZEuIR4Sb1MMTE8MMW49v0IwI5+b7RmfWlg=="],
+
+    "@types/d3-scale": ["@types/d3-scale@4.0.9", "", { "dependencies": { "@types/d3-time": "*" } }, "sha512-dLmtwB8zkAeO/juAMfnV+sItKjlsw2lKdZVVy6LRr0cBmegxSABiLEpGVmSJJ8O08i4+sGR6qQtb6WtuwJdvVw=="],
+
+    "@types/d3-shape": ["@types/d3-shape@3.1.8", "", { "dependencies": { "@types/d3-path": "*" } }, "sha512-lae0iWfcDeR7qt7rA88BNiqdvPS5pFVPpo5OfjElwNaT2yyekbM0C9vK+yqBqEmHr6lDkRnYNoTBYlAgJa7a4w=="],
+
+    "@types/d3-time": ["@types/d3-time@3.0.4", "", {}, "sha512-yuzZug1nkAAaBlBBikKZTgzCeA+k1uy4ZFwWANOfKw5z5LRhV0gNA7gNkKm7HoK+HRN0wX3EkxGk0fpbWhmB7g=="],
+
+    "@types/d3-timer": ["@types/d3-timer@3.0.2", "", {}, "sha512-Ps3T8E8dZDam6fUyNiMkekK3XUsaUEik+idO9/YjPtfj2qruF8tFBXS7XhtE4iIXBLxhmLjP3SXpLhVf21I9Lw=="],
+
     "@types/estree": ["@types/estree@1.0.8", "", {}, "sha512-dWHzHa2WqEXI/O1E9OjrocMTKJl2mSrEolh1Iomrv6U+JuNwaHXsXx9bLu5gG7BUWFIN0skIQJQ/L1rIex4X6w=="],
 
     "@types/json-schema": ["@types/json-schema@7.0.15", "", {}, "sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA=="],
@@ -376,6 +401,8 @@
 
     "@types/statuses": ["@types/statuses@2.0.6", "", {}, "sha512-xMAgYwceFhRA2zY+XbEA7mxYbA093wdiW8Vu6gZPGWy9cmOyU9XesH1tNcEWsKFd5Vzrqx5T3D38PWx1FIIXkA=="],
 
+    "@types/use-sync-external-store": ["@types/use-sync-external-store@0.0.6", "", {}, "sha512-zFDAD+tlpf2r4asuHEj0XH6pY6i0g5NeAHPn+15wk3BV6JA69eERFXC1gyGThDkVa1zCyKr5jox1+2LbV/AMLg=="],
+
     "@types/ws": ["@types/ws@8.18.1", "", { "dependencies": { "@types/node": "*" } }, "sha512-ThVF6DCVhA8kUGy+aazFQ4kXQ7E1Ty7A3ypFOe0IcJV8O/M511G99AW24irKrW56Wt44yG9+ij8FaqoBGkuBXg=="],
 
     "@typescript-eslint/eslint-plugin": ["@typescript-eslint/eslint-plugin@8.57.2", "", { "dependencies": { "@eslint-community/regexpp": "^4.12.2", "@typescript-eslint/scope-manager": "8.57.2", "@typescript-eslint/type-utils": "8.57.2", "@typescript-eslint/utils": "8.57.2", "@typescript-eslint/visitor-keys": "8.57.2", "ignore": "^7.0.5", "natural-compare": "^1.4.0", "ts-api-utils": "^2.4.0" }, "peerDependencies": { "@typescript-eslint/parser": "^8.57.2", "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0", "typescript": ">=4.8.4 <6.0.0" } }, "sha512-NZZgp0Fm2IkD+La5PR81sd+g+8oS6JwJje+aRWsDocxHkjyRw0J5L5ZTlN3LI1LlOcGL7ph3eaIUmTXMIjLk0w=="],
@@ -528,6 +555,8 @@
 
     "cliui": ["cliui@8.0.1", "", { "dependencies": { "string-width": "^4.2.0", "strip-ansi": "^6.0.1", "wrap-ansi": "^7.0.0" } }, "sha512-BSeNnyus75C4//NQ9gQt1/csTXyo/8Sb+afLAkzAptFuMsod9HFokGNudZpi/oQV73hnVK+sR+5PVRMd+Dr7YQ=="],
 
+    "clsx": ["clsx@2.1.1", "", {}, "sha512-eYm0QWBtUrBWZWG0d386OGAw16Z995PiOVo2B7bjWSbHedGl5e0ZWaq65kOGgUSNesEIDkB9ISbTg/JK9dhCZA=="],
+
     "color-convert": ["color-convert@2.0.1", "", { "dependencies": { "color-name": "~1.1.4" } }, "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ=="],
 
     "color-name": ["color-name@1.1.4", "", {}, "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA=="],
@@ -546,6 +575,28 @@
 
     "csstype": ["csstype@3.2.3", "", {}, "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ=="],
 
+    "d3-array": ["d3-array@3.2.4", "", { "dependencies": { "internmap": "1 - 2" } }, "sha512-tdQAmyA18i4J7wprpYq8ClcxZy3SC31QMeByyCFyRt7BVHdREQZ5lpzoe5mFEYZUWe+oq8HBvk9JjpibyEV4Jg=="],
+
+    "d3-color": ["d3-color@3.1.0", "", {}, "sha512-zg/chbXyeBtMQ1LbD/WSoW2DpC3I0mpmPdW+ynRTj/x2DAWYrIY7qeZIHidozwV24m4iavr15lNwIwLxRmOxhA=="],
+
+    "d3-ease": ["d3-ease@3.0.1", "", {}, "sha512-wR/XK3D3XcLIZwpbvQwQ5fK+8Ykds1ip7A2Txe0yxncXSdq1L9skcG7blcedkOX+ZcgxGAmLX1FrRGbADwzi0w=="],
+
+    "d3-format": ["d3-format@3.1.2", "", {}, "sha512-AJDdYOdnyRDV5b6ArilzCPPwc1ejkHcoyFarqlPqT7zRYjhavcT3uSrqcMvsgh2CgoPbK3RCwyHaVyxYcP2Arg=="],
+
+    "d3-interpolate": ["d3-interpolate@3.0.1", "", { "dependencies": { "d3-color": "1 - 3" } }, "sha512-3bYs1rOD33uo8aqJfKP3JWPAibgw8Zm2+L9vBKEHJ2Rg+viTR7o5Mmv5mZcieN+FRYaAOWX5SJATX6k1PWz72g=="],
+
+    "d3-path": ["d3-path@3.1.0", "", {}, "sha512-p3KP5HCf/bvjBSSKuXid6Zqijx7wIfNW+J/maPs+iwR35at5JCbLUT0LzF1cnjbCHWhqzQTIN2Jpe8pRebIEFQ=="],
+
+    "d3-scale": ["d3-scale@4.0.2", "", { "dependencies": { "d3-array": "2.10.0 - 3", "d3-format": "1 - 3", "d3-interpolate": "1.2.0 - 3", "d3-time": "2.1.1 - 3", "d3-time-format": "2 - 4" } }, "sha512-GZW464g1SH7ag3Y7hXjf8RoUuAFIqklOAq3MRl4OaWabTFJY9PN/E1YklhXLh+OQ3fM9yS2nOkCoS+WLZ6kvxQ=="],
+
+    "d3-shape": ["d3-shape@3.2.0", "", { "dependencies": { "d3-path": "^3.1.0" } }, "sha512-SaLBuwGm3MOViRq2ABk3eLoxwZELpH6zhl3FbAoJ7Vm1gofKx6El1Ib5z23NUEhF9AsGl7y+dzLe5Cw2AArGTA=="],
+
+    "d3-time": ["d3-time@3.1.0", "", { "dependencies": { "d3-array": "2 - 3" } }, "sha512-VqKjzBLejbSMT4IgbmVgDjpkYrNWUYJnbCGo874u7MMKIWsILRX+OpX/gTk8MqjpT1A/c6HY2dCA77ZN0lkQ2Q=="],
+
+    "d3-time-format": ["d3-time-format@4.1.0", "", { "dependencies": { "d3-time": "1 - 3" } }, "sha512-dJxPBlzC7NugB2PDLwo9Q8JiTR3M3e4/XANkreKSUxF8vvXKqm1Yfq4Q5dl8budlunRVlUUaDUgFt7eA8D6NLg=="],
+
+    "d3-timer": ["d3-timer@3.0.1", "", {}, "sha512-ndfJ/JxxMd3nw31uyKoY2naivF+r29V+Lc0svZxe1JvvIRmi8hUsrMvdOwgS1o6uBHmiz91geQ0ylPP0aj1VUA=="],
+
     "damerau-levenshtein": ["damerau-levenshtein@1.0.8", "", {}, "sha512-sdQSFB7+llfUcQHUQO3+B8ERRj0Oa4w9POWMI/puGtuf7gFywGmkaLCElnudfTiKZV+NvHqL0ifzdrI8Ro7ESA=="],
 
     "data-urls": ["data-urls@5.0.0", "", { "dependencies": { "whatwg-mimetype": "^4.0.0", "whatwg-url": "^14.0.0" } }, "sha512-ZYP5VBHshaDAiVZxjbRVcFJpc+4xGgT0bK3vzy1HLN8jTO975HEbuYzZJcHoQEY5K1a0z8YayJkyVETa08eNTg=="],
@@ -562,6 +613,8 @@
 
     "decimal.js": ["decimal.js@10.6.0", "", {}, "sha512-YpgQiITW3JXGntzdUmyUR1V812Hn8T1YVXhCu+wO3OpS4eU9l4YdD3qjyiKdV6mvV29zapkMeD390UVEf2lkUg=="],
 
+    "decimal.js-light": ["decimal.js-light@2.5.1", "", {}, "sha512-qIMFpTMZmny+MMIitAB6D7iVPEorVw6YQRWkvarTkT4tBeSLLiHzcwj6q0MmYSFCiVpiqPJTJEYIrpcPzVEIvg=="],
+
     "deep-eql": ["deep-eql@5.0.2", "", {}, "sha512-h5k/5U50IJJFpzfL6nO9jaaumfjO/f2NjK/oYB2Djzm4p9L+3T9qWpZqZ2hAbLPuuYq9wrU08WQyBTL5GbPk5Q=="],
 
     "deep-is": ["deep-is@0.1.4", "", {}, "sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ=="],
@@ -606,6 +659,8 @@
 
     "es-to-primitive": ["es-to-primitive@1.3.0", "", { "dependencies": { "is-callable": "^1.2.7", "is-date-object": "^1.0.5", "is-symbol": "^1.0.4" } }, "sha512-w+5mJ3GuFL+NjVtJlvydShqE1eN3h3PbI7/5LAsYJP/2qtuMXjfL2LpHSRqo4b4eSF5K/DH1JXKUAHSB2UW50g=="],
 
+    "es-toolkit": ["es-toolkit@1.45.1", "", {}, "sha512-/jhoOj/Fx+A+IIyDNOvO3TItGmlMKhtX8ISAHKE90c4b/k1tqaqEZ+uUqfpU8DMnW5cgNJv606zS55jGvza0Xw=="],
+
     "esbuild": ["esbuild@0.21.5", "", { "optionalDependencies": { "@esbuild/aix-ppc64": "0.21.5", "@esbuild/android-arm": "0.21.5", "@esbuild/android-arm64": "0.21.5", "@esbuild/android-x64": "0.21.5", "@esbuild/darwin-arm64": "0.21.5", "@esbuild/darwin-x64": "0.21.5", "@esbuild/freebsd-arm64": "0.21.5", "@esbuild/freebsd-x64": "0.21.5", "@esbuild/linux-arm": "0.21.5", "@esbuild/linux-arm64": "0.21.5", "@esbuild/linux-ia32": "0.21.5", "@esbuild/linux-loong64": "0.21.5", "@esbuild/linux-mips64el": "0.21.5", "@esbuild/linux-ppc64": "0.21.5", "@esbuild/linux-riscv64": "0.21.5", "@esbuild/linux-s390x": "0.21.5", "@esbuild/linux-x64": "0.21.5", "@esbuild/netbsd-x64": "0.21.5", "@esbuild/openbsd-x64": "0.21.5", "@esbuild/sunos-x64": "0.21.5", "@esbuild/win32-arm64": "0.21.5", "@esbuild/win32-ia32": "0.21.5", "@esbuild/win32-x64": "0.21.5" }, "bin": { "esbuild": "bin/esbuild" } }, "sha512-mg3OPMV4hXywwpoDxu3Qda5xCKQi+vCTZq8S9J/EpkhB2HzKXq4SNFZE3+NK93JYxc8VMSep+lOUSC/RVKaBqw=="],
 
     "escalade": ["escalade@3.2.0", "", {}, "sha512-WUj2qlxaQtO4g6Pq5c29GTcWGDyd8itL8zTlipgECz3JesAiiOKotd8JU6otB3PACgG6xkJUyVhboMS+bje/jA=="],
@@ -646,6 +701,8 @@
 
     "esutils": ["esutils@2.0.3", "", {}, "sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g=="],
 
+    "eventemitter3": ["eventemitter3@5.0.4", "", {}, "sha512-mlsTRyGaPBjPedk6Bvw+aqbsXDtoAyAzm5MO7JgU+yVRyMQ5O8bD4Kcci7BS85f93veegeCPkL8R4GLClnjLFw=="],
+
     "expect-type": ["expect-type@1.3.0", "", {}, "sha512-knvyeauYhqjOYvQ66MznSMs83wmHrCycNEN6Ao+2AeYEfxUIkuiVxdEa1qlGEPK+We3n0THiDciYSsCcgW/DoA=="],
 
     "fast-deep-equal": ["fast-deep-equal@3.1.3", "", {}, "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q=="],
@@ -736,6 +793,8 @@
 
     "ignore": ["ignore@5.3.2", "", {}, "sha512-hsBTNUqQTDwkWtcdYI2i06Y/nUBEsNEDJKjWdigLvegy8kDuJAS8uRlpkkcQpyEXL0Z/pjDy5HBmMjRCJ2gq+g=="],
 
+    "immer": ["immer@10.2.0", "", {}, "sha512-d/+XTN3zfODyjr89gM3mPq1WNX2B8pYsu7eORitdwyA2sBubnTl3laYlBk4sXY5FUa5qTZGBDPJICVbvqzjlbw=="],
+
     "import-fresh": ["import-fresh@3.3.1", "", { "dependencies": { "parent-module": "^1.0.0", "resolve-from": "^4.0.0" } }, "sha512-TR3KfrTZTYLPB6jUjfx6MF9WcWrHL9su5TObK4ZkYgBdWKPOFoSoQIdEuTuR82pmtxH2spWG9h6etwfr1pLBqQ=="],
 
     "imurmurhash": ["imurmurhash@0.1.4", "", {}, "sha512-JmXMZ6wuvDmLiHEml9ykzqO6lwFbof0GG4IkcGaENdCRDDmMVnny7s5HsIgHCbaq0w2MyPhDqkhTUgS2LU2PHA=="],
@@ -744,6 +803,8 @@
 
     "internal-slot": ["internal-slot@1.1.0", "", { "dependencies": { "es-errors": "^1.3.0", "hasown": "^2.0.2", "side-channel": "^1.1.0" } }, "sha512-4gd7VpWNQNB4UKKCFFVcp1AVv+FMOgs9NKzjHKusc8jTMhd5eL1NqQqOpE0KzMds804/yHlglp3uxgluOqAPLw=="],
 
+    "internmap": ["internmap@2.0.3", "", {}, "sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg=="],
+
     "is-array-buffer": ["is-array-buffer@3.0.5", "", { "dependencies": { "call-bind": "^1.0.8", "call-bound": "^1.0.3", "get-intrinsic": "^1.2.6" } }, "sha512-DDfANUiiG2wC1qawP66qlTugJeL5HyzMpfr8lLK+jMQirGzNod0B12cFB/9q838Ru27sBwfw78/rdoU7RERz6A=="],
 
     "is-async-function": ["is-async-function@2.1.1", "", { "dependencies": { "async-function": "^1.0.0", "call-bound": "^1.0.3", "get-proto": "^1.0.1", "has-tostringtag": "^1.0.2", "safe-regex-test": "^1.1.0" } }, "sha512-9dgM/cZBnNvjzaMYHVoxxfPj2QXt22Ev7SuuPrs+xav0ukGB0S6d4ydZdEiM48kLx5kDV+QBPrpVnFyefL8kkQ=="],
@@ -978,10 +1039,18 @@
 
     "react-dropzone": ["react-dropzone@15.0.0", "", { "dependencies": { "attr-accept": "^2.2.4", "file-selector": "^2.1.0", "prop-types": "^15.8.1" }, "peerDependencies": { "react": ">= 16.8 || 18.0.0" } }, "sha512-lGjYV/EoqEjEWPnmiSvH4v5IoIAwQM2W4Z1C0Q/Pw2xD0eVzKPS359BQTUMum+1fa0kH2nrKjuavmTPOGhpLPg=="],
 
-    "react-is": ["react-is@16.13.1", "", {}, "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ=="],
+    "react-is": ["react-is@17.0.2", "", {}, "sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w=="],
+
+    "react-redux": ["react-redux@9.2.0", "", { "dependencies": { "@types/use-sync-external-store": "^0.0.6", "use-sync-external-store": "^1.4.0" }, "peerDependencies": { "@types/react": "^18.2.25 || ^19", "react": "^18.0 || ^19", "redux": "^5.0.0" }, "optionalPeers": ["@types/react", "redux"] }, "sha512-ROY9fvHhwOD9ySfrF0wmvu//bKCQ6AeZZq1nJNtbDC+kk5DuSuNX/n6YWYF/SYy7bSba4D4FSz8DJeKY/S/r+g=="],
+
+    "recharts": ["recharts@3.8.1", "", { "dependencies": { "@reduxjs/toolkit": "^1.9.0 || 2.x.x", "clsx": "^2.1.1", "decimal.js-light": "^2.5.1", "es-toolkit": "^1.39.3", "eventemitter3": "^5.0.1", "immer": "^10.1.1", "react-redux": "8.x.x || 9.x.x", "reselect": "5.1.1", "tiny-invariant": "^1.3.3", "use-sync-external-store": "^1.2.2", "victory-vendor": "^37.0.2" }, "peerDependencies": { "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0", "react-dom": "^16.0.0 || ^17.0.0 || ^18.0.0 || ^19.0.0", "react-is": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0" } }, "sha512-mwzmO1s9sFL0TduUpwndxCUNoXsBw3u3E/0+A+cLcrSfQitSG62L32N69GhqUrrT5qKcAE3pCGVINC6pqkBBQg=="],
 
     "redent": ["redent@3.0.0", "", { "dependencies": { "indent-string": "^4.0.0", "strip-indent": "^3.0.0" } }, "sha512-6tDA8g98We0zd0GvVeMT9arEOnTw9qM03L9cJXaCjrip1OO764RDBLBfrB4cwzNGDj5OA5ioymC9GkizgWJDUg=="],
 
+    "redux": ["redux@5.0.1", "", {}, "sha512-M9/ELqF6fy8FwmkpnF0S3YKOqMyoWJ4+CS5Efg2ct3oY9daQvd/Pc71FpGZsVsbl3Cpb+IIcjBDUnnyBdQbq4w=="],
+
+    "redux-thunk": ["redux-thunk@3.1.0", "", { "peerDependencies": { "redux": "^5.0.0" } }, "sha512-NW2r5T6ksUKXCabzhL9z+h206HQw/NJkcLm1GPImRQ8IzfXwRGqjVhKJGauHirT0DAuyy6hjdnMZaRoAcy0Klw=="],
+
     "reflect.getprototypeof": ["reflect.getprototypeof@1.0.10", "", { "dependencies": { "call-bind": "^1.0.8", "define-properties": "^1.2.1", "es-abstract": "^1.23.9", "es-errors": "^1.3.0", "es-object-atoms": "^1.0.0", "get-intrinsic": "^1.2.7", "get-proto": "^1.0.1", "which-builtin-type": "^1.2.1" } }, "sha512-00o4I+DVrefhv+nX0ulyi3biSHCPDe+yLv5o/p6d/UVlirijB8E16FtfwSAi4g3tcqrQ4lRAqQSoFEZJehYEcw=="],
 
     "regexp.prototype.flags": ["regexp.prototype.flags@1.5.4", "", { "dependencies": { "call-bind": "^1.0.8", "define-properties": "^1.2.1", "es-errors": "^1.3.0", "get-proto": "^1.0.1", "gopd": "^1.2.0", "set-function-name": "^2.0.2" } }, "sha512-dYqgNSZbDwkaJ2ceRd9ojCGjBq+mOm9LmtXnAnEGyHhN/5R7iDW2TRw3h+o/jCFxus3P2LfWIIiwowAjANm7IA=="],
@@ -990,6 +1059,8 @@
 
     "requires-port": ["requires-port@1.0.0", "", {}, "sha512-KigOCHcocU3XODJxsu8i/j8T9tzT4adHiecwORRQ0ZZFcp7ahwXuRU1m+yuO90C5ZUyGeGfocHDI14M3L3yDAQ=="],
 
+    "reselect": ["reselect@5.1.1", "", {}, "sha512-K/BG6eIky/SBpzfHZv/dd+9JBFiS4SWV7FIujVyJRux6e45+73RaUHXLmIR1f7WOMaQ0U1km6qwklRQxpJJY0w=="],
+
     "resolve": ["resolve@1.22.11", "", { "dependencies": { "is-core-module": "^2.16.1", "path-parse": "^1.0.7", "supports-preserve-symlinks-flag": "^1.0.0" }, "bin": { "resolve": "bin/resolve" } }, "sha512-RfqAvLnMl313r7c9oclB1HhUEAezcpLjz95wFH4LVuhk9JF/r22qmVP9AMmOU4vMX7Q8pN8jwNg/CSpdFnMjTQ=="],
 
     "resolve-from": ["resolve-from@4.0.0", "", {}, "sha512-pb/MYmXstAkysRFx8piNI1tGFNQIFA3vkE3Gq4EuA1dF6gHp/+vgZqsCGJapvy8N3Q+4o7FwvquPJcnZ7RYy4g=="],
@@ -1096,6 +1167,8 @@
 
     "tapable": ["tapable@2.3.2", "", {}, "sha512-1MOpMXuhGzGL5TTCZFItxCc0AARf1EZFQkGqMm7ERKj8+Hgr5oLvJOVFcC+lRmR8hCe2S3jC4T5D7Vg/d7/fhA=="],
 
+    "tiny-invariant": ["tiny-invariant@1.3.3", "", {}, "sha512-+FbBPE1o9QAYvviau/qC5SE3caw21q3xkvWKBtja5vgqOWIHHJ3ioaq1VPfn/Szqctz2bU/oYeKd9/z5BL+PVg=="],
+
     "tinybench": ["tinybench@2.9.0", "", {}, "sha512-0+DUvqWMValLmha6lr4kD8iAMK1HzV0/aKnCtWb9v9641TnP/MFb7Pc2bxoxQjTXAErryXVgUOfv2YqNllqGeg=="],
 
     "tinyexec": ["tinyexec@0.3.2", "", {}, "sha512-KQQR9yN7R5+OSwaK0XQoj22pwHoTlgYqmUscPYoknOoWCWfj/5/ABTMRi69FrKU5ffPVh5QcFikpWJI/P1ocHA=="],
@@ -1152,6 +1225,10 @@
 
     "url-parse": ["url-parse@1.5.10", "", { "dependencies": { "querystringify": "^2.1.1", "requires-port": "^1.0.0" } }, "sha512-WypcfiRhfeUP9vvF0j6rw0J3hrWrw6iZv3+22h6iRMJ/8z1Tj6XfLP4DsUix5MhMPnXpiHDoKyoZ/bdCkwBCiQ=="],
 
+    "use-sync-external-store": ["use-sync-external-store@1.6.0", "", { "peerDependencies": { "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0" } }, "sha512-Pp6GSwGP/NrPIrxVFAIkOQeyw8lFenOHijQWkUTrDvrF4ALqylP2C/KCkeS9dpUM3KvYRQhna5vt7IL95+ZQ9w=="],
+
+    "victory-vendor": ["victory-vendor@37.3.6", "", { "dependencies": { "@types/d3-array": "^3.0.3", "@types/d3-ease": "^3.0.0", "@types/d3-interpolate": "^3.0.1", "@types/d3-scale": "^4.0.2", "@types/d3-shape": "^3.1.0", "@types/d3-time": "^3.0.0", "@types/d3-timer": "^3.0.0", "d3-array": "^3.1.6", "d3-ease": "^3.0.1", "d3-interpolate": "^3.0.1", "d3-scale": "^4.0.2", "d3-shape": "^3.1.0", "d3-time": "^3.0.0", "d3-timer": "^3.0.1" } }, "sha512-SbPDPdDBYp+5MJHhBCAyI7wKM3d5ivekigc2Dk2s7pgbZ9wIgIBYGVw4zGHBml/qTFbexrofXW6Gu4noGxrOwQ=="],
+
     "vite": ["vite@5.4.21", "", { "dependencies": { "esbuild": "^0.21.3", "postcss": "^8.4.43", "rollup": "^4.20.0" }, "optionalDependencies": { "fsevents": "~2.3.3" }, "peerDependencies": { "@types/node": "^18.0.0 || >=20.0.0", "less": "*", "lightningcss": "^1.21.0", "sass": "*", "sass-embedded": "*", "stylus": "*", "sugarss": "*", "terser": "^5.4.0" }, "optionalPeers": ["@types/node", "less", "lightningcss", "sass", "sass-embedded", "stylus", "sugarss", "terser"], "bin": { "vite": "bin/vite.js" } }, "sha512-o5a9xKjbtuhY6Bi5S3+HvbRERmouabWbyUcpXXUA1u+GNUKoROi9byOJ8M0nHbHYHkYICiMlqxkg1KkYmm25Sw=="],
 
     "vite-node": ["vite-node@2.1.8", "", { "dependencies": { "cac": "^6.7.14", "debug": "^4.3.7", "es-module-lexer": "^1.5.4", "pathe": "^1.1.2", "vite": "^5.0.0" }, "bin": { "vite-node": "vite-node.mjs" } }, "sha512-uPAwSr57kYjAUux+8E2j0q0Fxpn8M9VoyfGiRI8Kfktz9NcYMCenwY5RnZxnF1WTu3TGiYipirIzacLL3VVGFg=="],
@@ -1202,6 +1279,8 @@
 
     "@eslint-community/eslint-utils/eslint-visitor-keys": ["eslint-visitor-keys@3.4.3", "", {}, "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag=="],
 
+    "@reduxjs/toolkit/immer": ["immer@11.1.4", "", {}, "sha512-XREFCPo6ksxVzP4E0ekD5aMdf8WMwmdNaz6vuvxgI40UaEiu6q3p8X52aU6GdyvLY3XXX/8R7JOTXStz/nBbRw=="],
+
     "@tailwindcss/oxide-wasm32-wasi/@emnapi/core": ["@emnapi/core@1.9.1", "", { "dependencies": { "@emnapi/wasi-threads": "1.2.0", "tslib": "^2.4.0" }, "bundled": true }, "sha512-mukuNALVsoix/w1BJwFzwXBN/dHeejQtuVzcDsfOEsdpCumXb/E9j8w11h5S54tT1xhifGfbbSm/ICrObRb3KA=="],
 
     "@tailwindcss/oxide-wasm32-wasi/@emnapi/runtime": ["@emnapi/runtime@1.9.1", "", { "dependencies": { "tslib": "^2.4.0" }, "bundled": true }, "sha512-VYi5+ZVLhpgK4hQ0TAjiQiZ6ol0oe4mBx7mVv7IflsiEp0OWoVsp/+f9Vc1hOhE0TtkORVrI1GvzyreqpgWtkA=="],
@@ -1254,7 +1333,7 @@
 
     "pretty-format/ansi-styles": ["ansi-styles@5.2.0", "", {}, "sha512-Cxwpt2SfTzTtXcfOlzGEee8O+c+MmUgGrNiBcXnuWxuFJHe6a5Hz7qwhwe5OgaSYI0IJvkLqWX1ASG+cJOkEiA=="],
 
-    "pretty-format/react-is": ["react-is@17.0.2", "", {}, "sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w=="],
+    "prop-types/react-is": ["react-is@16.13.1", "", {}, "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ=="],
 
     "sharp/semver": ["semver@7.7.4", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA=="],
 

frontend/package.json

@@ -20,6 +20,7 @@
     "react": "19.1.0",
     "react-dom": "19.1.0",
     "react-dropzone": "^15.0.0",
+    "recharts": "^3.8.1",
     "sonner": "^2.0.7"
   },
   "devDependencies": {

frontend/src/app/(app)/abrechnung/page.tsx

@@ -0,0 +1,164 @@
+"use client";
+
+import { useQuery } from "@tanstack/react-query";
+import { api } from "@/lib/api";
+import type { TimeEntry } from "@/lib/types";
+import { format } from "date-fns";
+import { de } from "date-fns/locale";
+import { Timer, Loader2 } from "lucide-react";
+import { useState } from "react";
+import Link from "next/link";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+
+function formatDuration(minutes: number): string {
+  const h = Math.floor(minutes / 60);
+  const m = minutes % 60;
+  if (h === 0) return `${m}min`;
+  if (m === 0) return `${h}h`;
+  return `${h}h ${m}min`;
+}
+
+export default function AbrechnungPage() {
+  const [from, setFrom] = useState(() => {
+    const d = new Date();
+    d.setDate(1);
+    return format(d, "yyyy-MM-dd");
+  });
+  const [to, setTo] = useState(() => format(new Date(), "yyyy-MM-dd"));
+
+  const { data, isLoading } = useQuery({
+    queryKey: ["time-entries", from, to],
+    queryFn: () =>
+      api.get<{ time_entries: TimeEntry[]; total: number }>(
+        `/time-entries?from=${from}&to=${to}&limit=100`,
+      ),
+  });
+
+  const entries = data?.time_entries ?? [];
+  const totalMinutes = entries.reduce((s, e) => s + e.duration_minutes, 0);
+  const billableMinutes = entries
+    .filter((e) => e.billable)
+    .reduce((s, e) => s + e.duration_minutes, 0);
+  const totalAmount = entries
+    .filter((e) => e.billable && e.hourly_rate)
+    .reduce((s, e) => s + (e.duration_minutes / 60) * (e.hourly_rate ?? 0), 0);
+
+  return (
+    <div className="animate-fade-in">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Abrechnung" },
+        ]}
+      />
+
+      <div className="mt-4 flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
+        <h1 className="text-lg font-semibold text-neutral-900">
+          Zeiterfassung
+        </h1>
+        <Link
+          href="/abrechnung/rechnungen"
+          className="text-sm text-neutral-500 transition-colors hover:text-neutral-700"
+        >
+          Rechnungen ansehen &rarr;
+        </Link>
+      </div>
+
+      {/* Filters */}
+      <div className="mt-4 flex flex-wrap items-center gap-3">
+        <div className="flex items-center gap-2">
+          <label className="text-xs text-neutral-500">Von</label>
+          <input
+            type="date"
+            value={from}
+            onChange={(e) => setFrom(e.target.value)}
+            className="rounded-md border border-neutral-300 px-2 py-1 text-sm focus:border-neutral-500 focus:outline-none"
+          />
+        </div>
+        <div className="flex items-center gap-2">
+          <label className="text-xs text-neutral-500">Bis</label>
+          <input
+            type="date"
+            value={to}
+            onChange={(e) => setTo(e.target.value)}
+            className="rounded-md border border-neutral-300 px-2 py-1 text-sm focus:border-neutral-500 focus:outline-none"
+          />
+        </div>
+      </div>
+
+      {/* Summary cards */}
+      <div className="mt-4 grid grid-cols-1 gap-3 sm:grid-cols-3">
+        <div className="rounded-md border border-neutral-200 bg-white p-4">
+          <p className="text-xs text-neutral-500">Gesamt</p>
+          <p className="mt-1 text-xl font-semibold text-neutral-900">
+            {formatDuration(totalMinutes)}
+          </p>
+        </div>
+        <div className="rounded-md border border-neutral-200 bg-white p-4">
+          <p className="text-xs text-neutral-500">Abrechenbar</p>
+          <p className="mt-1 text-xl font-semibold text-neutral-900">
+            {formatDuration(billableMinutes)}
+          </p>
+        </div>
+        <div className="rounded-md border border-neutral-200 bg-white p-4">
+          <p className="text-xs text-neutral-500">Betrag</p>
+          <p className="mt-1 text-xl font-semibold text-neutral-900">
+            {totalAmount.toFixed(2)} EUR
+          </p>
+        </div>
+      </div>
+
+      {/* Entries */}
+      {isLoading ? (
+        <div className="flex items-center justify-center py-8">
+          <Loader2 className="h-5 w-5 animate-spin text-neutral-400" />
+        </div>
+      ) : entries.length === 0 ? (
+        <div className="flex flex-col items-center py-12 text-center">
+          <div className="rounded-xl bg-neutral-100 p-3">
+            <Timer className="h-5 w-5 text-neutral-400" />
+          </div>
+          <p className="mt-2 text-sm text-neutral-500">
+            Keine Zeiteintraege im gewaehlten Zeitraum.
+          </p>
+        </div>
+      ) : (
+        <div className="mt-4 space-y-2">
+          {entries.map((entry) => (
+            <div
+              key={entry.id}
+              className="flex items-center justify-between rounded-md border border-neutral-200 bg-white px-4 py-3"
+            >
+              <div className="min-w-0 flex-1">
+                <p className="text-sm font-medium text-neutral-900 truncate">
+                  {entry.description}
+                </p>
+                <div className="mt-0.5 flex gap-3 text-xs text-neutral-500">
+                  <span>
+                    {format(new Date(entry.date), "d. MMM yyyy", { locale: de })}
+                  </span>
+                  <Link
+                    href={`/cases/${entry.case_id}/zeiterfassung`}
+                    className="hover:text-neutral-700"
+                  >
+                    Akte ansehen
+                  </Link>
+                </div>
+              </div>
+              <div className="flex items-center gap-4 ml-4 text-sm">
+                {entry.billable ? (
+                  <span className="text-emerald-600">abrechenbar</span>
+                ) : (
+                  <span className="text-neutral-400">intern</span>
+                )}
+                <span className="font-medium text-neutral-900 whitespace-nowrap">
+                  {formatDuration(entry.duration_minutes)}
+                </span>
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/app/(app)/abrechnung/rechnungen/[id]/page.tsx

@@ -0,0 +1,225 @@
+"use client";
+
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import { useParams } from "next/navigation";
+import { api } from "@/lib/api";
+import type { Invoice } from "@/lib/types";
+import { format } from "date-fns";
+import { de } from "date-fns/locale";
+import { Loader2, AlertTriangle } from "lucide-react";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+
+const STATUS_BADGE: Record<string, string> = {
+  draft: "bg-neutral-100 text-neutral-600",
+  sent: "bg-blue-50 text-blue-700",
+  paid: "bg-emerald-50 text-emerald-700",
+  cancelled: "bg-red-50 text-red-600",
+};
+
+const STATUS_LABEL: Record<string, string> = {
+  draft: "Entwurf",
+  sent: "Versendet",
+  paid: "Bezahlt",
+  cancelled: "Storniert",
+};
+
+const TRANSITIONS: Record<string, { label: string; next: string }[]> = {
+  draft: [
+    { label: "Als versendet markieren", next: "sent" },
+    { label: "Stornieren", next: "cancelled" },
+  ],
+  sent: [
+    { label: "Als bezahlt markieren", next: "paid" },
+    { label: "Stornieren", next: "cancelled" },
+  ],
+  paid: [],
+  cancelled: [],
+};
+
+export default function InvoiceDetailPage() {
+  const { id } = useParams<{ id: string }>();
+  const queryClient = useQueryClient();
+
+  const { data: invoice, isLoading, error } = useQuery({
+    queryKey: ["invoice", id],
+    queryFn: () => api.get<Invoice>(`/invoices/${id}`),
+  });
+
+  const statusMutation = useMutation({
+    mutationFn: (status: string) =>
+      api.patch<Invoice>(`/invoices/${id}/status`, { status }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["invoice", id] });
+      queryClient.invalidateQueries({ queryKey: ["invoices"] });
+    },
+  });
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center py-12">
+        <Loader2 className="h-5 w-5 animate-spin text-neutral-400" />
+      </div>
+    );
+  }
+
+  if (error || !invoice) {
+    return (
+      <div className="py-12 text-center">
+        <AlertTriangle className="mx-auto h-6 w-6 text-red-500" />
+        <p className="mt-2 text-sm text-neutral-500">
+          Rechnung nicht gefunden.
+        </p>
+      </div>
+    );
+  }
+
+  const items = Array.isArray(invoice.items) ? invoice.items : [];
+  const actions = TRANSITIONS[invoice.status] ?? [];
+
+  return (
+    <div className="animate-fade-in">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Abrechnung", href: "/abrechnung" },
+          { label: "Rechnungen", href: "/abrechnung/rechnungen" },
+          { label: invoice.invoice_number },
+        ]}
+      />
+
+      <div className="mt-4 flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
+        <div>
+          <div className="flex items-center gap-3">
+            <h1 className="text-lg font-semibold text-neutral-900">
+              {invoice.invoice_number}
+            </h1>
+            <span
+              className={`rounded-full px-2 py-0.5 text-xs font-medium ${STATUS_BADGE[invoice.status]}`}
+            >
+              {STATUS_LABEL[invoice.status]}
+            </span>
+          </div>
+          <p className="mt-1 text-sm text-neutral-500">
+            {invoice.client_name}
+          </p>
+        </div>
+        <div className="flex gap-2">
+          {actions.map((action) => (
+            <button
+              key={action.next}
+              onClick={() => statusMutation.mutate(action.next)}
+              disabled={statusMutation.isPending}
+              className="rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white transition-colors hover:bg-neutral-800 disabled:opacity-50"
+            >
+              {action.label}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      {/* Invoice details */}
+      <div className="mt-6 rounded-md border border-neutral-200 bg-white">
+        {/* Client info */}
+        <div className="border-b border-neutral-100 p-4">
+          <p className="text-xs text-neutral-500">Empfaenger</p>
+          <p className="mt-1 text-sm font-medium text-neutral-900">
+            {invoice.client_name}
+          </p>
+          {invoice.client_address && (
+            <p className="mt-0.5 text-sm text-neutral-500 whitespace-pre-line">
+              {invoice.client_address}
+            </p>
+          )}
+        </div>
+
+        {/* Dates */}
+        <div className="flex flex-wrap gap-6 border-b border-neutral-100 p-4">
+          {invoice.issued_at && (
+            <div>
+              <p className="text-xs text-neutral-500">Rechnungsdatum</p>
+              <p className="mt-0.5 text-sm text-neutral-900">
+                {format(new Date(invoice.issued_at), "d. MMMM yyyy", { locale: de })}
+              </p>
+            </div>
+          )}
+          {invoice.due_at && (
+            <div>
+              <p className="text-xs text-neutral-500">Faellig am</p>
+              <p className="mt-0.5 text-sm text-neutral-900">
+                {format(new Date(invoice.due_at), "d. MMMM yyyy", { locale: de })}
+              </p>
+            </div>
+          )}
+          {invoice.paid_at && (
+            <div>
+              <p className="text-xs text-neutral-500">Bezahlt am</p>
+              <p className="mt-0.5 text-sm text-neutral-900">
+                {format(new Date(invoice.paid_at), "d. MMMM yyyy", { locale: de })}
+              </p>
+            </div>
+          )}
+        </div>
+
+        {/* Line items */}
+        <div className="p-4">
+          <table className="w-full text-sm">
+            <thead>
+              <tr className="border-b border-neutral-100 text-left text-xs text-neutral-500">
+                <th className="pb-2 font-medium">Beschreibung</th>
+                <th className="pb-2 font-medium text-right">Betrag</th>
+              </tr>
+            </thead>
+            <tbody>
+              {items.map((item, i) => (
+                <tr key={i} className="border-b border-neutral-50">
+                  <td className="py-2 text-neutral-900">
+                    {item.description}
+                    {item.duration_minutes && item.hourly_rate && (
+                      <span className="ml-2 text-xs text-neutral-400">
+                        ({Math.floor(item.duration_minutes / 60)}h{" "}
+                        {item.duration_minutes % 60}min x {item.hourly_rate} EUR/h)
+                      </span>
+                    )}
+                  </td>
+                  <td className="py-2 text-right text-neutral-900">
+                    {item.amount.toFixed(2)} EUR
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+
+        {/* Totals */}
+        <div className="border-t border-neutral-200 p-4">
+          <div className="flex justify-end">
+            <div className="w-48 space-y-1">
+              <div className="flex justify-between text-sm">
+                <span className="text-neutral-500">Netto</span>
+                <span>{invoice.subtotal.toFixed(2)} EUR</span>
+              </div>
+              <div className="flex justify-between text-sm">
+                <span className="text-neutral-500">
+                  USt. {invoice.tax_rate}%
+                </span>
+                <span>{invoice.tax_amount.toFixed(2)} EUR</span>
+              </div>
+              <div className="flex justify-between border-t border-neutral-200 pt-1 text-sm font-semibold">
+                <span>Gesamt</span>
+                <span>{invoice.total.toFixed(2)} EUR</span>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        {/* Notes */}
+        {invoice.notes && (
+          <div className="border-t border-neutral-100 p-4">
+            <p className="text-xs text-neutral-500">Anmerkungen</p>
+            <p className="mt-1 text-sm text-neutral-700">{invoice.notes}</p>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

frontend/src/app/(app)/abrechnung/rechnungen/page.tsx

@@ -0,0 +1,118 @@
+"use client";
+
+import { useQuery } from "@tanstack/react-query";
+import { api } from "@/lib/api";
+import type { Invoice } from "@/lib/types";
+import { format } from "date-fns";
+import { de } from "date-fns/locale";
+import { Receipt, Loader2 } from "lucide-react";
+import Link from "next/link";
+import { useState } from "react";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+
+const STATUS_BADGE: Record<string, string> = {
+  draft: "bg-neutral-100 text-neutral-600",
+  sent: "bg-blue-50 text-blue-700",
+  paid: "bg-emerald-50 text-emerald-700",
+  cancelled: "bg-red-50 text-red-600",
+};
+
+const STATUS_LABEL: Record<string, string> = {
+  draft: "Entwurf",
+  sent: "Versendet",
+  paid: "Bezahlt",
+  cancelled: "Storniert",
+};
+
+export default function RechnungenPage() {
+  const [statusFilter, setStatusFilter] = useState("");
+
+  const { data, isLoading } = useQuery({
+    queryKey: ["invoices", statusFilter],
+    queryFn: () => {
+      const params = statusFilter ? `?status=${statusFilter}` : "";
+      return api.get<{ invoices: Invoice[] }>(`/invoices${params}`);
+    },
+  });
+
+  const invoices = data?.invoices ?? [];
+
+  return (
+    <div className="animate-fade-in">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Abrechnung", href: "/abrechnung" },
+          { label: "Rechnungen" },
+        ]}
+      />
+
+      <div className="mt-4 flex items-center justify-between">
+        <h1 className="text-lg font-semibold text-neutral-900">Rechnungen</h1>
+      </div>
+
+      {/* Filters */}
+      <div className="mt-4 flex gap-2">
+        {["", "draft", "sent", "paid", "cancelled"].map((s) => (
+          <button
+            key={s}
+            onClick={() => setStatusFilter(s)}
+            className={`rounded-md px-2.5 py-1 text-xs font-medium transition-colors ${
+              statusFilter === s
+                ? "bg-neutral-900 text-white"
+                : "bg-neutral-100 text-neutral-600 hover:bg-neutral-200"
+            }`}
+          >
+            {s === "" ? "Alle" : STATUS_LABEL[s]}
+          </button>
+        ))}
+      </div>
+
+      {isLoading ? (
+        <div className="flex items-center justify-center py-8">
+          <Loader2 className="h-5 w-5 animate-spin text-neutral-400" />
+        </div>
+      ) : invoices.length === 0 ? (
+        <div className="flex flex-col items-center py-12 text-center">
+          <div className="rounded-xl bg-neutral-100 p-3">
+            <Receipt className="h-5 w-5 text-neutral-400" />
+          </div>
+          <p className="mt-2 text-sm text-neutral-500">
+            Keine Rechnungen vorhanden.
+          </p>
+        </div>
+      ) : (
+        <div className="mt-4 space-y-2">
+          {invoices.map((inv) => (
+            <Link
+              key={inv.id}
+              href={`/abrechnung/rechnungen/${inv.id}`}
+              className="flex items-center justify-between rounded-md border border-neutral-200 bg-white px-4 py-3 transition-colors hover:bg-neutral-50"
+            >
+              <div>
+                <div className="flex items-center gap-2">
+                  <p className="text-sm font-medium text-neutral-900">
+                    {inv.invoice_number}
+                  </p>
+                  <span
+                    className={`rounded-full px-2 py-0.5 text-xs font-medium ${STATUS_BADGE[inv.status]}`}
+                  >
+                    {STATUS_LABEL[inv.status]}
+                  </span>
+                </div>
+                <p className="mt-0.5 text-xs text-neutral-500">
+                  {inv.client_name}
+                  {inv.issued_at &&
+                    ` — ${format(new Date(inv.issued_at), "d. MMM yyyy", { locale: de })}`}
+                </p>
+              </div>
+              <p className="text-sm font-semibold text-neutral-900">
+                {inv.total.toFixed(2)} EUR
+              </p>
+            </Link>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/app/(app)/berichte/page.tsx

@@ -0,0 +1,262 @@
+"use client";
+
+import { useState } from "react";
+import { useQuery } from "@tanstack/react-query";
+import { api } from "@/lib/api";
+import type {
+  CaseReport,
+  DeadlineReport,
+  WorkloadReport,
+  BillingReport,
+} from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import { Skeleton } from "@/components/ui/Skeleton";
+import {
+  AlertTriangle,
+  RefreshCw,
+  Download,
+  Printer,
+  FolderOpen,
+  Clock,
+  Users,
+  Receipt,
+} from "lucide-react";
+import { CasesTab } from "@/components/reports/CasesTab";
+import { DeadlinesTab } from "@/components/reports/DeadlinesTab";
+import { WorkloadTab } from "@/components/reports/WorkloadTab";
+import { BillingTab } from "@/components/reports/BillingTab";
+
+type TabKey = "cases" | "deadlines" | "workload" | "billing";
+
+const TABS: { key: TabKey; label: string; icon: typeof FolderOpen }[] = [
+  { key: "cases", label: "Akten", icon: FolderOpen },
+  { key: "deadlines", label: "Fristen", icon: Clock },
+  { key: "workload", label: "Auslastung", icon: Users },
+  { key: "billing", label: "Abrechnung", icon: Receipt },
+];
+
+function getDefaultDateRange(): { from: string; to: string } {
+  const now = new Date();
+  const from = new Date(now.getFullYear() - 1, now.getMonth(), 1);
+  return {
+    from: from.toISOString().split("T")[0],
+    to: now.toISOString().split("T")[0],
+  };
+}
+
+function ReportSkeleton() {
+  return (
+    <div className="space-y-6">
+      <div className="grid grid-cols-1 gap-4 sm:grid-cols-3">
+        {[1, 2, 3].map((i) => (
+          <Skeleton key={i} className="h-24 rounded-xl" />
+        ))}
+      </div>
+      <Skeleton className="h-72 rounded-xl" />
+      <Skeleton className="h-48 rounded-xl" />
+    </div>
+  );
+}
+
+export default function BerichtePage() {
+  const [activeTab, setActiveTab] = useState<TabKey>("cases");
+  const defaults = getDefaultDateRange();
+  const [from, setFrom] = useState(defaults.from);
+  const [to, setTo] = useState(defaults.to);
+
+  const queryParams = `?from=${from}&to=${to}`;
+
+  const casesQuery = useQuery({
+    queryKey: ["reports", "cases", from, to],
+    queryFn: () => api.get<CaseReport>(`/reports/cases${queryParams}`),
+    enabled: activeTab === "cases",
+  });
+
+  const deadlinesQuery = useQuery({
+    queryKey: ["reports", "deadlines", from, to],
+    queryFn: () => api.get<DeadlineReport>(`/reports/deadlines${queryParams}`),
+    enabled: activeTab === "deadlines",
+  });
+
+  const workloadQuery = useQuery({
+    queryKey: ["reports", "workload", from, to],
+    queryFn: () => api.get<WorkloadReport>(`/reports/workload${queryParams}`),
+    enabled: activeTab === "workload",
+  });
+
+  const billingQuery = useQuery({
+    queryKey: ["reports", "billing", from, to],
+    queryFn: () => api.get<BillingReport>(`/reports/billing${queryParams}`),
+    enabled: activeTab === "billing",
+  });
+
+  const currentQuery = {
+    cases: casesQuery,
+    deadlines: deadlinesQuery,
+    workload: workloadQuery,
+    billing: billingQuery,
+  }[activeTab];
+
+  function exportCSV() {
+    if (!currentQuery.data) return;
+    let csv = "";
+    const data = currentQuery.data;
+
+    if (activeTab === "cases") {
+      const d = data as CaseReport;
+      csv = "Monat,Eroeffnet,Geschlossen,Aktiv\n";
+      csv += d.monthly
+        .map((r) => `${r.period},${r.opened},${r.closed},${r.active}`)
+        .join("\n");
+    } else if (activeTab === "deadlines") {
+      const d = data as DeadlineReport;
+      csv = "Monat,Gesamt,Eingehalten,Versaeumt,Ausstehend,Quote (%)\n";
+      csv += d.monthly
+        .map(
+          (r) =>
+            `${r.period},${r.total},${r.met},${r.missed},${r.pending},${r.compliance_rate.toFixed(1)}`,
+        )
+        .join("\n");
+    } else if (activeTab === "workload") {
+      const d = data as WorkloadReport;
+      csv = "Benutzer-ID,Aktive Akten,Fristen,Ueberfaellig,Erledigt\n";
+      csv += d.users
+        .map(
+          (r) =>
+            `${r.user_id},${r.active_cases},${r.deadlines},${r.overdue},${r.completed}`,
+        )
+        .join("\n");
+    } else if (activeTab === "billing") {
+      const d = data as BillingReport;
+      csv = "Monat,Aktiv,Geschlossen,Neu\n";
+      csv += d.monthly
+        .map(
+          (r) =>
+            `${r.period},${r.cases_active},${r.cases_closed},${r.cases_new}`,
+        )
+        .join("\n");
+    }
+
+    const blob = new Blob([csv], { type: "text/csv;charset=utf-8;" });
+    const url = URL.createObjectURL(blob);
+    const link = document.createElement("a");
+    link.href = url;
+    link.download = `bericht-${activeTab}-${from}-${to}.csv`;
+    link.click();
+    URL.revokeObjectURL(url);
+  }
+
+  return (
+    <div className="animate-fade-in mx-auto max-w-6xl space-y-6 print:max-w-none">
+      <div className="print:hidden">
+        <Breadcrumb items={[{ label: "Berichte" }]} />
+      </div>
+
+      <div className="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
+        <div>
+          <h1 className="text-lg font-semibold text-neutral-900">Berichte</h1>
+          <p className="mt-0.5 text-sm text-neutral-500">
+            Statistiken und Auswertungen
+          </p>
+        </div>
+
+        <div className="flex items-center gap-3 print:hidden">
+          <div className="flex items-center gap-2 text-sm">
+            <label className="text-neutral-500">Von</label>
+            <input
+              type="date"
+              value={from}
+              onChange={(e) => setFrom(e.target.value)}
+              className="rounded-md border border-neutral-200 bg-white px-2.5 py-1.5 text-sm text-neutral-900 outline-none focus:border-neutral-400"
+            />
+            <label className="text-neutral-500">Bis</label>
+            <input
+              type="date"
+              value={to}
+              onChange={(e) => setTo(e.target.value)}
+              className="rounded-md border border-neutral-200 bg-white px-2.5 py-1.5 text-sm text-neutral-900 outline-none focus:border-neutral-400"
+            />
+          </div>
+
+          <button
+            onClick={exportCSV}
+            disabled={!currentQuery.data}
+            className="inline-flex items-center gap-1.5 rounded-md border border-neutral-200 bg-white px-3 py-1.5 text-sm font-medium text-neutral-700 transition-colors hover:bg-neutral-50 disabled:opacity-50"
+          >
+            <Download className="h-3.5 w-3.5" />
+            CSV
+          </button>
+
+          <button
+            onClick={() => window.print()}
+            className="inline-flex items-center gap-1.5 rounded-md border border-neutral-200 bg-white px-3 py-1.5 text-sm font-medium text-neutral-700 transition-colors hover:bg-neutral-50"
+          >
+            <Printer className="h-3.5 w-3.5" />
+            Drucken
+          </button>
+        </div>
+      </div>
+
+      {/* Tabs */}
+      <div className="border-b border-neutral-200 print:hidden">
+        <nav className="-mb-px flex gap-6">
+          {TABS.map((tab) => (
+            <button
+              key={tab.key}
+              onClick={() => setActiveTab(tab.key)}
+              className={`flex items-center gap-1.5 border-b-2 py-2.5 text-sm font-medium transition-colors ${
+                activeTab === tab.key
+                  ? "border-neutral-900 text-neutral-900"
+                  : "border-transparent text-neutral-500 hover:border-neutral-300 hover:text-neutral-700"
+              }`}
+            >
+              <tab.icon className="h-4 w-4" />
+              {tab.label}
+            </button>
+          ))}
+        </nav>
+      </div>
+
+      {/* Tab content */}
+      {currentQuery.isLoading && <ReportSkeleton />}
+
+      {currentQuery.error && (
+        <div className="py-12 text-center">
+          <div className="mx-auto mb-3 w-fit rounded-xl bg-red-50 p-3">
+            <AlertTriangle className="h-6 w-6 text-red-500" />
+          </div>
+          <h2 className="text-sm font-medium text-neutral-900">
+            Bericht konnte nicht geladen werden
+          </h2>
+          <p className="mt-1 text-sm text-neutral-500">
+            Bitte versuchen Sie es erneut.
+          </p>
+          <button
+            onClick={() => currentQuery.refetch()}
+            className="mt-4 inline-flex items-center gap-1.5 rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white transition-colors hover:bg-neutral-800"
+          >
+            <RefreshCw className="h-3.5 w-3.5" />
+            Erneut laden
+          </button>
+        </div>
+      )}
+
+      {!currentQuery.isLoading && !currentQuery.error && currentQuery.data && (
+        <>
+          {activeTab === "cases" && (
+            <CasesTab data={currentQuery.data as CaseReport} />
+          )}
+          {activeTab === "deadlines" && (
+            <DeadlinesTab data={currentQuery.data as DeadlineReport} />
+          )}
+          {activeTab === "workload" && (
+            <WorkloadTab data={currentQuery.data as WorkloadReport} />
+          )}
+          {activeTab === "billing" && (
+            <BillingTab data={currentQuery.data as BillingReport} />
+          )}
+        </>
+      )}
+    </div>
+  );
+}

frontend/src/app/(app)/cases/[id]/ki/page.tsx

@@ -0,0 +1,51 @@
+"use client";
+
+import { useState } from "react";
+import { useParams } from "next/navigation";
+import { Brain, FileText, Search } from "lucide-react";
+import { CaseStrategy } from "@/components/ai/CaseStrategy";
+import { DocumentDrafter } from "@/components/ai/DocumentDrafter";
+import { SimilarCaseFinder } from "@/components/ai/SimilarCaseFinder";
+
+type AITab = "strategy" | "draft" | "similar";
+
+const TABS: { id: AITab; label: string; icon: typeof Brain }[] = [
+  { id: "strategy", label: "KI-Strategie", icon: Brain },
+  { id: "draft", label: "KI-Entwurf", icon: FileText },
+  { id: "similar", label: "Aehnliche Faelle", icon: Search },
+];
+
+export default function CaseAIPage() {
+  const { id } = useParams<{ id: string }>();
+  const [activeTab, setActiveTab] = useState<AITab>("strategy");
+
+  return (
+    <div>
+      {/* Sub-tabs */}
+      <div className="mb-6 flex gap-1 rounded-lg border border-neutral-200 bg-neutral-50 p-1">
+        {TABS.map((tab) => {
+          const isActive = activeTab === tab.id;
+          return (
+            <button
+              key={tab.id}
+              onClick={() => setActiveTab(tab.id)}
+              className={`inline-flex flex-1 items-center justify-center gap-1.5 rounded-md px-3 py-2 text-sm font-medium transition-colors ${
+                isActive
+                  ? "bg-white text-neutral-900 shadow-sm"
+                  : "text-neutral-500 hover:text-neutral-700"
+              }`}
+            >
+              <tab.icon className="h-4 w-4" />
+              {tab.label}
+            </button>
+          );
+        })}
+      </div>
+
+      {/* Content */}
+      {activeTab === "strategy" && <CaseStrategy caseId={id} />}
+      {activeTab === "draft" && <DocumentDrafter caseId={id} />}
+      {activeTab === "similar" && <SimilarCaseFinder caseId={id} />}
+    </div>
+  );
+}

frontend/src/app/(app)/cases/[id]/layout.tsx

@@ -17,6 +17,7 @@ import {
   StickyNote,
   AlertTriangle,
   ScrollText,
+  Brain,
 } from "lucide-react";
 import { format } from "date-fns";
 import { de } from "date-fns/locale";
@@ -48,6 +49,7 @@ const TABS = [
   { segment: "mitarbeiter", label: "Mitarbeiter", icon: UserCheck },
   { segment: "notizen", label: "Notizen", icon: StickyNote },
   { segment: "protokoll", label: "Protokoll", icon: ScrollText },
+  { segment: "ki", label: "KI", icon: Brain },
 ] as const;
 
 const TAB_LABELS: Record<string, string> = {
@@ -58,6 +60,7 @@ const TAB_LABELS: Record<string, string> = {
   mitarbeiter: "Mitarbeiter",
   notizen: "Notizen",
   protokoll: "Protokoll",
+  ki: "KI",
 };
 
 function CaseDetailSkeleton() {

frontend/src/app/(app)/cases/[id]/zeiterfassung/page.tsx

@@ -0,0 +1,306 @@
+"use client";
+
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import { useParams } from "next/navigation";
+import { api } from "@/lib/api";
+import type { TimeEntry } from "@/lib/types";
+import { format } from "date-fns";
+import { de } from "date-fns/locale";
+import { Timer, Loader2, Plus, Trash2 } from "lucide-react";
+import { useState } from "react";
+
+function formatDuration(minutes: number): string {
+  const h = Math.floor(minutes / 60);
+  const m = minutes % 60;
+  if (h === 0) return `${m}min`;
+  if (m === 0) return `${h}h`;
+  return `${h}h ${m}min`;
+}
+
+function formatAmount(minutes: number, rate?: number): string {
+  if (!rate) return "-";
+  return `${((minutes / 60) * rate).toFixed(2)} EUR`;
+}
+
+const ACTIVITIES = [
+  { value: "", label: "Keine Kategorie" },
+  { value: "research", label: "Recherche" },
+  { value: "drafting", label: "Entwurf" },
+  { value: "hearing", label: "Verhandlung" },
+  { value: "call", label: "Telefonat" },
+  { value: "review", label: "Prüfung" },
+  { value: "travel", label: "Reise" },
+  { value: "meeting", label: "Besprechung" },
+];
+
+export default function ZeiterfassungPage() {
+  const { id } = useParams<{ id: string }>();
+  const queryClient = useQueryClient();
+  const [showForm, setShowForm] = useState(false);
+  const [desc, setDesc] = useState("");
+  const [hours, setHours] = useState("");
+  const [minutes, setMinutes] = useState("");
+  const [date, setDate] = useState(format(new Date(), "yyyy-MM-dd"));
+  const [activity, setActivity] = useState("");
+  const [billable, setBillable] = useState(true);
+
+  const { data, isLoading } = useQuery({
+    queryKey: ["case-time-entries", id],
+    queryFn: () =>
+      api.get<{ time_entries: TimeEntry[] }>(`/cases/${id}/time-entries`),
+  });
+
+  const createMutation = useMutation({
+    mutationFn: (input: {
+      description: string;
+      duration_minutes: number;
+      date: string;
+      activity?: string;
+      billable: boolean;
+    }) => api.post<TimeEntry>(`/cases/${id}/time-entries`, input),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["case-time-entries", id] });
+      setShowForm(false);
+      setDesc("");
+      setHours("");
+      setMinutes("");
+      setActivity("");
+      setBillable(true);
+    },
+  });
+
+  const deleteMutation = useMutation({
+    mutationFn: (entryId: string) =>
+      api.delete(`/time-entries/${entryId}`),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["case-time-entries", id] });
+    },
+  });
+
+  function handleSubmit(e: React.FormEvent) {
+    e.preventDefault();
+    const totalMinutes = (parseInt(hours || "0") * 60) + parseInt(minutes || "0");
+    if (totalMinutes <= 0 || !desc.trim()) return;
+    createMutation.mutate({
+      description: desc.trim(),
+      duration_minutes: totalMinutes,
+      date,
+      activity: activity || undefined,
+      billable,
+    });
+  }
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center py-8">
+        <Loader2 className="h-5 w-5 animate-spin text-neutral-400" />
+      </div>
+    );
+  }
+
+  const entries = data?.time_entries ?? [];
+  const totalMinutes = entries.reduce((s, e) => s + e.duration_minutes, 0);
+  const billableMinutes = entries
+    .filter((e) => e.billable)
+    .reduce((s, e) => s + e.duration_minutes, 0);
+
+  return (
+    <div className="space-y-4">
+      {/* Summary bar */}
+      <div className="flex flex-wrap items-center justify-between gap-3">
+        <div className="flex gap-6 text-sm text-neutral-500">
+          <span>
+            Gesamt: <span className="font-medium text-neutral-900">{formatDuration(totalMinutes)}</span>
+          </span>
+          <span>
+            Abrechenbar: <span className="font-medium text-neutral-900">{formatDuration(billableMinutes)}</span>
+          </span>
+        </div>
+        <button
+          onClick={() => setShowForm(!showForm)}
+          className="inline-flex items-center gap-1.5 rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white transition-colors hover:bg-neutral-800"
+        >
+          <Plus className="h-3.5 w-3.5" />
+          Eintrag
+        </button>
+      </div>
+
+      {/* Quick add form */}
+      {showForm && (
+        <form
+          onSubmit={handleSubmit}
+          className="rounded-md border border-neutral-200 bg-neutral-50 p-4 space-y-3"
+        >
+          <div>
+            <label className="block text-xs font-medium text-neutral-600 mb-1">
+              Beschreibung
+            </label>
+            <input
+              type="text"
+              value={desc}
+              onChange={(e) => setDesc(e.target.value)}
+              placeholder="Was wurde getan?"
+              className="w-full rounded-md border border-neutral-300 px-3 py-1.5 text-sm focus:border-neutral-500 focus:outline-none"
+              required
+            />
+          </div>
+          <div className="flex flex-wrap gap-3">
+            <div className="flex-1 min-w-[120px]">
+              <label className="block text-xs font-medium text-neutral-600 mb-1">
+                Dauer
+              </label>
+              <div className="flex gap-2">
+                <div className="flex items-center gap-1">
+                  <input
+                    type="number"
+                    min="0"
+                    value={hours}
+                    onChange={(e) => setHours(e.target.value)}
+                    placeholder="0"
+                    className="w-16 rounded-md border border-neutral-300 px-2 py-1.5 text-sm focus:border-neutral-500 focus:outline-none"
+                  />
+                  <span className="text-xs text-neutral-500">h</span>
+                </div>
+                <div className="flex items-center gap-1">
+                  <input
+                    type="number"
+                    min="0"
+                    max="59"
+                    value={minutes}
+                    onChange={(e) => setMinutes(e.target.value)}
+                    placeholder="0"
+                    className="w-16 rounded-md border border-neutral-300 px-2 py-1.5 text-sm focus:border-neutral-500 focus:outline-none"
+                  />
+                  <span className="text-xs text-neutral-500">min</span>
+                </div>
+              </div>
+            </div>
+            <div className="flex-1 min-w-[120px]">
+              <label className="block text-xs font-medium text-neutral-600 mb-1">
+                Datum
+              </label>
+              <input
+                type="date"
+                value={date}
+                onChange={(e) => setDate(e.target.value)}
+                className="w-full rounded-md border border-neutral-300 px-3 py-1.5 text-sm focus:border-neutral-500 focus:outline-none"
+              />
+            </div>
+            <div className="flex-1 min-w-[120px]">
+              <label className="block text-xs font-medium text-neutral-600 mb-1">
+                Kategorie
+              </label>
+              <select
+                value={activity}
+                onChange={(e) => setActivity(e.target.value)}
+                className="w-full rounded-md border border-neutral-300 px-3 py-1.5 text-sm focus:border-neutral-500 focus:outline-none"
+              >
+                {ACTIVITIES.map((a) => (
+                  <option key={a.value} value={a.value}>
+                    {a.label}
+                  </option>
+                ))}
+              </select>
+            </div>
+          </div>
+          <div className="flex items-center justify-between">
+            <label className="flex items-center gap-2 text-sm text-neutral-600">
+              <input
+                type="checkbox"
+                checked={billable}
+                onChange={(e) => setBillable(e.target.checked)}
+                className="rounded border-neutral-300"
+              />
+              Abrechenbar
+            </label>
+            <div className="flex gap-2">
+              <button
+                type="button"
+                onClick={() => setShowForm(false)}
+                className="rounded-md px-3 py-1.5 text-sm text-neutral-600 transition-colors hover:bg-neutral-100"
+              >
+                Abbrechen
+              </button>
+              <button
+                type="submit"
+                disabled={createMutation.isPending}
+                className="rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white transition-colors hover:bg-neutral-800 disabled:opacity-50"
+              >
+                {createMutation.isPending ? "Speichern..." : "Speichern"}
+              </button>
+            </div>
+          </div>
+          {createMutation.isError && (
+            <p className="text-sm text-red-600">Fehler beim Speichern.</p>
+          )}
+        </form>
+      )}
+
+      {/* Entries list */}
+      {entries.length === 0 ? (
+        <div className="flex flex-col items-center py-8 text-center">
+          <div className="rounded-xl bg-neutral-100 p-3">
+            <Timer className="h-5 w-5 text-neutral-400" />
+          </div>
+          <p className="mt-2 text-sm text-neutral-500">
+            Keine Zeiteintraege vorhanden.
+          </p>
+        </div>
+      ) : (
+        <div className="space-y-2">
+          {entries.map((entry) => (
+            <div
+              key={entry.id}
+              className="flex items-center justify-between rounded-md border border-neutral-200 bg-white px-4 py-3"
+            >
+              <div className="min-w-0 flex-1">
+                <div className="flex items-center gap-2">
+                  <p className="text-sm font-medium text-neutral-900 truncate">
+                    {entry.description}
+                  </p>
+                  {entry.activity && (
+                    <span className="shrink-0 rounded-full bg-neutral-100 px-2 py-0.5 text-xs text-neutral-500">
+                      {ACTIVITIES.find((a) => a.value === entry.activity)?.label ?? entry.activity}
+                    </span>
+                  )}
+                  {!entry.billable && (
+                    <span className="shrink-0 rounded-full bg-neutral-100 px-2 py-0.5 text-xs text-neutral-400">
+                      nicht abrechenbar
+                    </span>
+                  )}
+                  {entry.billed && (
+                    <span className="shrink-0 rounded-full bg-emerald-50 px-2 py-0.5 text-xs text-emerald-700">
+                      abgerechnet
+                    </span>
+                  )}
+                </div>
+                <div className="mt-0.5 flex gap-4 text-xs text-neutral-500">
+                  <span>
+                    {format(new Date(entry.date), "d. MMM yyyy", { locale: de })}
+                  </span>
+                  {entry.hourly_rate && (
+                    <span>{formatAmount(entry.duration_minutes, entry.hourly_rate)}</span>
+                  )}
+                </div>
+              </div>
+              <div className="flex items-center gap-3 ml-4">
+                <span className="text-sm font-medium text-neutral-900 whitespace-nowrap">
+                  {formatDuration(entry.duration_minutes)}
+                </span>
+                {!entry.billed && (
+                  <button
+                    onClick={() => deleteMutation.mutate(entry.id)}
+                    className="rounded-md p-1 text-neutral-400 transition-colors hover:bg-red-50 hover:text-red-600"
+                    title="Loeschen"
+                  >
+                    <Trash2 className="h-3.5 w-3.5" />
+                  </button>
+                )}
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/app/(app)/einstellungen/abrechnung/page.tsx

@@ -0,0 +1,166 @@
+"use client";
+
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import { api } from "@/lib/api";
+import type { BillingRate } from "@/lib/types";
+import { format } from "date-fns";
+import { de } from "date-fns/locale";
+import { Loader2, Plus } from "lucide-react";
+import { useState } from "react";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+
+export default function BillingRatesPage() {
+  const queryClient = useQueryClient();
+  const [showForm, setShowForm] = useState(false);
+  const [rate, setRate] = useState("");
+  const [validFrom, setValidFrom] = useState(format(new Date(), "yyyy-MM-dd"));
+
+  const { data, isLoading } = useQuery({
+    queryKey: ["billing-rates"],
+    queryFn: () =>
+      api.get<{ billing_rates: BillingRate[] }>("/billing-rates"),
+  });
+
+  const upsertMutation = useMutation({
+    mutationFn: (input: { rate: number; valid_from: string; currency: string }) =>
+      api.put<BillingRate>("/billing-rates", input),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["billing-rates"] });
+      setShowForm(false);
+      setRate("");
+    },
+  });
+
+  function handleSubmit(e: React.FormEvent) {
+    e.preventDefault();
+    const rateNum = parseFloat(rate);
+    if (isNaN(rateNum) || rateNum < 0) return;
+    upsertMutation.mutate({
+      rate: rateNum,
+      valid_from: validFrom,
+      currency: "EUR",
+    });
+  }
+
+  const rates = data?.billing_rates ?? [];
+
+  return (
+    <div className="animate-fade-in">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Einstellungen", href: "/einstellungen" },
+          { label: "Stundensaetze" },
+        ]}
+      />
+
+      <div className="mt-4 flex items-center justify-between">
+        <h1 className="text-lg font-semibold text-neutral-900">
+          Stundensaetze
+        </h1>
+        <button
+          onClick={() => setShowForm(!showForm)}
+          className="inline-flex items-center gap-1.5 rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white transition-colors hover:bg-neutral-800"
+        >
+          <Plus className="h-3.5 w-3.5" />
+          Neuer Satz
+        </button>
+      </div>
+
+      {showForm && (
+        <form
+          onSubmit={handleSubmit}
+          className="mt-4 rounded-md border border-neutral-200 bg-neutral-50 p-4 space-y-3"
+        >
+          <div className="flex flex-wrap gap-3">
+            <div className="flex-1 min-w-[150px]">
+              <label className="block text-xs font-medium text-neutral-600 mb-1">
+                Stundensatz (EUR)
+              </label>
+              <input
+                type="number"
+                min="0"
+                step="0.01"
+                value={rate}
+                onChange={(e) => setRate(e.target.value)}
+                placeholder="z.B. 350.00"
+                className="w-full rounded-md border border-neutral-300 px-3 py-1.5 text-sm focus:border-neutral-500 focus:outline-none"
+                required
+              />
+            </div>
+            <div className="flex-1 min-w-[150px]">
+              <label className="block text-xs font-medium text-neutral-600 mb-1">
+                Gueltig ab
+              </label>
+              <input
+                type="date"
+                value={validFrom}
+                onChange={(e) => setValidFrom(e.target.value)}
+                className="w-full rounded-md border border-neutral-300 px-3 py-1.5 text-sm focus:border-neutral-500 focus:outline-none"
+                required
+              />
+            </div>
+          </div>
+          <div className="flex justify-end gap-2">
+            <button
+              type="button"
+              onClick={() => setShowForm(false)}
+              className="rounded-md px-3 py-1.5 text-sm text-neutral-600 hover:bg-neutral-100"
+            >
+              Abbrechen
+            </button>
+            <button
+              type="submit"
+              disabled={upsertMutation.isPending}
+              className="rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white hover:bg-neutral-800 disabled:opacity-50"
+            >
+              Speichern
+            </button>
+          </div>
+        </form>
+      )}
+
+      {isLoading ? (
+        <div className="flex items-center justify-center py-8">
+          <Loader2 className="h-5 w-5 animate-spin text-neutral-400" />
+        </div>
+      ) : rates.length === 0 ? (
+        <div className="mt-8 text-center">
+          <p className="text-sm text-neutral-500">
+            Noch keine Stundensaetze definiert.
+          </p>
+        </div>
+      ) : (
+        <div className="mt-4 space-y-2">
+          {rates.map((r) => (
+            <div
+              key={r.id}
+              className="flex items-center justify-between rounded-md border border-neutral-200 bg-white px-4 py-3"
+            >
+              <div>
+                <p className="text-sm font-medium text-neutral-900">
+                  {r.rate.toFixed(2)} {r.currency}/h
+                </p>
+                <p className="mt-0.5 text-xs text-neutral-500">
+                  {r.user_id ? `Benutzer: ${r.user_id.slice(0, 8)}...` : "Standard (alle Benutzer)"}
+                </p>
+              </div>
+              <div className="text-right text-xs text-neutral-500">
+                <p>
+                  Ab{" "}
+                  {format(new Date(r.valid_from), "d. MMM yyyy", { locale: de })}
+                </p>
+                {r.valid_to && (
+                  <p>
+                    Bis{" "}
+                    {format(new Date(r.valid_to), "d. MMM yyyy", { locale: de })}
+                  </p>
+                )}
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/app/(app)/layout.tsx

@@ -1,5 +1,6 @@
 import { Sidebar } from "@/components/layout/Sidebar";
 import { Header } from "@/components/layout/Header";
+import { DemoBanner } from "@/components/layout/DemoBanner";
 
 export const dynamic = "force-dynamic";
 
@@ -12,6 +13,7 @@ export default function AppLayout({
     <div className="flex h-screen overflow-hidden bg-neutral-50">
       <Sidebar />
       <div className="flex flex-1 flex-col overflow-hidden">
+        <DemoBanner />
         <Header />
         <main className="flex-1 overflow-y-auto p-4 sm:p-6">{children}</main>
       </div>

frontend/src/app/(app)/vorlagen/[id]/page.tsx

@@ -0,0 +1,174 @@
+"use client";
+
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
+import { useParams, useRouter } from "next/navigation";
+import { api } from "@/lib/api";
+import type { DocumentTemplate } from "@/lib/types";
+import { TEMPLATE_CATEGORY_LABELS } from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import { TemplateEditor } from "@/components/templates/TemplateEditor";
+import Link from "next/link";
+import {
+  Loader2,
+  Lock,
+  Trash2,
+  FileDown,
+  ArrowRight,
+} from "lucide-react";
+import { toast } from "sonner";
+import { useState } from "react";
+
+export default function TemplateDetailPage() {
+  const { id } = useParams<{ id: string }>();
+  const router = useRouter();
+  const queryClient = useQueryClient();
+  const [isEditing, setIsEditing] = useState(false);
+
+  const { data: template, isLoading } = useQuery({
+    queryKey: ["template", id],
+    queryFn: () => api.get<DocumentTemplate>(`/templates/${id}`),
+  });
+
+  const deleteMutation = useMutation({
+    mutationFn: () => api.delete(`/templates/${id}`),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["templates"] });
+      toast.success("Vorlage gelöscht");
+      router.push("/vorlagen");
+    },
+    onError: () => toast.error("Fehler beim Löschen"),
+  });
+
+  const updateMutation = useMutation({
+    mutationFn: (data: Partial<DocumentTemplate>) =>
+      api.put<DocumentTemplate>(`/templates/${id}`, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["template", id] });
+      queryClient.invalidateQueries({ queryKey: ["templates"] });
+      toast.success("Vorlage gespeichert");
+      setIsEditing(false);
+    },
+    onError: () => toast.error("Fehler beim Speichern"),
+  });
+
+  if (isLoading) {
+    return (
+      <div className="flex items-center justify-center py-12">
+        <Loader2 className="h-5 w-5 animate-spin text-neutral-400" />
+      </div>
+    );
+  }
+
+  if (!template) {
+    return (
+      <div className="py-12 text-center text-sm text-neutral-500">
+        Vorlage nicht gefunden
+      </div>
+    );
+  }
+
+  return (
+    <div className="animate-fade-in space-y-4">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Vorlagen", href: "/vorlagen" },
+          { label: template.name },
+        ]}
+      />
+
+      <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
+        <div>
+          <div className="flex items-center gap-2">
+            <h1 className="text-lg font-semibold text-neutral-900">
+              {template.name}
+            </h1>
+            {template.is_system && (
+              <Lock className="h-4 w-4 text-neutral-400" aria-label="Systemvorlage" />
+            )}
+          </div>
+          <div className="mt-1 flex items-center gap-2">
+            <span className="rounded-full bg-neutral-100 px-2 py-0.5 text-xs text-neutral-600">
+              {TEMPLATE_CATEGORY_LABELS[template.category] ?? template.category}
+            </span>
+            {template.description && (
+              <span className="text-xs text-neutral-500">
+                {template.description}
+              </span>
+            )}
+          </div>
+        </div>
+
+        <div className="flex items-center gap-2">
+          <Link
+            href={`/vorlagen/${id}/render`}
+            className="flex items-center gap-1.5 rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white transition-colors hover:bg-neutral-800"
+          >
+            <FileDown className="h-3.5 w-3.5" />
+            Dokument erstellen
+            <ArrowRight className="h-3.5 w-3.5" />
+          </Link>
+          {!template.is_system && (
+            <>
+              <button
+                onClick={() => setIsEditing(!isEditing)}
+                className="rounded-md border border-neutral-200 bg-white px-3 py-1.5 text-sm text-neutral-700 transition-colors hover:bg-neutral-50"
+              >
+                {isEditing ? "Abbrechen" : "Bearbeiten"}
+              </button>
+              <button
+                onClick={() => {
+                  if (confirm("Vorlage wirklich löschen?")) {
+                    deleteMutation.mutate();
+                  }
+                }}
+                className="rounded-md border border-red-200 bg-white p-1.5 text-red-600 transition-colors hover:bg-red-50"
+              >
+                <Trash2 className="h-4 w-4" />
+              </button>
+            </>
+          )}
+        </div>
+      </div>
+
+      {isEditing ? (
+        <TemplateEditor
+          template={template}
+          onSave={(data) => updateMutation.mutate(data)}
+          isSaving={updateMutation.isPending}
+        />
+      ) : (
+        <div className="space-y-4">
+          {/* Variables */}
+          {template.variables && template.variables.length > 0 && (
+            <div className="rounded-lg border border-neutral-200 bg-white p-4">
+              <h3 className="mb-2 text-sm font-medium text-neutral-700">
+                Variablen
+              </h3>
+              <div className="flex flex-wrap gap-1.5">
+                {template.variables.map((v: string) => (
+                  <code
+                    key={v}
+                    className="rounded bg-neutral-100 px-1.5 py-0.5 text-xs text-neutral-600"
+                  >
+                    {`{{${v}}}`}
+                  </code>
+                ))}
+              </div>
+            </div>
+          )}
+
+          {/* Content preview */}
+          <div className="rounded-lg border border-neutral-200 bg-white p-6">
+            <h3 className="mb-3 text-sm font-medium text-neutral-700">
+              Vorschau
+            </h3>
+            <div className="prose prose-sm prose-neutral max-w-none whitespace-pre-wrap font-mono text-xs leading-relaxed text-neutral-700">
+              {template.content}
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/app/(app)/vorlagen/[id]/render/page.tsx

@@ -0,0 +1,177 @@
+"use client";
+
+import { useQuery, useMutation } from "@tanstack/react-query";
+import { useParams } from "next/navigation";
+import { api } from "@/lib/api";
+import type { DocumentTemplate, Case, RenderResponse } from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import {
+  Loader2,
+  FileDown,
+  Copy,
+  Check,
+} from "lucide-react";
+import { useState } from "react";
+import { toast } from "sonner";
+
+export default function RenderTemplatePage() {
+  const { id } = useParams<{ id: string }>();
+  const [selectedCaseId, setSelectedCaseId] = useState("");
+  const [rendered, setRendered] = useState<RenderResponse | null>(null);
+  const [copied, setCopied] = useState(false);
+
+  const { data: template, isLoading: templateLoading } = useQuery({
+    queryKey: ["template", id],
+    queryFn: () => api.get<DocumentTemplate>(`/templates/${id}`),
+  });
+
+  const { data: casesData, isLoading: casesLoading } = useQuery({
+    queryKey: ["cases"],
+    queryFn: () =>
+      api.get<{ data: Case[]; total: number }>("/cases?limit=100"),
+  });
+
+  const cases = casesData?.data ?? [];
+
+  const renderMutation = useMutation({
+    mutationFn: () =>
+      api.post<RenderResponse>(
+        `/templates/${id}/render${selectedCaseId ? `?case_id=${selectedCaseId}` : ""}`,
+      ),
+    onSuccess: (data) => setRendered(data),
+    onError: () => toast.error("Fehler beim Erstellen"),
+  });
+
+  const handleCopy = async () => {
+    if (!rendered) return;
+    await navigator.clipboard.writeText(rendered.content);
+    setCopied(true);
+    toast.success("In Zwischenablage kopiert");
+    setTimeout(() => setCopied(false), 2000);
+  };
+
+  const handleDownload = () => {
+    if (!rendered) return;
+    const blob = new Blob([rendered.content], { type: "text/markdown" });
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement("a");
+    a.href = url;
+    a.download = `${rendered.name.replace(/\s+/g, "_")}.md`;
+    a.click();
+    URL.revokeObjectURL(url);
+    toast.success("Dokument heruntergeladen");
+  };
+
+  if (templateLoading) {
+    return (
+      <div className="flex items-center justify-center py-12">
+        <Loader2 className="h-5 w-5 animate-spin text-neutral-400" />
+      </div>
+    );
+  }
+
+  if (!template) {
+    return (
+      <div className="py-12 text-center text-sm text-neutral-500">
+        Vorlage nicht gefunden
+      </div>
+    );
+  }
+
+  return (
+    <div className="animate-fade-in space-y-4">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Vorlagen", href: "/vorlagen" },
+          { label: template.name, href: `/vorlagen/${id}` },
+          { label: "Dokument erstellen" },
+        ]}
+      />
+
+      <h1 className="text-lg font-semibold text-neutral-900">
+        Dokument erstellen
+      </h1>
+      <p className="text-sm text-neutral-500">
+        Vorlage &ldquo;{template.name}&rdquo; mit Falldaten befüllen
+      </p>
+
+      {/* Step 1: Select case */}
+      <div className="rounded-lg border border-neutral-200 bg-white p-4">
+        <h3 className="mb-3 text-sm font-medium text-neutral-700">
+          1. Akte auswählen
+        </h3>
+        {casesLoading ? (
+          <Loader2 className="h-4 w-4 animate-spin text-neutral-400" />
+        ) : (
+          <select
+            value={selectedCaseId}
+            onChange={(e) => {
+              setSelectedCaseId(e.target.value);
+              setRendered(null);
+            }}
+            className="w-full rounded-md border border-neutral-200 px-3 py-2 text-sm text-neutral-700 focus:border-neutral-400 focus:outline-none"
+          >
+            <option value="">Ohne Akte (nur Datumsvariablen)</option>
+            {cases.map((c) => (
+              <option key={c.id} value={c.id}>
+                {c.case_number} — {c.title}
+              </option>
+            ))}
+          </select>
+        )}
+      </div>
+
+      {/* Step 2: Render */}
+      <div className="rounded-lg border border-neutral-200 bg-white p-4">
+        <div className="flex items-center justify-between">
+          <h3 className="text-sm font-medium text-neutral-700">
+            2. Vorschau erstellen
+          </h3>
+          <button
+            onClick={() => renderMutation.mutate()}
+            disabled={renderMutation.isPending}
+            className="flex items-center gap-1.5 rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white transition-colors hover:bg-neutral-800 disabled:opacity-50"
+          >
+            {renderMutation.isPending ? (
+              <Loader2 className="h-3.5 w-3.5 animate-spin" />
+            ) : (
+              <FileDown className="h-3.5 w-3.5" />
+            )}
+            Vorschau
+          </button>
+        </div>
+
+        {rendered && (
+          <div className="mt-4">
+            <div className="mb-2 flex items-center justify-end gap-2">
+              <button
+                onClick={handleCopy}
+                className="flex items-center gap-1 rounded-md border border-neutral-200 px-2.5 py-1 text-xs text-neutral-600 transition-colors hover:bg-neutral-50"
+              >
+                {copied ? (
+                  <Check className="h-3 w-3" />
+                ) : (
+                  <Copy className="h-3 w-3" />
+                )}
+                {copied ? "Kopiert" : "Kopieren"}
+              </button>
+              <button
+                onClick={handleDownload}
+                className="flex items-center gap-1 rounded-md border border-neutral-200 px-2.5 py-1 text-xs text-neutral-600 transition-colors hover:bg-neutral-50"
+              >
+                <FileDown className="h-3 w-3" />
+                Herunterladen
+              </button>
+            </div>
+            <div className="rounded-lg border border-neutral-200 bg-neutral-50 p-6">
+              <div className="whitespace-pre-wrap font-mono text-xs leading-relaxed text-neutral-700">
+                {rendered.content}
+              </div>
+            </div>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

frontend/src/app/(app)/vorlagen/neu/page.tsx

@@ -0,0 +1,46 @@
+"use client";
+
+import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { useRouter } from "next/navigation";
+import { api } from "@/lib/api";
+import type { DocumentTemplate } from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import { TemplateEditor } from "@/components/templates/TemplateEditor";
+import { toast } from "sonner";
+
+export default function NeueVorlagePage() {
+  const router = useRouter();
+  const queryClient = useQueryClient();
+
+  const createMutation = useMutation({
+    mutationFn: (data: Partial<DocumentTemplate>) =>
+      api.post<DocumentTemplate>("/templates", data),
+    onSuccess: (result) => {
+      queryClient.invalidateQueries({ queryKey: ["templates"] });
+      toast.success("Vorlage erstellt");
+      router.push(`/vorlagen/${result.id}`);
+    },
+    onError: () => toast.error("Fehler beim Erstellen"),
+  });
+
+  return (
+    <div className="animate-fade-in space-y-4">
+      <Breadcrumb
+        items={[
+          { label: "Dashboard", href: "/dashboard" },
+          { label: "Vorlagen", href: "/vorlagen" },
+          { label: "Neue Vorlage" },
+        ]}
+      />
+
+      <h1 className="text-lg font-semibold text-neutral-900">
+        Neue Vorlage erstellen
+      </h1>
+
+      <TemplateEditor
+        onSave={(data) => createMutation.mutate(data)}
+        isSaving={createMutation.isPending}
+      />
+    </div>
+  );
+}

frontend/src/app/(app)/vorlagen/page.tsx

@@ -0,0 +1,121 @@
+"use client";
+
+import { useQuery } from "@tanstack/react-query";
+import { api } from "@/lib/api";
+import type { DocumentTemplate } from "@/lib/types";
+import { TEMPLATE_CATEGORY_LABELS } from "@/lib/types";
+import { Breadcrumb } from "@/components/layout/Breadcrumb";
+import Link from "next/link";
+import { FileText, Plus, Loader2, Lock } from "lucide-react";
+import { useState } from "react";
+
+const CATEGORIES = ["", "schriftsatz", "vertrag", "korrespondenz", "intern"];
+
+export default function VorlagenPage() {
+  const [category, setCategory] = useState("");
+
+  const { data, isLoading } = useQuery({
+    queryKey: ["templates", category],
+    queryFn: () =>
+      api.get<{ data: DocumentTemplate[]; total: number }>(
+        `/templates${category ? `?category=${category}` : ""}`,
+      ),
+  });
+
+  const templates = data?.data ?? [];
+
+  return (
+    <div className="animate-fade-in space-y-4">
+      <div>
+        <Breadcrumb
+          items={[
+            { label: "Dashboard", href: "/dashboard" },
+            { label: "Vorlagen" },
+          ]}
+        />
+        <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
+          <div>
+            <h1 className="text-lg font-semibold text-neutral-900">
+              Vorlagen
+            </h1>
+            <p className="mt-0.5 text-sm text-neutral-500">
+              Dokumentvorlagen mit automatischer Befüllung
+            </p>
+          </div>
+          <Link
+            href="/vorlagen/neu"
+            className="flex items-center gap-1.5 rounded-md bg-neutral-900 px-3 py-1.5 text-sm font-medium text-white transition-colors hover:bg-neutral-800"
+          >
+            <Plus className="h-3.5 w-3.5" />
+            Neue Vorlage
+          </Link>
+        </div>
+      </div>
+
+      {/* Category filter */}
+      <div className="flex gap-1.5 overflow-x-auto">
+        {CATEGORIES.map((cat) => (
+          <button
+            key={cat}
+            onClick={() => setCategory(cat)}
+            className={`whitespace-nowrap rounded-md px-3 py-1.5 text-sm transition-colors ${
+              category === cat
+                ? "bg-neutral-900 font-medium text-white"
+                : "bg-white text-neutral-600 ring-1 ring-neutral-200 hover:bg-neutral-50"
+            }`}
+          >
+            {cat === "" ? "Alle" : TEMPLATE_CATEGORY_LABELS[cat] ?? cat}
+          </button>
+        ))}
+      </div>
+
+      {isLoading ? (
+        <div className="flex items-center justify-center py-12">
+          <Loader2 className="h-5 w-5 animate-spin text-neutral-400" />
+        </div>
+      ) : templates.length === 0 ? (
+        <div className="flex flex-col items-center justify-center rounded-lg border border-dashed border-neutral-300 py-12 text-center">
+          <FileText className="mb-2 h-8 w-8 text-neutral-300" />
+          <p className="text-sm text-neutral-500">Keine Vorlagen gefunden</p>
+        </div>
+      ) : (
+        <div className="grid gap-3 sm:grid-cols-2 lg:grid-cols-3">
+          {templates.map((t) => (
+            <Link
+              key={t.id}
+              href={`/vorlagen/${t.id}`}
+              className="group rounded-lg border border-neutral-200 bg-white p-4 transition-colors hover:border-neutral-300 hover:shadow-sm"
+            >
+              <div className="flex items-start justify-between">
+                <div className="flex items-center gap-2">
+                  <FileText className="h-4 w-4 text-neutral-400" />
+                  <h3 className="text-sm font-medium text-neutral-900 group-hover:text-neutral-700">
+                    {t.name}
+                  </h3>
+                </div>
+                {t.is_system && (
+                  <Lock className="h-3.5 w-3.5 text-neutral-300" aria-label="Systemvorlage" />
+                )}
+              </div>
+              {t.description && (
+                <p className="mt-1.5 text-xs text-neutral-500 line-clamp-2">
+                  {t.description}
+                </p>
+              )}
+              <div className="mt-3 flex items-center gap-2">
+                <span className="rounded-full bg-neutral-100 px-2 py-0.5 text-xs text-neutral-600">
+                  {TEMPLATE_CATEGORY_LABELS[t.category] ?? t.category}
+                </span>
+                {t.is_system && (
+                  <span className="rounded-full bg-blue-50 px-2 py-0.5 text-xs text-blue-600">
+                    System
+                  </span>
+                )}
+              </div>
+            </Link>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/app/(auth)/register/page.tsx

@@ -5,12 +5,22 @@ import { api } from "@/lib/api";
 import { useRouter } from "next/navigation";
 import { useState } from "react";
 
+interface AutoAssignResponse {
+  assigned: boolean;
+  tenant_id?: string;
+  name?: string;
+  slug?: string;
+  role?: string;
+  settings?: Record<string, unknown>;
+}
+
 export default function RegisterPage() {
   const [email, setEmail] = useState("");
   const [password, setPassword] = useState("");
   const [firmName, setFirmName] = useState("");
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
+  const [showFirmName, setShowFirmName] = useState(true);
   const router = useRouter();
   const supabase = createClient();
 
@@ -34,8 +44,30 @@ export default function RegisterPage() {
       return;
     }
 
-    // 2. Create tenant via backend (the backend adds the user as owner)
     if (data.session) {
+      // 2. Check if email domain matches an existing tenant for auto-assignment
+      try {
+        const result = await api.post<AutoAssignResponse>("/tenants/auto-assign", { email });
+        if (result.assigned && result.tenant_id) {
+          // Auto-assigned — store tenant and go to dashboard
+          localStorage.setItem("kanzlai_tenant_id", result.tenant_id);
+          router.push("/");
+          router.refresh();
+          return;
+        }
+      } catch {
+        // Auto-assign failed — fall through to manual tenant creation
+      }
+
+      // 3. No auto-assignment — create tenant manually
+      if (!firmName) {
+        // Show firm name field if not yet visible
+        setShowFirmName(true);
+        setError("Bitte geben Sie einen Kanzleinamen ein");
+        setLoading(false);
+        return;
+      }
+
       try {
         await api.post("/tenants", { name: firmName });
       } catch (err: unknown) {
@@ -68,23 +100,27 @@ export default function RegisterPage() {
         </div>
 
         <form onSubmit={handleRegister} className="space-y-4">
-          <div>
-            <label
-              htmlFor="firm"
-              className="block text-sm font-medium text-neutral-700"
-            >
-              Kanzleiname
-            </label>
-            <input
-              id="firm"
-              type="text"
-              value={firmName}
-              onChange={(e) => setFirmName(e.target.value)}
-              required
-              className="mt-1 block w-full rounded-md border border-neutral-300 px-3 py-2 text-sm placeholder-neutral-400 focus:border-neutral-900 focus:outline-none focus:ring-1 focus:ring-neutral-900"
-              placeholder="Muster & Partner Rechtsanwaelte"
-            />
-          </div>
+          {showFirmName && (
+            <div>
+              <label
+                htmlFor="firm"
+                className="block text-sm font-medium text-neutral-700"
+              >
+                Kanzleiname
+              </label>
+              <input
+                id="firm"
+                type="text"
+                value={firmName}
+                onChange={(e) => setFirmName(e.target.value)}
+                className="mt-1 block w-full rounded-md border border-neutral-300 px-3 py-2 text-sm placeholder-neutral-400 focus:border-neutral-900 focus:outline-none focus:ring-1 focus:ring-neutral-900"
+                placeholder="Muster & Partner Rechtsanwaelte"
+              />
+              <p className="mt-1 text-xs text-neutral-400">
+                Leer lassen, falls Sie zu einer bestehenden Kanzlei eingeladen wurden
+              </p>
+            </div>
+          )}
 
           <div>
             <label

frontend/src/components/ai/CaseStrategy.tsx

@@ -0,0 +1,226 @@
+"use client";
+
+import { useMutation } from "@tanstack/react-query";
+import { api } from "@/lib/api";
+import type { StrategyRecommendation } from "@/lib/types";
+import {
+  Loader2,
+  Brain,
+  AlertTriangle,
+  ArrowRight,
+  Shield,
+  Calendar,
+  RefreshCw,
+} from "lucide-react";
+
+interface CaseStrategyProps {
+  caseId: string;
+}
+
+const PRIORITY_STYLES = {
+  high: "bg-red-50 text-red-700 border-red-200",
+  medium: "bg-amber-50 text-amber-700 border-amber-200",
+  low: "bg-emerald-50 text-emerald-700 border-emerald-200",
+} as const;
+
+const IMPORTANCE_STYLES = {
+  critical: "border-l-red-500",
+  important: "border-l-amber-500",
+  routine: "border-l-neutral-300",
+} as const;
+
+export function CaseStrategy({ caseId }: CaseStrategyProps) {
+  const mutation = useMutation({
+    mutationFn: () =>
+      api.post<StrategyRecommendation>("/ai/case-strategy", {
+        case_id: caseId,
+      }),
+  });
+
+  if (!mutation.data && !mutation.isPending && !mutation.isError) {
+    return (
+      <div className="flex flex-col items-center gap-3 py-8 text-center">
+        <div className="rounded-xl bg-neutral-100 p-3">
+          <Brain className="h-6 w-6 text-neutral-400" />
+        </div>
+        <div>
+          <p className="text-sm font-medium text-neutral-900">
+            KI-Strategieanalyse
+          </p>
+          <p className="mt-1 text-sm text-neutral-500">
+            Claude analysiert die Akte und gibt strategische Empfehlungen.
+          </p>
+        </div>
+        <button
+          onClick={() => mutation.mutate()}
+          className="inline-flex items-center gap-2 rounded-md bg-neutral-900 px-4 py-2 text-sm font-medium text-white transition-colors hover:bg-neutral-800"
+        >
+          <Brain className="h-4 w-4" />
+          Strategie analysieren
+        </button>
+      </div>
+    );
+  }
+
+  if (mutation.isPending) {
+    return (
+      <div className="flex flex-col items-center gap-3 py-12 text-center">
+        <Loader2 className="h-6 w-6 animate-spin text-neutral-400" />
+        <p className="text-sm text-neutral-500">
+          Claude analysiert die Akte...
+        </p>
+        <p className="text-xs text-neutral-400">
+          Dies kann bis zu 30 Sekunden dauern.
+        </p>
+      </div>
+    );
+  }
+
+  if (mutation.isError) {
+    return (
+      <div className="flex flex-col items-center gap-3 py-8 text-center">
+        <div className="rounded-xl bg-red-50 p-3">
+          <AlertTriangle className="h-6 w-6 text-red-500" />
+        </div>
+        <p className="text-sm text-neutral-900">Analyse fehlgeschlagen</p>
+        <button
+          onClick={() => mutation.mutate()}
+          className="inline-flex items-center gap-1 text-sm text-neutral-500 transition-colors hover:text-neutral-700"
+        >
+          <RefreshCw className="h-3.5 w-3.5" />
+          Erneut versuchen
+        </button>
+      </div>
+    );
+  }
+
+  const data = mutation.data!;
+
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center justify-between">
+        <h3 className="text-sm font-semibold text-neutral-900">
+          KI-Strategieanalyse
+        </h3>
+        <button
+          onClick={() => mutation.mutate()}
+          className="inline-flex items-center gap-1 rounded-md border border-neutral-200 px-2.5 py-1.5 text-xs font-medium text-neutral-600 transition-colors hover:bg-neutral-50"
+        >
+          <RefreshCw className="h-3.5 w-3.5" />
+          Aktualisieren
+        </button>
+      </div>
+
+      {/* Summary */}
+      <div className="rounded-md border border-blue-100 bg-blue-50 px-4 py-3 text-sm text-blue-800">
+        {data.summary}
+      </div>
+
+      {/* Next Steps */}
+      {data.next_steps?.length > 0 && (
+        <div>
+          <h4 className="mb-2 flex items-center gap-1.5 text-xs font-semibold uppercase tracking-wide text-neutral-500">
+            <ArrowRight className="h-3.5 w-3.5" />
+            Naechste Schritte
+          </h4>
+          <div className="space-y-2">
+            {data.next_steps.map((step, i) => (
+              <div
+                key={i}
+                className="rounded-md border border-neutral-200 bg-white px-4 py-3"
+              >
+                <div className="flex items-start gap-3">
+                  <span
+                    className={`mt-0.5 inline-block shrink-0 rounded-full border px-2 py-0.5 text-xs font-medium ${PRIORITY_STYLES[step.priority]}`}
+                  >
+                    {step.priority === "high"
+                      ? "Hoch"
+                      : step.priority === "medium"
+                        ? "Mittel"
+                        : "Niedrig"}
+                  </span>
+                  <div className="min-w-0">
+                    <p className="text-sm font-medium text-neutral-900">
+                      {step.action}
+                    </p>
+                    <p className="mt-1 text-sm text-neutral-500">
+                      {step.reasoning}
+                    </p>
+                    {step.deadline && (
+                      <p className="mt-1 text-xs text-neutral-400">
+                        Frist: {step.deadline}
+                      </p>
+                    )}
+                  </div>
+                </div>
+              </div>
+            ))}
+          </div>
+        </div>
+      )}
+
+      {/* Risk Assessment */}
+      {data.risk_assessment?.length > 0 && (
+        <div>
+          <h4 className="mb-2 flex items-center gap-1.5 text-xs font-semibold uppercase tracking-wide text-neutral-500">
+            <Shield className="h-3.5 w-3.5" />
+            Risikobewertung
+          </h4>
+          <div className="space-y-2">
+            {data.risk_assessment.map((risk, i) => (
+              <div
+                key={i}
+                className="rounded-md border border-neutral-200 bg-white px-4 py-3"
+              >
+                <div className="flex items-start gap-3">
+                  <span
+                    className={`mt-0.5 inline-block shrink-0 rounded-full border px-2 py-0.5 text-xs font-medium ${PRIORITY_STYLES[risk.level]}`}
+                  >
+                    {risk.level === "high"
+                      ? "Hoch"
+                      : risk.level === "medium"
+                        ? "Mittel"
+                        : "Niedrig"}
+                  </span>
+                  <div className="min-w-0">
+                    <p className="text-sm font-medium text-neutral-900">
+                      {risk.risk}
+                    </p>
+                    <p className="mt-1 text-sm text-neutral-500">
+                      Massnahme: {risk.mitigation}
+                    </p>
+                  </div>
+                </div>
+              </div>
+            ))}
+          </div>
+        </div>
+      )}
+
+      {/* Timeline */}
+      {data.timeline?.length > 0 && (
+        <div>
+          <h4 className="mb-2 flex items-center gap-1.5 text-xs font-semibold uppercase tracking-wide text-neutral-500">
+            <Calendar className="h-3.5 w-3.5" />
+            Zeitplan
+          </h4>
+          <div className="space-y-1">
+            {data.timeline.map((item, i) => (
+              <div
+                key={i}
+                className={`border-l-2 py-2 pl-4 ${IMPORTANCE_STYLES[item.importance]}`}
+              >
+                <div className="flex items-baseline gap-2">
+                  <span className="shrink-0 text-xs font-medium text-neutral-400">
+                    {item.date}
+                  </span>
+                  <span className="text-sm text-neutral-900">{item.event}</span>
+                </div>
+              </div>
+            ))}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/components/ai/DocumentDrafter.tsx

@@ -0,0 +1,198 @@
+"use client";
+
+import { useState } from "react";
+import { useMutation } from "@tanstack/react-query";
+import { api } from "@/lib/api";
+import type { DocumentDraft, DraftDocumentRequest } from "@/lib/types";
+import { FileText, Loader2, Copy, Check, Download } from "lucide-react";
+
+const TEMPLATES = {
+  klageschrift: "Klageschrift",
+  klageerwiderung: "Klageerwiderung",
+  abmahnung: "Abmahnung",
+  schriftsatz: "Schriftsatz",
+  berufung: "Berufungsschrift",
+  antrag: "Antrag",
+  stellungnahme: "Stellungnahme",
+  gutachten: "Gutachten",
+  vertrag: "Vertrag",
+  vollmacht: "Vollmacht",
+  upc_claim: "UPC Statement of Claim",
+  upc_defence: "UPC Statement of Defence",
+  upc_counterclaim: "UPC Counterclaim for Revocation",
+  upc_injunction: "UPC Provisional Measures",
+} as const;
+
+const LANGUAGES = [
+  { value: "de", label: "Deutsch" },
+  { value: "en", label: "English" },
+  { value: "fr", label: "Francais" },
+] as const;
+
+const inputClass =
+  "w-full rounded-md border border-neutral-200 bg-white px-3 py-2 text-sm text-neutral-900 outline-none transition-colors focus:border-neutral-400 focus:ring-1 focus:ring-neutral-400";
+
+interface DocumentDrafterProps {
+  caseId: string;
+}
+
+export function DocumentDrafter({ caseId }: DocumentDrafterProps) {
+  const [templateType, setTemplateType] = useState("");
+  const [instructions, setInstructions] = useState("");
+  const [language, setLanguage] = useState("de");
+  const [copied, setCopied] = useState(false);
+
+  const mutation = useMutation({
+    mutationFn: (req: DraftDocumentRequest) =>
+      api.post<DocumentDraft>("/ai/draft-document", req),
+  });
+
+  function handleSubmit(e: React.FormEvent) {
+    e.preventDefault();
+    if (!templateType) return;
+    mutation.mutate({
+      case_id: caseId,
+      template_type: templateType,
+      instructions,
+      language,
+    });
+  }
+
+  function handleCopy() {
+    if (mutation.data?.content) {
+      navigator.clipboard.writeText(mutation.data.content);
+      setCopied(true);
+      setTimeout(() => setCopied(false), 2000);
+    }
+  }
+
+  function handleDownload() {
+    if (!mutation.data?.content) return;
+    const blob = new Blob([mutation.data.content], { type: "text/plain;charset=utf-8" });
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement("a");
+    a.href = url;
+    a.download = `${templateType}_entwurf.txt`;
+    a.click();
+    URL.revokeObjectURL(url);
+  }
+
+  return (
+    <div className="space-y-4">
+      <form onSubmit={handleSubmit} className="space-y-3">
+        <div>
+          <label className="mb-1 block text-xs font-medium text-neutral-500">
+            Dokumenttyp
+          </label>
+          <select
+            value={templateType}
+            onChange={(e) => setTemplateType(e.target.value)}
+            className={inputClass}
+            disabled={mutation.isPending}
+          >
+            <option value="">Dokumenttyp waehlen...</option>
+            {Object.entries(TEMPLATES).map(([key, label]) => (
+              <option key={key} value={key}>
+                {label}
+              </option>
+            ))}
+          </select>
+        </div>
+
+        <div>
+          <label className="mb-1 block text-xs font-medium text-neutral-500">
+            Sprache
+          </label>
+          <select
+            value={language}
+            onChange={(e) => setLanguage(e.target.value)}
+            className={inputClass}
+            disabled={mutation.isPending}
+          >
+            {LANGUAGES.map((lang) => (
+              <option key={lang.value} value={lang.value}>
+                {lang.label}
+              </option>
+            ))}
+          </select>
+        </div>
+
+        <div>
+          <label className="mb-1 block text-xs font-medium text-neutral-500">
+            Anweisungen (optional)
+          </label>
+          <textarea
+            value={instructions}
+            onChange={(e) => setInstructions(e.target.value)}
+            placeholder="z.B. 'Fokus auf Patentanspruch 1, besonders die technischen Merkmale...'"
+            rows={3}
+            className={inputClass}
+            disabled={mutation.isPending}
+          />
+        </div>
+
+        <button
+          type="submit"
+          disabled={!templateType || mutation.isPending}
+          className="inline-flex items-center gap-2 rounded-md bg-neutral-900 px-4 py-2 text-sm font-medium text-white transition-colors hover:bg-neutral-800 disabled:opacity-50"
+        >
+          {mutation.isPending ? (
+            <>
+              <Loader2 className="h-4 w-4 animate-spin" />
+              Dokument wird erstellt...
+            </>
+          ) : (
+            <>
+              <FileText className="h-4 w-4" />
+              KI-Entwurf erstellen
+            </>
+          )}
+        </button>
+      </form>
+
+      {mutation.isError && (
+        <div className="rounded-md border border-red-200 bg-red-50 px-4 py-3 text-sm text-red-700">
+          Fehler beim Erstellen des Entwurfs. Bitte versuchen Sie es erneut.
+        </div>
+      )}
+
+      {mutation.data && (
+        <div className="space-y-3">
+          <div className="flex items-center justify-between">
+            <h4 className="text-sm font-medium text-neutral-900">
+              {mutation.data.title}
+            </h4>
+            <div className="flex items-center gap-2">
+              <button
+                onClick={handleCopy}
+                className="inline-flex items-center gap-1 rounded-md border border-neutral-200 px-2.5 py-1.5 text-xs font-medium text-neutral-600 transition-colors hover:bg-neutral-50"
+              >
+                {copied ? (
+                  <>
+                    <Check className="h-3.5 w-3.5 text-emerald-500" />
+                    Kopiert
+                  </>
+                ) : (
+                  <>
+                    <Copy className="h-3.5 w-3.5" />
+                    Kopieren
+                  </>
+                )}
+              </button>
+              <button
+                onClick={handleDownload}
+                className="inline-flex items-center gap-1 rounded-md border border-neutral-200 px-2.5 py-1.5 text-xs font-medium text-neutral-600 transition-colors hover:bg-neutral-50"
+              >
+                <Download className="h-3.5 w-3.5" />
+                Download
+              </button>
+            </div>
+          </div>
+          <pre className="max-h-[600px] overflow-auto whitespace-pre-wrap rounded-md border border-neutral-200 bg-neutral-50 p-4 text-sm text-neutral-800">
+            {mutation.data.content}
+          </pre>
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/components/ai/SimilarCaseFinder.tsx

@@ -0,0 +1,183 @@
+"use client";
+
+import { useState } from "react";
+import { useMutation } from "@tanstack/react-query";
+import { api } from "@/lib/api";
+import type { SimilarCasesResponse } from "@/lib/types";
+import {
+  Loader2,
+  Search,
+  ExternalLink,
+  AlertTriangle,
+  Scale,
+  RefreshCw,
+} from "lucide-react";
+
+interface SimilarCaseFinderProps {
+  caseId: string;
+}
+
+const inputClass =
+  "w-full rounded-md border border-neutral-200 bg-white px-3 py-2 text-sm text-neutral-900 outline-none transition-colors focus:border-neutral-400 focus:ring-1 focus:ring-neutral-400";
+
+function RelevanceBadge({ score }: { score: number }) {
+  const pct = Math.round(score * 100);
+  let color = "bg-neutral-100 text-neutral-600";
+  if (pct >= 80) color = "bg-emerald-50 text-emerald-700";
+  else if (pct >= 60) color = "bg-blue-50 text-blue-700";
+  else if (pct >= 40) color = "bg-amber-50 text-amber-700";
+  return (
+    <span
+      className={`inline-block shrink-0 rounded-full px-2 py-0.5 text-xs font-medium ${color}`}
+    >
+      {pct}%
+    </span>
+  );
+}
+
+export function SimilarCaseFinder({ caseId }: SimilarCaseFinderProps) {
+  const [description, setDescription] = useState("");
+
+  const mutation = useMutation({
+    mutationFn: (req: { case_id: string; description: string }) =>
+      api.post<SimilarCasesResponse>("/ai/similar-cases", req),
+  });
+
+  function handleSearch(e?: React.FormEvent) {
+    e?.preventDefault();
+    mutation.mutate({ case_id: caseId, description });
+  }
+
+  return (
+    <div className="space-y-4">
+      <form onSubmit={handleSearch} className="space-y-3">
+        <div>
+          <label className="mb-1 block text-xs font-medium text-neutral-500">
+            Zusaetzliche Beschreibung (optional)
+          </label>
+          <textarea
+            value={description}
+            onChange={(e) => setDescription(e.target.value)}
+            placeholder="z.B. 'SEP-Lizenzierung im Mobilfunkbereich, FRAND-Verteidigung...'"
+            rows={2}
+            className={inputClass}
+            disabled={mutation.isPending}
+          />
+        </div>
+
+        <button
+          type="submit"
+          disabled={mutation.isPending}
+          className="inline-flex items-center gap-2 rounded-md bg-neutral-900 px-4 py-2 text-sm font-medium text-white transition-colors hover:bg-neutral-800 disabled:opacity-50"
+        >
+          {mutation.isPending ? (
+            <>
+              <Loader2 className="h-4 w-4 animate-spin" />
+              Suche laeuft...
+            </>
+          ) : (
+            <>
+              <Search className="h-4 w-4" />
+              Aehnliche Faelle suchen
+            </>
+          )}
+        </button>
+      </form>
+
+      {mutation.isError && (
+        <div className="flex flex-col items-center gap-3 py-6 text-center">
+          <div className="rounded-xl bg-red-50 p-3">
+            <AlertTriangle className="h-6 w-6 text-red-500" />
+          </div>
+          <p className="text-sm text-neutral-900">Suche fehlgeschlagen</p>
+          <p className="text-xs text-neutral-500">
+            Die youpc.org-Datenbank ist moeglicherweise nicht verfuegbar.
+          </p>
+          <button
+            onClick={() => handleSearch()}
+            className="inline-flex items-center gap-1 text-sm text-neutral-500 transition-colors hover:text-neutral-700"
+          >
+            <RefreshCw className="h-3.5 w-3.5" />
+            Erneut versuchen
+          </button>
+        </div>
+      )}
+
+      {mutation.data && (
+        <div className="space-y-3">
+          <div className="flex items-center justify-between">
+            <p className="text-xs text-neutral-500">
+              {mutation.data.count} aehnliche{" "}
+              {mutation.data.count === 1 ? "Fall" : "Faelle"} gefunden
+            </p>
+            <button
+              onClick={() => handleSearch()}
+              disabled={mutation.isPending}
+              className="inline-flex items-center gap-1 rounded-md border border-neutral-200 px-2.5 py-1.5 text-xs font-medium text-neutral-600 transition-colors hover:bg-neutral-50"
+            >
+              <RefreshCw className="h-3.5 w-3.5" />
+              Aktualisieren
+            </button>
+          </div>
+
+          {mutation.data.cases?.length === 0 && (
+            <div className="flex flex-col items-center gap-2 py-6 text-center">
+              <Scale className="h-6 w-6 text-neutral-300" />
+              <p className="text-sm text-neutral-500">
+                Keine aehnlichen UPC-Faelle gefunden.
+              </p>
+            </div>
+          )}
+
+          {mutation.data.cases?.map((c, i) => (
+            <div
+              key={i}
+              className="rounded-md border border-neutral-200 bg-white px-4 py-3"
+            >
+              <div className="flex items-start justify-between gap-3">
+                <div className="min-w-0 flex-1">
+                  <div className="flex items-center gap-2">
+                    <RelevanceBadge score={c.relevance} />
+                    <span className="text-xs font-medium text-neutral-400">
+                      {c.case_number}
+                    </span>
+                    {c.url && (
+                      <a
+                        href={c.url}
+                        target="_blank"
+                        rel="noopener noreferrer"
+                        className="text-neutral-400 transition-colors hover:text-neutral-600"
+                      >
+                        <ExternalLink className="h-3.5 w-3.5" />
+                      </a>
+                    )}
+                  </div>
+                  <p className="mt-1 text-sm font-medium text-neutral-900">
+                    {c.title}
+                  </p>
+                  <div className="mt-1 flex flex-wrap gap-x-3 text-xs text-neutral-400">
+                    {c.court && <span>{c.court}</span>}
+                    {c.date && <span>{c.date}</span>}
+                  </div>
+                </div>
+              </div>
+
+              <p className="mt-2 text-sm text-neutral-600">{c.explanation}</p>
+
+              {c.key_holdings && (
+                <div className="mt-2 rounded border border-neutral-100 bg-neutral-50 px-3 py-2">
+                  <p className="text-xs font-medium text-neutral-500">
+                    Relevante Entscheidungsgruende
+                  </p>
+                  <p className="mt-0.5 text-xs text-neutral-600">
+                    {c.key_holdings}
+                  </p>
+                </div>
+              )}
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/components/deadlines/DeadlineCalculator.tsx

@@ -35,7 +35,9 @@ const inputClass =
 
 export function DeadlineCalculator() {
   const [proceedingType, setProceedingType] = useState("");
-  const [triggerDate, setTriggerDate] = useState("");
+  const [triggerDate, setTriggerDate] = useState(
+    new Date().toISOString().split("T")[0],
+  );
 
   const { data: proceedingTypes, isLoading: typesLoading } = useQuery({
     queryKey: ["proceeding-types"],

frontend/src/components/layout/DemoBanner.tsx

@@ -0,0 +1,17 @@
+"use client";
+
+import { usePermissions } from "@/lib/hooks/usePermissions";
+
+export function DemoBanner() {
+  const { isDemo, isLoading } = usePermissions();
+
+  if (isLoading || !isDemo) return null;
+
+  return (
+    <div className="flex items-center justify-center gap-2 bg-amber-50 border-b border-amber-200 px-4 py-2 text-sm text-amber-800">
+      <span className="font-medium">Demo-Modus</span>
+      <span className="text-amber-600">&mdash;</span>
+      <span>Keine echten Mandantendaten eingeben</span>
+    </div>
+  );
+}

frontend/src/components/layout/Sidebar.tsx

@@ -8,6 +8,7 @@ import {
   Clock,
   Calendar,
   Brain,
+  BarChart3,
   Settings,
   Menu,
   X,
@@ -27,6 +28,7 @@ const allNavigation: NavItem[] = [
   { name: "Akten", href: "/cases", icon: FolderOpen },
   { name: "Fristen", href: "/fristen", icon: Clock },
   { name: "Termine", href: "/termine", icon: Calendar },
+  { name: "Berichte", href: "/berichte", icon: BarChart3 },
   { name: "AI Analyse", href: "/ai/extract", icon: Brain, permission: "ai_extraction" },
   { name: "Einstellungen", href: "/einstellungen", icon: Settings, permission: "manage_settings" },
 ];

frontend/src/components/reports/BillingTab.tsx

@@ -0,0 +1,240 @@
+"use client";
+
+import type { BillingReport } from "@/lib/types";
+import {
+  BarChart,
+  Bar,
+  XAxis,
+  YAxis,
+  CartesianGrid,
+  Tooltip,
+  ResponsiveContainer,
+  Legend,
+  LineChart,
+  Line,
+} from "recharts";
+import { Receipt, TrendingUp, FolderOpen } from "lucide-react";
+
+function formatMonth(period: string): string {
+  const [year, month] = period.split("-");
+  const months = [
+    "Jan",
+    "Feb",
+    "Mär",
+    "Apr",
+    "Mai",
+    "Jun",
+    "Jul",
+    "Aug",
+    "Sep",
+    "Okt",
+    "Nov",
+    "Dez",
+  ];
+  return `${months[parseInt(month, 10) - 1]} ${year.slice(2)}`;
+}
+
+export function BillingTab({ data }: { data: BillingReport }) {
+  const chartData = data.monthly.map((m) => ({
+    ...m,
+    name: formatMonth(m.period),
+  }));
+
+  const totalNew = data.monthly.reduce((sum, m) => sum + m.cases_new, 0);
+  const totalClosed = data.monthly.reduce((sum, m) => sum + m.cases_closed, 0);
+  const totalByType = data.by_type.reduce((sum, t) => sum + t.total, 0);
+
+  return (
+    <div className="space-y-6">
+      {/* Summary cards */}
+      <div className="grid grid-cols-1 gap-4 sm:grid-cols-3">
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <FolderOpen className="h-4 w-4" />
+            Neue Mandate
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-neutral-900">
+            {totalNew}
+          </p>
+          <p className="mt-1 text-xs text-neutral-500">im Zeitraum</p>
+        </div>
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <Receipt className="h-4 w-4" />
+            Abgeschlossen
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-neutral-900">
+            {totalClosed}
+          </p>
+          <p className="mt-1 text-xs text-neutral-500">abrechenbar</p>
+        </div>
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <TrendingUp className="h-4 w-4" />
+            Verfahrensarten
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-neutral-900">
+            {data.by_type.length}
+          </p>
+          <p className="mt-1 text-xs text-neutral-500">
+            {totalByType} Akten gesamt
+          </p>
+        </div>
+      </div>
+
+      {/* New cases trend */}
+      <div className="rounded-xl border border-neutral-200 bg-white p-5">
+        <h3 className="mb-4 text-sm font-medium text-neutral-900">
+          Umsatzentwicklung (Mandate)
+        </h3>
+        {chartData.length === 0 ? (
+          <p className="py-8 text-center text-sm text-neutral-400">
+            Keine Daten im gewählten Zeitraum
+          </p>
+        ) : (
+          <ResponsiveContainer width="100%" height={300}>
+            <LineChart data={chartData}>
+              <CartesianGrid strokeDasharray="3 3" stroke="#e5e5e5" />
+              <XAxis dataKey="name" tick={{ fontSize: 12 }} stroke="#a3a3a3" />
+              <YAxis
+                allowDecimals={false}
+                tick={{ fontSize: 12 }}
+                stroke="#a3a3a3"
+              />
+              <Tooltip
+                contentStyle={{
+                  border: "1px solid #e5e5e5",
+                  borderRadius: 8,
+                  fontSize: 13,
+                }}
+              />
+              <Legend wrapperStyle={{ fontSize: 13 }} />
+              <Line
+                type="monotone"
+                dataKey="cases_new"
+                name="Neue Mandate"
+                stroke="#171717"
+                strokeWidth={2}
+                dot={{ fill: "#171717", r: 4 }}
+              />
+              <Line
+                type="monotone"
+                dataKey="cases_closed"
+                name="Abgeschlossen"
+                stroke="#a3a3a3"
+                strokeWidth={2}
+                dot={{ fill: "#a3a3a3", r: 4 }}
+              />
+            </LineChart>
+          </ResponsiveContainer>
+        )}
+      </div>
+
+      {/* By type breakdown */}
+      <div className="grid grid-cols-1 gap-6 lg:grid-cols-2">
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <h3 className="mb-4 text-sm font-medium text-neutral-900">
+            Mandate nach Verfahrensart
+          </h3>
+          {data.by_type.length === 0 ? (
+            <p className="py-8 text-center text-sm text-neutral-400">
+              Keine Daten
+            </p>
+          ) : (
+            <ResponsiveContainer width="100%" height={250}>
+              <BarChart data={data.by_type} layout="vertical">
+                <CartesianGrid strokeDasharray="3 3" stroke="#e5e5e5" />
+                <XAxis
+                  type="number"
+                  allowDecimals={false}
+                  tick={{ fontSize: 12 }}
+                  stroke="#a3a3a3"
+                />
+                <YAxis
+                  type="category"
+                  dataKey="case_type"
+                  tick={{ fontSize: 12 }}
+                  stroke="#a3a3a3"
+                  width={100}
+                />
+                <Tooltip
+                  contentStyle={{
+                    border: "1px solid #e5e5e5",
+                    borderRadius: 8,
+                    fontSize: 13,
+                  }}
+                />
+                <Legend wrapperStyle={{ fontSize: 13 }} />
+                <Bar
+                  dataKey="active"
+                  name="Aktiv"
+                  stackId="a"
+                  fill="#171717"
+                />
+                <Bar
+                  dataKey="closed"
+                  name="Geschlossen"
+                  stackId="a"
+                  fill="#a3a3a3"
+                  radius={[0, 4, 4, 0]}
+                />
+              </BarChart>
+            </ResponsiveContainer>
+          )}
+        </div>
+
+        {/* Summary table */}
+        <div className="rounded-xl border border-neutral-200 bg-white">
+          <div className="border-b border-neutral-100 px-5 py-4">
+            <h3 className="text-sm font-medium text-neutral-900">
+              Zusammenfassung
+            </h3>
+          </div>
+          {data.by_type.length === 0 ? (
+            <p className="px-5 py-8 text-center text-sm text-neutral-400">
+              Keine Daten
+            </p>
+          ) : (
+            <div className="overflow-x-auto">
+              <table className="w-full text-sm">
+                <thead>
+                  <tr className="border-b border-neutral-100 text-left text-neutral-500">
+                    <th className="px-5 py-3 font-medium">Verfahrensart</th>
+                    <th className="px-5 py-3 font-medium text-right">Aktiv</th>
+                    <th className="px-5 py-3 font-medium text-right">
+                      Geschlossen
+                    </th>
+                    <th className="px-5 py-3 font-medium text-right">
+                      Gesamt
+                    </th>
+                  </tr>
+                </thead>
+                <tbody>
+                  {data.by_type.map((t) => (
+                    <tr
+                      key={t.case_type}
+                      className="border-b border-neutral-50 last:border-b-0"
+                    >
+                      <td className="px-5 py-3 text-neutral-900">
+                        {t.case_type}
+                      </td>
+                      <td className="px-5 py-3 text-right text-neutral-600">
+                        {t.active}
+                      </td>
+                      <td className="px-5 py-3 text-right text-neutral-600">
+                        {t.closed}
+                      </td>
+                      <td className="px-5 py-3 text-right font-medium text-neutral-900">
+                        {t.total}
+                      </td>
+                    </tr>
+                  ))}
+                </tbody>
+              </table>
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}

frontend/src/components/reports/CasesTab.tsx

@@ -0,0 +1,223 @@
+"use client";
+
+import type { CaseReport } from "@/lib/types";
+import {
+  BarChart,
+  Bar,
+  XAxis,
+  YAxis,
+  CartesianGrid,
+  Tooltip,
+  ResponsiveContainer,
+  Legend,
+  PieChart,
+  Pie,
+  Cell,
+} from "recharts";
+import { FolderOpen, TrendingUp, TrendingDown } from "lucide-react";
+
+const COLORS = [
+  "#171717",
+  "#525252",
+  "#a3a3a3",
+  "#d4d4d4",
+  "#737373",
+  "#404040",
+  "#e5e5e5",
+  "#262626",
+];
+
+function formatMonth(period: string): string {
+  const [year, month] = period.split("-");
+  const months = [
+    "Jan",
+    "Feb",
+    "Mär",
+    "Apr",
+    "Mai",
+    "Jun",
+    "Jul",
+    "Aug",
+    "Sep",
+    "Okt",
+    "Nov",
+    "Dez",
+  ];
+  return `${months[parseInt(month, 10) - 1]} ${year.slice(2)}`;
+}
+
+export function CasesTab({ data }: { data: CaseReport }) {
+  const chartData = data.monthly.map((m) => ({
+    ...m,
+    name: formatMonth(m.period),
+  }));
+
+  return (
+    <div className="space-y-6">
+      {/* Summary cards */}
+      <div className="grid grid-cols-1 gap-4 sm:grid-cols-3">
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <FolderOpen className="h-4 w-4" />
+            Eröffnet
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-neutral-900">
+            {data.total.opened}
+          </p>
+        </div>
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <TrendingDown className="h-4 w-4" />
+            Geschlossen
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-neutral-900">
+            {data.total.closed}
+          </p>
+        </div>
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <TrendingUp className="h-4 w-4" />
+            Aktiv
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-emerald-600">
+            {data.total.active}
+          </p>
+        </div>
+      </div>
+
+      {/* Bar chart: opened/closed per month */}
+      <div className="rounded-xl border border-neutral-200 bg-white p-5">
+        <h3 className="mb-4 text-sm font-medium text-neutral-900">
+          Akten pro Monat
+        </h3>
+        {chartData.length === 0 ? (
+          <p className="py-8 text-center text-sm text-neutral-400">
+            Keine Daten im gewählten Zeitraum
+          </p>
+        ) : (
+          <ResponsiveContainer width="100%" height={300}>
+            <BarChart data={chartData}>
+              <CartesianGrid strokeDasharray="3 3" stroke="#e5e5e5" />
+              <XAxis dataKey="name" tick={{ fontSize: 12 }} stroke="#a3a3a3" />
+              <YAxis
+                allowDecimals={false}
+                tick={{ fontSize: 12 }}
+                stroke="#a3a3a3"
+              />
+              <Tooltip
+                contentStyle={{
+                  border: "1px solid #e5e5e5",
+                  borderRadius: 8,
+                  fontSize: 13,
+                }}
+              />
+              <Legend wrapperStyle={{ fontSize: 13 }} />
+              <Bar
+                dataKey="opened"
+                name="Eröffnet"
+                fill="#171717"
+                radius={[4, 4, 0, 0]}
+              />
+              <Bar
+                dataKey="closed"
+                name="Geschlossen"
+                fill="#a3a3a3"
+                radius={[4, 4, 0, 0]}
+              />
+            </BarChart>
+          </ResponsiveContainer>
+        )}
+      </div>
+
+      {/* Pie charts row */}
+      <div className="grid grid-cols-1 gap-6 lg:grid-cols-2">
+        {/* By type */}
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <h3 className="mb-4 text-sm font-medium text-neutral-900">
+            Nach Verfahrensart
+          </h3>
+          {data.by_type.length === 0 ? (
+            <p className="py-8 text-center text-sm text-neutral-400">
+              Keine Daten
+            </p>
+          ) : (
+            <div className="flex items-center gap-4">
+              <ResponsiveContainer width="50%" height={200}>
+                <PieChart>
+                  <Pie
+                    data={data.by_type}
+                    dataKey="count"
+                    nameKey="case_type"
+                    cx="50%"
+                    cy="50%"
+                    innerRadius={40}
+                    outerRadius={80}
+                  >
+                    {data.by_type.map((_, i) => (
+                      <Cell
+                        key={i}
+                        fill={COLORS[i % COLORS.length]}
+                      />
+                    ))}
+                  </Pie>
+                  <Tooltip />
+                </PieChart>
+              </ResponsiveContainer>
+              <div className="flex-1 space-y-2">
+                {data.by_type.map((item, i) => (
+                  <div key={i} className="flex items-center gap-2 text-sm">
+                    <div
+                      className="h-3 w-3 rounded-full"
+                      style={{
+                        backgroundColor: COLORS[i % COLORS.length],
+                      }}
+                    />
+                    <span className="text-neutral-600">{item.case_type}</span>
+                    <span className="ml-auto font-medium text-neutral-900">
+                      {item.count}
+                    </span>
+                  </div>
+                ))}
+              </div>
+            </div>
+          )}
+        </div>
+
+        {/* By court */}
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <h3 className="mb-4 text-sm font-medium text-neutral-900">
+            Nach Gericht
+          </h3>
+          {data.by_court.length === 0 ? (
+            <p className="py-8 text-center text-sm text-neutral-400">
+              Keine Daten
+            </p>
+          ) : (
+            <div className="space-y-3">
+              {data.by_court.map((item, i) => {
+                const maxCount = Math.max(...data.by_court.map((c) => c.count));
+                const pct = maxCount > 0 ? (item.count / maxCount) * 100 : 0;
+                return (
+                  <div key={i}>
+                    <div className="flex items-center justify-between text-sm">
+                      <span className="text-neutral-600">{item.court}</span>
+                      <span className="font-medium text-neutral-900">
+                        {item.count}
+                      </span>
+                    </div>
+                    <div className="mt-1 h-2 rounded-full bg-neutral-100">
+                      <div
+                        className="h-2 rounded-full bg-neutral-900 transition-all"
+                        style={{ width: `${pct}%` }}
+                      />
+                    </div>
+                  </div>
+                );
+              })}
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}

frontend/src/components/reports/DeadlinesTab.tsx

@@ -0,0 +1,204 @@
+"use client";
+
+import type { DeadlineReport } from "@/lib/types";
+import Link from "next/link";
+import {
+  LineChart,
+  Line,
+  XAxis,
+  YAxis,
+  CartesianGrid,
+  Tooltip,
+  ResponsiveContainer,
+  Legend,
+} from "recharts";
+import { CheckCircle, XCircle, Clock, AlertTriangle } from "lucide-react";
+
+function formatMonth(period: string): string {
+  const [year, month] = period.split("-");
+  const months = [
+    "Jan",
+    "Feb",
+    "Mär",
+    "Apr",
+    "Mai",
+    "Jun",
+    "Jul",
+    "Aug",
+    "Sep",
+    "Okt",
+    "Nov",
+    "Dez",
+  ];
+  return `${months[parseInt(month, 10) - 1]} ${year.slice(2)}`;
+}
+
+function formatDate(dateStr: string): string {
+  const d = new Date(dateStr);
+  return d.toLocaleDateString("de-DE", {
+    day: "2-digit",
+    month: "2-digit",
+    year: "numeric",
+  });
+}
+
+export function DeadlinesTab({ data }: { data: DeadlineReport }) {
+  const chartData = data.monthly.map((m) => ({
+    ...m,
+    name: formatMonth(m.period),
+    compliance_rate: Math.round(m.compliance_rate * 10) / 10,
+  }));
+
+  const complianceColor =
+    data.total.compliance_rate >= 90
+      ? "text-emerald-600"
+      : data.total.compliance_rate >= 70
+        ? "text-amber-600"
+        : "text-red-600";
+
+  return (
+    <div className="space-y-6">
+      {/* Summary cards */}
+      <div className="grid grid-cols-2 gap-4 sm:grid-cols-4">
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <Clock className="h-4 w-4" />
+            Gesamt
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-neutral-900">
+            {data.total.total}
+          </p>
+        </div>
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <CheckCircle className="h-4 w-4" />
+            Eingehalten
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-emerald-600">
+            {data.total.met}
+          </p>
+        </div>
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <XCircle className="h-4 w-4" />
+            Versäumt
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-red-600">
+            {data.total.missed}
+          </p>
+        </div>
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <CheckCircle className="h-4 w-4" />
+            Einhaltungsquote
+          </div>
+          <p className={`mt-2 text-2xl font-semibold ${complianceColor}`}>
+            {data.total.compliance_rate.toFixed(1)}%
+          </p>
+        </div>
+      </div>
+
+      {/* Compliance rate over time */}
+      <div className="rounded-xl border border-neutral-200 bg-white p-5">
+        <h3 className="mb-4 text-sm font-medium text-neutral-900">
+          Fristeneinhaltung im Zeitverlauf
+        </h3>
+        {chartData.length === 0 ? (
+          <p className="py-8 text-center text-sm text-neutral-400">
+            Keine Daten im gewählten Zeitraum
+          </p>
+        ) : (
+          <ResponsiveContainer width="100%" height={300}>
+            <LineChart data={chartData}>
+              <CartesianGrid strokeDasharray="3 3" stroke="#e5e5e5" />
+              <XAxis dataKey="name" tick={{ fontSize: 12 }} stroke="#a3a3a3" />
+              <YAxis
+                domain={[0, 100]}
+                tick={{ fontSize: 12 }}
+                stroke="#a3a3a3"
+                unit="%"
+              />
+              <Tooltip
+                contentStyle={{
+                  border: "1px solid #e5e5e5",
+                  borderRadius: 8,
+                  fontSize: 13,
+                }}
+                formatter={(value) => [`${value}%`, "Quote"]}
+              />
+              <Legend wrapperStyle={{ fontSize: 13 }} />
+              <Line
+                type="monotone"
+                dataKey="compliance_rate"
+                name="Einhaltungsquote"
+                stroke="#171717"
+                strokeWidth={2}
+                dot={{ fill: "#171717", r: 4 }}
+                activeDot={{ r: 6 }}
+              />
+            </LineChart>
+          </ResponsiveContainer>
+        )}
+      </div>
+
+      {/* Missed deadlines table */}
+      <div className="rounded-xl border border-neutral-200 bg-white">
+        <div className="border-b border-neutral-100 px-5 py-4">
+          <h3 className="text-sm font-medium text-neutral-900">
+            Versäumte Fristen
+          </h3>
+        </div>
+        {data.missed.length === 0 ? (
+          <div className="px-5 py-8 text-center">
+            <CheckCircle className="mx-auto h-8 w-8 text-emerald-400" />
+            <p className="mt-2 text-sm text-neutral-500">
+              Keine versäumten Fristen im gewählten Zeitraum
+            </p>
+          </div>
+        ) : (
+          <div className="overflow-x-auto">
+            <table className="w-full text-sm">
+              <thead>
+                <tr className="border-b border-neutral-100 text-left text-neutral-500">
+                  <th className="px-5 py-3 font-medium">Frist</th>
+                  <th className="px-5 py-3 font-medium">Akte</th>
+                  <th className="px-5 py-3 font-medium">Fällig am</th>
+                  <th className="px-5 py-3 font-medium text-right">
+                    Tage überfällig
+                  </th>
+                </tr>
+              </thead>
+              <tbody>
+                {data.missed.map((d) => (
+                  <tr
+                    key={d.id}
+                    className="border-b border-neutral-50 last:border-b-0"
+                  >
+                    <td className="px-5 py-3 text-neutral-900">{d.title}</td>
+                    <td className="px-5 py-3">
+                      <Link
+                        href={`/cases/${d.case_id}`}
+                        className="text-neutral-600 hover:text-neutral-900"
+                      >
+                        {d.case_number} — {d.case_title}
+                      </Link>
+                    </td>
+                    <td className="px-5 py-3 text-neutral-600">
+                      {formatDate(d.due_date)}
+                    </td>
+                    <td className="px-5 py-3 text-right">
+                      <span className="inline-flex items-center gap-1 rounded-full bg-red-50 px-2 py-0.5 text-xs font-medium text-red-700">
+                        <AlertTriangle className="h-3 w-3" />
+                        {d.days_overdue}
+                      </span>
+                    </td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

frontend/src/components/reports/WorkloadTab.tsx

@@ -0,0 +1,187 @@
+"use client";
+
+import type { WorkloadReport } from "@/lib/types";
+import {
+  BarChart,
+  Bar,
+  XAxis,
+  YAxis,
+  CartesianGrid,
+  Tooltip,
+  ResponsiveContainer,
+  Legend,
+} from "recharts";
+import { Users, AlertTriangle, CheckCircle } from "lucide-react";
+
+export function WorkloadTab({ data }: { data: WorkloadReport }) {
+  const chartData = data.users.map((u, i) => ({
+    name: `Nutzer ${i + 1}`,
+    user_id: u.user_id,
+    active_cases: u.active_cases,
+    deadlines: u.deadlines,
+    overdue: u.overdue,
+    completed: u.completed,
+  }));
+
+  const totalCases = data.users.reduce((sum, u) => sum + u.active_cases, 0);
+  const totalOverdue = data.users.reduce((sum, u) => sum + u.overdue, 0);
+  const totalCompleted = data.users.reduce((sum, u) => sum + u.completed, 0);
+
+  return (
+    <div className="space-y-6">
+      {/* Summary cards */}
+      <div className="grid grid-cols-1 gap-4 sm:grid-cols-3">
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <Users className="h-4 w-4" />
+            Mitarbeiter
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-neutral-900">
+            {data.users.length}
+          </p>
+          <p className="mt-1 text-xs text-neutral-500">
+            {totalCases} aktive Akten gesamt
+          </p>
+        </div>
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <AlertTriangle className="h-4 w-4" />
+            Überfällige Fristen
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-red-600">
+            {totalOverdue}
+          </p>
+        </div>
+        <div className="rounded-xl border border-neutral-200 bg-white p-5">
+          <div className="flex items-center gap-2 text-sm text-neutral-500">
+            <CheckCircle className="h-4 w-4" />
+            Erledigte Fristen
+          </div>
+          <p className="mt-2 text-2xl font-semibold text-emerald-600">
+            {totalCompleted}
+          </p>
+        </div>
+      </div>
+
+      {/* Stacked bar chart */}
+      <div className="rounded-xl border border-neutral-200 bg-white p-5">
+        <h3 className="mb-4 text-sm font-medium text-neutral-900">
+          Auslastung pro Mitarbeiter
+        </h3>
+        {chartData.length === 0 ? (
+          <p className="py-8 text-center text-sm text-neutral-400">
+            Keine Daten im gewählten Zeitraum
+          </p>
+        ) : (
+          <ResponsiveContainer width="100%" height={300}>
+            <BarChart data={chartData}>
+              <CartesianGrid strokeDasharray="3 3" stroke="#e5e5e5" />
+              <XAxis dataKey="name" tick={{ fontSize: 12 }} stroke="#a3a3a3" />
+              <YAxis
+                allowDecimals={false}
+                tick={{ fontSize: 12 }}
+                stroke="#a3a3a3"
+              />
+              <Tooltip
+                contentStyle={{
+                  border: "1px solid #e5e5e5",
+                  borderRadius: 8,
+                  fontSize: 13,
+                }}
+              />
+              <Legend wrapperStyle={{ fontSize: 13 }} />
+              <Bar
+                dataKey="active_cases"
+                name="Aktive Akten"
+                stackId="work"
+                fill="#171717"
+                radius={[0, 0, 0, 0]}
+              />
+              <Bar
+                dataKey="completed"
+                name="Erledigt"
+                stackId="deadlines"
+                fill="#a3a3a3"
+                radius={[0, 0, 0, 0]}
+              />
+              <Bar
+                dataKey="overdue"
+                name="Überfällig"
+                stackId="deadlines"
+                fill="#dc2626"
+                radius={[4, 4, 0, 0]}
+              />
+            </BarChart>
+          </ResponsiveContainer>
+        )}
+      </div>
+
+      {/* Table */}
+      <div className="rounded-xl border border-neutral-200 bg-white">
+        <div className="border-b border-neutral-100 px-5 py-4">
+          <h3 className="text-sm font-medium text-neutral-900">
+            Übersicht pro Mitarbeiter
+          </h3>
+        </div>
+        {data.users.length === 0 ? (
+          <p className="px-5 py-8 text-center text-sm text-neutral-400">
+            Keine Mitarbeiter mit zugewiesenen Akten
+          </p>
+        ) : (
+          <div className="overflow-x-auto">
+            <table className="w-full text-sm">
+              <thead>
+                <tr className="border-b border-neutral-100 text-left text-neutral-500">
+                  <th className="px-5 py-3 font-medium">Mitarbeiter</th>
+                  <th className="px-5 py-3 font-medium text-right">
+                    Aktive Akten
+                  </th>
+                  <th className="px-5 py-3 font-medium text-right">Fristen</th>
+                  <th className="px-5 py-3 font-medium text-right">
+                    Überfällig
+                  </th>
+                  <th className="px-5 py-3 font-medium text-right">
+                    Erledigt
+                  </th>
+                </tr>
+              </thead>
+              <tbody>
+                {data.users.map((u, i) => (
+                  <tr
+                    key={u.user_id}
+                    className="border-b border-neutral-50 last:border-b-0"
+                  >
+                    <td className="px-5 py-3 text-neutral-900">
+                      Nutzer {i + 1}
+                      <span className="ml-2 text-xs text-neutral-400">
+                        {u.user_id.slice(0, 8)}...
+                      </span>
+                    </td>
+                    <td className="px-5 py-3 text-right font-medium text-neutral-900">
+                      {u.active_cases}
+                    </td>
+                    <td className="px-5 py-3 text-right text-neutral-600">
+                      {u.deadlines}
+                    </td>
+                    <td className="px-5 py-3 text-right">
+                      {u.overdue > 0 ? (
+                        <span className="inline-flex items-center rounded-full bg-red-50 px-2 py-0.5 text-xs font-medium text-red-700">
+                          {u.overdue}
+                        </span>
+                      ) : (
+                        <span className="text-neutral-400">0</span>
+                      )}
+                    </td>
+                    <td className="px-5 py-3 text-right text-emerald-600">
+                      {u.completed}
+                    </td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

frontend/src/components/templates/TemplateEditor.tsx

@@ -0,0 +1,161 @@
+"use client";
+
+import type { DocumentTemplate } from "@/lib/types";
+import { TEMPLATE_CATEGORY_LABELS } from "@/lib/types";
+import { Loader2, Plus } from "lucide-react";
+import { useState, useRef } from "react";
+
+const AVAILABLE_VARIABLES = [
+  { group: "Akte", vars: ["case.number", "case.title", "case.court", "case.court_ref"] },
+  { group: "Parteien", vars: ["party.claimant.name", "party.defendant.name", "party.claimant.representative", "party.defendant.representative"] },
+  { group: "Kanzlei", vars: ["tenant.name", "tenant.address"] },
+  { group: "Benutzer", vars: ["user.name", "user.email"] },
+  { group: "Datum", vars: ["date.today", "date.today_long"] },
+  { group: "Frist", vars: ["deadline.title", "deadline.due_date"] },
+];
+
+interface Props {
+  template?: DocumentTemplate;
+  onSave: (data: Partial<DocumentTemplate>) => void;
+  isSaving: boolean;
+}
+
+export function TemplateEditor({ template, onSave, isSaving }: Props) {
+  const [name, setName] = useState(template?.name ?? "");
+  const [description, setDescription] = useState(template?.description ?? "");
+  const [category, setCategory] = useState<string>(template?.category ?? "schriftsatz");
+  const [content, setContent] = useState(template?.content ?? "");
+  const textareaRef = useRef<HTMLTextAreaElement>(null);
+
+  const insertVariable = (variable: string) => {
+    const el = textareaRef.current;
+    if (!el) return;
+
+    const placeholder = `{{${variable}}}`;
+    const start = el.selectionStart;
+    const end = el.selectionEnd;
+    const newContent =
+      content.substring(0, start) + placeholder + content.substring(end);
+    setContent(newContent);
+
+    // Restore cursor position after the inserted text
+    requestAnimationFrame(() => {
+      el.focus();
+      el.selectionStart = el.selectionEnd = start + placeholder.length;
+    });
+  };
+
+  const handleSave = () => {
+    if (!name.trim()) return;
+    onSave({
+      name: name.trim(),
+      description: description.trim() || undefined,
+      category: category as DocumentTemplate["category"],
+      content,
+      variables: AVAILABLE_VARIABLES.flatMap((g) => g.vars).filter((v) =>
+        content.includes(`{{${v}}}`),
+      ),
+    });
+  };
+
+  return (
+    <div className="space-y-4">
+      {/* Metadata */}
+      <div className="grid gap-3 rounded-lg border border-neutral-200 bg-white p-4 sm:grid-cols-2">
+        <div>
+          <label className="mb-1 block text-xs font-medium text-neutral-600">
+            Name
+          </label>
+          <input
+            type="text"
+            value={name}
+            onChange={(e) => setName(e.target.value)}
+            placeholder="z.B. Klageerwiderung"
+            className="w-full rounded-md border border-neutral-200 px-3 py-2 text-sm focus:border-neutral-400 focus:outline-none"
+          />
+        </div>
+        <div>
+          <label className="mb-1 block text-xs font-medium text-neutral-600">
+            Kategorie
+          </label>
+          <select
+            value={category}
+            onChange={(e) => setCategory(e.target.value)}
+            className="w-full rounded-md border border-neutral-200 px-3 py-2 text-sm focus:border-neutral-400 focus:outline-none"
+          >
+            {Object.entries(TEMPLATE_CATEGORY_LABELS).map(([key, label]) => (
+              <option key={key} value={key}>
+                {label}
+              </option>
+            ))}
+          </select>
+        </div>
+        <div className="sm:col-span-2">
+          <label className="mb-1 block text-xs font-medium text-neutral-600">
+            Beschreibung
+          </label>
+          <input
+            type="text"
+            value={description}
+            onChange={(e) => setDescription(e.target.value)}
+            placeholder="Optionale Beschreibung"
+            className="w-full rounded-md border border-neutral-200 px-3 py-2 text-sm focus:border-neutral-400 focus:outline-none"
+          />
+        </div>
+      </div>
+
+      {/* Variable toolbar */}
+      <div className="rounded-lg border border-neutral-200 bg-white p-4">
+        <h3 className="mb-2 text-xs font-medium text-neutral-600">
+          Variablen einfügen
+        </h3>
+        <div className="space-y-2">
+          {AVAILABLE_VARIABLES.map((group) => (
+            <div key={group.group} className="flex flex-wrap items-center gap-1.5">
+              <span className="text-xs font-medium text-neutral-400 w-16 shrink-0">
+                {group.group}
+              </span>
+              {group.vars.map((v) => (
+                <button
+                  key={v}
+                  onClick={() => insertVariable(v)}
+                  className="flex items-center gap-0.5 rounded bg-neutral-100 px-1.5 py-0.5 text-xs text-neutral-600 transition-colors hover:bg-neutral-200"
+                >
+                  <Plus className="h-2.5 w-2.5" />
+                  {v}
+                </button>
+              ))}
+            </div>
+          ))}
+        </div>
+      </div>
+
+      {/* Content editor */}
+      <div className="rounded-lg border border-neutral-200 bg-white p-4">
+        <label className="mb-2 block text-xs font-medium text-neutral-600">
+          Inhalt (Markdown)
+        </label>
+        <textarea
+          ref={textareaRef}
+          value={content}
+          onChange={(e) => setContent(e.target.value)}
+          rows={24}
+          placeholder="# Dokumenttitel&#10;&#10;Schreiben Sie hier den Vorlageninhalt...&#10;&#10;Verwenden Sie {{variablen}} für automatische Befüllung."
+          className="w-full rounded-md border border-neutral-200 px-3 py-2 font-mono text-sm leading-relaxed focus:border-neutral-400 focus:outline-none"
+        />
+      </div>
+
+      {/* Save button */}
+      <div className="flex justify-end">
+        <button
+          onClick={handleSave}
+          disabled={!name.trim() || isSaving}
+          className="flex items-center gap-1.5 rounded-md bg-neutral-900 px-4 py-2 text-sm font-medium text-white transition-colors hover:bg-neutral-800 disabled:opacity-50"
+        >
+          {isSaving && <Loader2 className="h-3.5 w-3.5 animate-spin" />}
+          {template ? "Speichern" : "Vorlage erstellen"}
+        </button>
+      </div>
+    </div>
+  );
+}

frontend/src/lib/api.ts

@@ -4,6 +4,14 @@ import type { ApiError } from "@/lib/types";
 class ApiClient {
   private baseUrl = "/api";
 
+  /** Strip leading /api/ if accidentally included — baseUrl already provides it */
+  private normalizePath(path: string): string {
+    if (path.startsWith("/api/")) {
+      return path.slice(4); // "/api/foo" -> "/foo"
+    }
+    return path;
+  }
+
   private async getHeaders(): Promise<HeadersInit> {
     const supabase = createClient();
     const {
@@ -29,9 +37,10 @@ class ApiClient {
   }
 
   private async request<T>(
-    path: string,
+    rawPath: string,
     options: RequestInit = {},
   ): Promise<T> {
+    const path = this.normalizePath(rawPath);
     const headers = await this.getHeaders();
     const res = await fetch(`${this.baseUrl}${path}`, {
       ...options,
@@ -80,7 +89,8 @@ class ApiClient {
     return this.request<T>(path, { method: "DELETE" });
   }
 
-  async postFormData<T>(path: string, formData: FormData): Promise<T> {
+  async postFormData<T>(rawPath: string, formData: FormData): Promise<T> {
+    const path = this.normalizePath(rawPath);
     const supabase = createClient();
     const {
       data: { session },

frontend/src/lib/hooks/usePermissions.ts

@@ -25,5 +25,6 @@ export function usePermissions() {
     isLoading,
     userId: data?.user_id ?? null,
     tenantId: data?.tenant_id ?? null,
+    isDemo: data?.is_demo ?? false,
   };
 }

frontend/src/lib/types.ts

@@ -266,6 +266,7 @@ export interface UserInfo {
   tenant_id: string;
   role: UserRole;
   permissions: string[];
+  is_demo: boolean;
 }
 
 export type UserRole = "owner" | "partner" | "associate" | "paralegal" | "secretary";
@@ -352,31 +353,6 @@ export interface DashboardData {
   recent_activity?: RecentActivity[];
 }
 
-// Notes
-export interface Note {
-  id: string;
-  tenant_id: string;
-  case_id?: string;
-  deadline_id?: string;
-  appointment_id?: string;
-  case_event_id?: string;
-  content: string;
-  created_by?: string;
-  created_at: string;
-  updated_at: string;
-}
-
-// Recent Activity
-export interface RecentActivity {
-  id: string;
-  event_type?: string;
-  title: string;
-  case_id: string;
-  case_number: string;
-  event_date?: string;
-  created_at: string;
-}
-
 // AI Extraction types
 
 export interface ExtractedDeadline {
@@ -393,3 +369,329 @@ export interface ExtractionResponse {
   deadlines: ExtractedDeadline[];
   count: number;
 }
+
+// AI Document Drafting
+
+export interface DocumentDraft {
+  title: string;
+  content: string;
+  language: string;
+}
+
+export interface DraftDocumentRequest {
+  case_id: string;
+  template_type: string;
+  instructions: string;
+  language: string;
+}
+
+export const TEMPLATE_TYPES: Record<string, string> = {
+  klageschrift: "Klageschrift",
+  klageerwiderung: "Klageerwiderung",
+  abmahnung: "Abmahnung",
+  schriftsatz: "Schriftsatz",
+  berufung: "Berufungsschrift",
+  antrag: "Antrag",
+  stellungnahme: "Stellungnahme",
+  gutachten: "Gutachten",
+  vertrag: "Vertrag",
+  vollmacht: "Vollmacht",
+  upc_claim: "UPC Statement of Claim",
+  upc_defence: "UPC Statement of Defence",
+  upc_counterclaim: "UPC Counterclaim for Revocation",
+  upc_injunction: "UPC Provisional Measures",
+};
+
+export const TEMPLATE_CATEGORY_LABELS: Record<string, string> = {
+  schriftsatz: "Schriftsatz",
+  vertrag: "Vertrag",
+  korrespondenz: "Korrespondenz",
+  intern: "Intern",
+};
+
+// AI Case Strategy
+
+export interface StrategyStep {
+  priority: "high" | "medium" | "low";
+  action: string;
+  reasoning: string;
+  deadline?: string;
+}
+
+export interface RiskItem {
+  level: "high" | "medium" | "low";
+  risk: string;
+  mitigation: string;
+}
+
+export interface TimelineItem {
+  date: string;
+  event: string;
+  importance: "critical" | "important" | "routine";
+}
+
+export interface StrategyRecommendation {
+  summary: string;
+  next_steps: StrategyStep[];
+  risk_assessment: RiskItem[];
+  timeline: TimelineItem[];
+}
+
+// AI Similar Case Finder
+
+export interface SimilarCase {
+  case_number: string;
+  title: string;
+  court: string;
+  date: string;
+  relevance: number;
+  explanation: string;
+  key_holdings: string;
+  url?: string;
+}
+
+export interface SimilarCasesResponse {
+  cases: SimilarCase[];
+  count: number;
+}
+
+// Time Tracking
+
+export interface TimeEntry {
+  id: string;
+  tenant_id: string;
+  case_id: string;
+  user_id: string;
+  description: string;
+  duration_minutes: number;
+  hourly_rate: number;
+  billable: boolean;
+  billed?: boolean;
+  activity?: string;
+  date: string;
+  created_at: string;
+  updated_at: string;
+}
+
+// Billing
+
+export interface InvoiceItem {
+  description: string;
+  amount: number;
+  duration_minutes?: number;
+  hourly_rate?: number;
+}
+
+export interface Invoice {
+  id: string;
+  tenant_id: string;
+  case_id: string;
+  invoice_number: string;
+  client_name: string;
+  client_address?: string;
+  items: InvoiceItem[];
+  subtotal: number;
+  tax_rate: number;
+  tax_amount: number;
+  total: number;
+  status: string;
+  notes?: string;
+  issued_at?: string;
+  due_at?: string;
+  paid_at?: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface BillingRate {
+  id: string;
+  tenant_id: string;
+  user_id?: string;
+  rate: number;
+  currency: string;
+  valid_from: string;
+  valid_to?: string;
+  created_at: string;
+  updated_at: string;
+}
+
+// Reports
+
+export interface BillingReportMonthly {
+  period: string;
+  cases_new: number;
+  cases_closed: number;
+  cases_active: number;
+}
+
+export interface BillingReportByType {
+  case_type: string;
+  total: number;
+  active: number;
+  closed: number;
+}
+
+export interface BillingReport {
+  total_revenue: number;
+  outstanding: number;
+  billable_hours: number;
+  non_billable_hours: number;
+  monthly: BillingReportMonthly[];
+  by_type: BillingReportByType[];
+}
+
+export interface CaseReportTotal {
+  opened: number;
+  closed: number;
+  active: number;
+}
+
+export interface CaseReportMonthly {
+  period: string;
+  opened: number;
+  closed: number;
+  active: number;
+}
+
+export interface CaseReportByType {
+  case_type: string;
+  count: number;
+  active: number;
+  closed: number;
+  total: number;
+}
+
+export interface CaseReportByCourt {
+  court: string;
+  count: number;
+}
+
+export interface CaseReport {
+  opened: number;
+  closed: number;
+  active: number;
+  total: CaseReportTotal;
+  monthly: CaseReportMonthly[];
+  by_type: CaseReportByType[];
+  by_court: CaseReportByCourt[];
+}
+
+export interface DeadlineReportTotal {
+  total: number;
+  met: number;
+  missed: number;
+  compliance_rate: number;
+}
+
+export interface DeadlineReportMonthly {
+  period: string;
+  total: number;
+  met: number;
+  missed: number;
+  pending: number;
+  compliance_rate: number;
+}
+
+export interface MissedDeadline {
+  id: string;
+  title: string;
+  case_id: string;
+  case_number: string;
+  case_title: string;
+  due_date: string;
+  days_overdue: number;
+}
+
+export interface DeadlineReport {
+  compliance_rate: number;
+  met: number;
+  total: DeadlineReportTotal;
+  monthly: DeadlineReportMonthly[];
+  missed: MissedDeadline[];
+  by_case: Record<string, number>;
+}
+
+export interface WorkloadUser {
+  name: string;
+  user_id: string;
+  hours: number;
+  utilization: number;
+  active_cases: number;
+  deadlines: number;
+  overdue: number;
+  completed: number;
+}
+
+export interface WorkloadReport {
+  users: WorkloadUser[];
+}
+
+// Document Templates
+
+export interface DocumentTemplate {
+  id: string;
+  tenant_id: string;
+  name: string;
+  description?: string;
+  category: string;
+  content: string;
+  variables: string[];
+  is_system: boolean;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface RenderResponse {
+  rendered_content: string;
+  content: string;
+  name: string;
+}
+
+// Notifications
+
+export interface Notification {
+  id: string;
+  tenant_id: string;
+  type: string;
+  entity_type: string;
+  entity_id: string;
+  title: string;
+  body: string;
+  sent_at?: string;
+  read_at?: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface NotificationPreferences {
+  deadline_reminder_days: number[];
+  email_enabled: boolean;
+  daily_digest: boolean;
+}
+
+export interface NotificationListResponse {
+  notifications: Notification[];
+  data: Notification[];
+  total: number;
+  unread_count: number;
+}
+
+// Audit Log
+
+export interface AuditLogEntry {
+  id: string;
+  tenant_id: string;
+  user_id: string;
+  action: string;
+  entity_type: string;
+  entity_id: string;
+  old_values?: Record<string, unknown>;
+  new_values?: Record<string, unknown>;
+  ip_address?: string;
+  created_at: string;
+}
+
+export interface AuditLogResponse {
+  entries: AuditLogEntry[];
+  total: number;
+}