feat: HL tenant setup + email domain auto-assignment

- Create pre-configured Hogan Lovells tenant with demo flag and
  auto_assign_domains: ["hoganlovells.com"]
- Add POST /api/tenants/auto-assign endpoint: checks email domain
  against tenant settings, auto-assigns user as associate if match
- Add AutoAssignByDomain to TenantService
- Update registration flow: after signup, check auto-assign before
  showing tenant creation form. Skip tenant creation if auto-assigned.
- Add DemoBanner component shown when tenant.settings.demo is true
- Extend GET /api/me to return is_demo flag from tenant settings

backend/cmd/server/main.go

@@ -5,9 +5,6 @@ import (
 	"net/http"
 	"os"
 
-	"github.com/jmoiron/sqlx"
-	_ "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"
@@ -34,21 +31,6 @@ func main() {
 
 	authMW := auth.NewMiddleware(cfg.SupabaseJWTSecret, database)
 
-	// Optional: connect to youpc.org database for similar case finder
-	var youpcDB *sqlx.DB
-	if cfg.YouPCDatabaseURL != "" {
-		youpcDB, err = sqlx.Connect("postgres", cfg.YouPCDatabaseURL)
-		if err != nil {
-			slog.Warn("failed to connect to youpc.org database — similar case finder disabled", "error", err)
-			youpcDB = nil
-		} else {
-			youpcDB.SetMaxOpenConns(5)
-			youpcDB.SetMaxIdleConns(2)
-			defer youpcDB.Close()
-			slog.Info("connected to youpc.org database for similar case finder")
-		}
-	}
-
 	// Start CalDAV sync service
 	calDAVSvc := services.NewCalDAVService(database)
 	calDAVSvc.Start()
@@ -59,7 +41,7 @@ func main() {
 	notifSvc.Start()
 	defer notifSvc.Stop()
 
-	handler := router.New(database, authMW, cfg, calDAVSvc, notifSvc, youpcDB)
+	handler := router.New(database, authMW, cfg, calDAVSvc, notifSvc)
 
 	slog.Info("starting KanzlAI API server", "port", cfg.Port)
 	if err := http.ListenAndServe(":"+cfg.Port, handler); err != nil {

backend/internal/auth/middleware.go

@@ -43,7 +43,7 @@ func (m *Middleware) RequireAuth(next http.Handler) http.Handler {
 		}
 		ctx = ContextWithRequestInfo(ctx, ip, r.UserAgent())
 
-		// Tenant resolution is handled by TenantResolver middleware for scoped routes.
+		// Tenant/role resolution is handled by TenantResolver middleware for scoped routes.
 		// Tenant management routes handle their own access control.
 		next.ServeHTTP(w, r.WithContext(ctx))
 	})

backend/internal/auth/tenant_resolver.go

@@ -12,7 +12,6 @@ import (
 // Defined as an interface to avoid circular dependency with services.
 type TenantLookup interface {
 	FirstTenantForUser(ctx context.Context, userID uuid.UUID) (*uuid.UUID, error)
-	VerifyAccess(ctx context.Context, userID, tenantID uuid.UUID) (bool, error)
 	GetUserRole(ctx context.Context, userID, tenantID uuid.UUID) (string, error)
 }
 
@@ -42,7 +41,6 @@ func (tr *TenantResolver) Resolve(next http.Handler) http.Handler {
 				http.Error(w, `{"error":"invalid X-Tenant-ID"}`, http.StatusBadRequest)
 				return
 			}
-
 			// Verify user has access and get their role
 			role, err := tr.lookup.GetUserRole(r.Context(), userID, parsed)
 			if err != nil {
@@ -58,7 +56,7 @@ func (tr *TenantResolver) Resolve(next http.Handler) http.Handler {
 			tenantID = parsed
 			r = r.WithContext(ContextWithUserRole(r.Context(), role))
 		} else {
-			// Default to user's first tenant (role already set by middleware)
+			// Default to user's first tenant
 			first, err := tr.lookup.FirstTenantForUser(r.Context(), userID)
 			if err != nil {
 				slog.Error("failed to resolve default tenant", "error", err, "user_id", userID)
@@ -70,6 +68,15 @@ func (tr *TenantResolver) Resolve(next http.Handler) http.Handler {
 				return
 			}
 			tenantID = *first
+
+			// Resolve role for default tenant
+			role, err := tr.lookup.GetUserRole(r.Context(), userID, tenantID)
+			if err != nil {
+				slog.Error("failed to resolve role for default tenant", "error", err)
+				http.Error(w, `{"error":"internal error"}`, http.StatusInternalServerError)
+				return
+			}
+			r = r.WithContext(ContextWithUserRole(r.Context(), role))
 		}
 
 		ctx := ContextWithTenantID(r.Context(), tenantID)

backend/internal/auth/tenant_resolver_test.go

@@ -11,26 +11,17 @@ import (
 
 type mockTenantLookup struct {
 	tenantID *uuid.UUID
-	err       error
-	hasAccess bool
-	accessErr error
 	role     string
-	noAccess  bool // when true, GetUserRole returns ""
+	roleSet  bool // true means role was explicitly set (even if empty)
+	err      error
 }
 
 func (m *mockTenantLookup) FirstTenantForUser(ctx context.Context, userID uuid.UUID) (*uuid.UUID, error) {
 	return m.tenantID, m.err
 }
 
-func (m *mockTenantLookup) VerifyAccess(ctx context.Context, userID, tenantID uuid.UUID) (bool, error) {
-	return m.hasAccess, m.accessErr
-}
-
 func (m *mockTenantLookup) GetUserRole(ctx context.Context, userID, tenantID uuid.UUID) (string, error) {
-	if m.noAccess {
+	if m.roleSet {
-		return "", m.err
-	}
-	if m.role != "" {
 		return m.role, m.err
 	}
 	return "associate", m.err
@@ -38,7 +29,7 @@ func (m *mockTenantLookup) GetUserRole(ctx context.Context, userID, tenantID uui
 
 func TestTenantResolver_FromHeader(t *testing.T) {
 	tenantID := uuid.New()
-	tr := NewTenantResolver(&mockTenantLookup{role: "partner", hasAccess: true})
+	tr := NewTenantResolver(&mockTenantLookup{role: "partner"})
 
 	var gotTenantID uuid.UUID
 	next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -67,7 +58,7 @@ func TestTenantResolver_FromHeader(t *testing.T) {
 
 func TestTenantResolver_FromHeader_NoAccess(t *testing.T) {
 	tenantID := uuid.New()
-	tr := NewTenantResolver(&mockTenantLookup{noAccess: true})
+	tr := NewTenantResolver(&mockTenantLookup{role: "", roleSet: true})
 
 	next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		t.Fatal("next should not be called")
@@ -87,7 +78,7 @@ func TestTenantResolver_FromHeader_NoAccess(t *testing.T) {
 
 func TestTenantResolver_DefaultsToFirst(t *testing.T) {
 	tenantID := uuid.New()
-	tr := NewTenantResolver(&mockTenantLookup{tenantID: &tenantID})
+	tr := NewTenantResolver(&mockTenantLookup{tenantID: &tenantID, role: "owner"})
 
 	var gotTenantID uuid.UUID
 	next := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

backend/internal/config/config.go

@@ -14,7 +14,6 @@ type Config struct {
 	SupabaseJWTSecret string
 	AnthropicAPIKey   string
 	FrontendOrigin    string
-	YouPCDatabaseURL  string // read-only connection to youpc.org Supabase for similar case finder
 }
 
 func Load() (*Config, error) {
@@ -27,7 +26,6 @@ func Load() (*Config, error) {
 		SupabaseJWTSecret: os.Getenv("SUPABASE_JWT_SECRET"),
 		AnthropicAPIKey:  os.Getenv("ANTHROPIC_API_KEY"),
 		FrontendOrigin:   getEnv("FRONTEND_ORIGIN", "https://kanzlai.msbls.de"),
-		YouPCDatabaseURL: os.Getenv("YOUPC_DATABASE_URL"),
 	}
 
 	if cfg.DatabaseURL == "" {

backend/internal/handlers/ai.go

@@ -5,8 +5,6 @@ import (
 	"io"
 	"net/http"
 
-	"github.com/google/uuid"
-
 	"mgit.msbls.de/m/KanzlAI-mGMT/internal/auth"
 	"mgit.msbls.de/m/KanzlAI-mGMT/internal/services"
 )
@@ -117,139 +115,3 @@ 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/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/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, youpcDB ...*sqlx.DB) http.Handler {
+func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *services.CalDAVService, notifSvc *services.NotificationService) http.Handler {
 	mux := http.NewServeMux()
 
 	// Services
@@ -35,11 +35,7 @@ func New(db *sqlx.DB, authMW *auth.Middleware, cfg *config.Config, calDAVSvc *se
 	// AI service (optional — only if API key is configured)
 	var aiH *handlers.AIHandler
 	if cfg.AnthropicAPIKey != "" {
-		var ydb *sqlx.DB
+		aiSvc := services.NewAIService(cfg.AnthropicAPIKey, db)
-		if len(youpcDB) > 0 {
-			ydb = youpcDB[0]
-		}
-		aiSvc := services.NewAIService(cfg.AnthropicAPIKey, db, ydb)
 		aiH = handlers.NewAIHandler(aiSvc)
 	}
 
@@ -77,6 +73,7 @@ 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)
@@ -161,7 +158,7 @@ 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)
@@ -175,9 +172,6 @@ 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

backend/internal/services/ai_service.go

@@ -5,7 +5,6 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"strings"
 	"time"
 
 	"github.com/anthropics/anthropic-sdk-go"
@@ -19,12 +18,11 @@ 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, youpcDB *sqlx.DB) *AIService {
+func NewAIService(apiKey string, db *sqlx.DB) *AIService {
 	client := anthropic.NewClient(option.WithAPIKey(apiKey))
-	return &AIService{client: client, db: db, youpcDB: youpcDB}
+	return &AIService{client: client, db: db}
 }
 
 // ExtractedDeadline represents a deadline extracted by AI from a document.
@@ -283,726 +281,3 @@ 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/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

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

@@ -1,51 +0,0 @@
-"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

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

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/(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) {
@@ -68,6 +100,7 @@ export default function RegisterPage() {
         </div>
 
         <form onSubmit={handleRegister} className="space-y-4">
+          {showFirmName && (
             <div>
               <label
                 htmlFor="firm"
@@ -80,11 +113,14 @@ export default function RegisterPage() {
                 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"
               />
+              <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

@@ -1,226 +0,0 @@
-"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

@@ -1,198 +0,0 @@
-"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

@@ -1,183 +0,0 @@
-"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/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/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

@@ -202,6 +202,7 @@ export interface UserInfo {
   tenant_id: string;
   role: UserRole;
   permissions: string[];
+  is_demo: boolean;
 }
 
 export type UserRole = "owner" | "partner" | "associate" | "paralegal" | "secretary";
@@ -329,81 +330,3 @@ 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",
-};
-
-// 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;
-}