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v4.1.0: DMS email documents, category-specific Nachweis linking, version system
- Save cover email body as DMS document with new 'email' context type
- Show email body separately from attachments in email detail view
- Add per-category DMS document assignment in quarterly confirmation
  (Studiennachweis, Einkommenssituation, Vermögenssituation)
- Add VERSION file and context processor for automatic version display
- Add MCP server, agent system, import/export, and new migrations
- Update compose files and production environment template

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-15 18:48:52 +00:00

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"""
AI Agent Models: AgentConfig (Singleton), ChatSession, ChatMessage.
"""
import uuid
from django.contrib.auth.models import User
from django.db import models
DEFAULT_SYSTEM_PROMPT = """Du bist RentmeisterAI, der KI-Assistent der van Hees-Theyssen-Vogel'schen Stiftung.
Du hast Zugriff auf die Stiftungsdatenbank und kannst Informationen zu Destinatären, Ländereien, \
Finanzen, Förderungen und weiteren Stiftungsdaten abrufen.
Regeln:
- Antworte stets auf Deutsch, präzise und sachlich.
- Schütze personenbezogene Daten gib keine unnötigen Details heraus.
- Du kannst keine Daten ändern, nur lesen.
- Bei rechtlichen oder steuerlichen Fragen weise auf Fachberatung hin.
- Wenn du dir unsicher bist, sage das klar.
"""
class AgentConfig(models.Model):
"""Singleton-Konfiguration für den AI Agent."""
PROVIDER_CHOICES = [
("ollama", "Ollama (lokal)"),
("openai", "OpenAI"),
("anthropic", "Anthropic"),
]
provider = models.CharField(
max_length=20,
choices=PROVIDER_CHOICES,
default="ollama",
verbose_name="LLM-Provider",
)
model_name = models.CharField(
max_length=100,
default="qwen2.5:3b",
verbose_name="Modell-Name",
)
ollama_url = models.CharField(
max_length=255,
default="http://ollama:11434",
verbose_name="Ollama-URL",
)
openai_api_key = models.CharField(
max_length=255,
blank=True,
verbose_name="OpenAI API-Key",
help_text="Nur erforderlich wenn Provider = OpenAI",
)
anthropic_api_key = models.CharField(
max_length=255,
blank=True,
verbose_name="Anthropic API-Key",
help_text="Nur erforderlich wenn Provider = Anthropic",
)
system_prompt = models.TextField(
default=DEFAULT_SYSTEM_PROMPT,
verbose_name="System-Prompt",
)
allow_write = models.BooleanField(
default=False,
verbose_name="Schreib-Tools erlaubt",
help_text="Achtung: Schreib-Zugriff auf Stiftungsdaten aktivieren",
)
chat_retention_days = models.IntegerField(
default=30,
verbose_name="Chat-Verlauf Aufbewahrung (Tage)",
)
class Meta:
verbose_name = "Agent-Konfiguration"
verbose_name_plural = "Agent-Konfiguration"
def __str__(self):
return f"Agent Config ({self.get_provider_display()} / {self.model_name})"
def save(self, *args, **kwargs):
# Singleton: always use pk=1
self.pk = 1
super().save(*args, **kwargs)
def delete(self, *args, **kwargs):
pass # Singleton cannot be deleted
@classmethod
def get_config(cls):
config, _ = cls.objects.get_or_create(pk=1)
return config
class ChatSession(models.Model):
"""Chat-Sitzung eines Benutzers mit dem AI Agent."""
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
user = models.ForeignKey(
User,
on_delete=models.CASCADE,
related_name="agent_sessions",
verbose_name="Benutzer",
)
title = models.CharField(
max_length=200,
blank=True,
verbose_name="Titel",
help_text="Automatisch aus erster Nachricht generiert",
)
created_at = models.DateTimeField(auto_now_add=True, verbose_name="Erstellt")
updated_at = models.DateTimeField(auto_now=True, verbose_name="Zuletzt aktiv")
class Meta:
verbose_name = "Chat-Sitzung"
verbose_name_plural = "Chat-Sitzungen"
ordering = ["-updated_at"]
def __str__(self):
return f"{self.user.username} {self.title or str(self.id)[:8]} ({self.created_at.strftime('%d.%m.%Y')})"
def message_count(self):
return self.messages.count()
class ChatMessage(models.Model):
"""Einzelne Nachricht in einer Chat-Sitzung."""
ROLE_CHOICES = [
("user", "Benutzer"),
("assistant", "Assistent"),
("tool", "Tool-Ergebnis"),
]
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
session = models.ForeignKey(
ChatSession,
on_delete=models.CASCADE,
related_name="messages",
verbose_name="Sitzung",
)
role = models.CharField(
max_length=20,
choices=ROLE_CHOICES,
verbose_name="Rolle",
)
content = models.TextField(verbose_name="Inhalt")
tool_name = models.CharField(
max_length=100,
blank=True,
verbose_name="Tool-Name",
)
tool_call_id = models.CharField(
max_length=100,
blank=True,
verbose_name="Tool-Call-ID",
)
created_at = models.DateTimeField(auto_now_add=True, verbose_name="Erstellt")
class Meta:
verbose_name = "Chat-Nachricht"
verbose_name_plural = "Chat-Nachrichten"
ordering = ["created_at"]
def __str__(self):
return f"[{self.role}] {self.content[:60]}"