Add Docker production build and update README

- Multi-stage Dockerfile: builds frontend, packages with Python backend
- admin.py serves frontend/dist as StaticFiles in production
- docker-entrypoint.sh runs proxy + admin-api, exits cleanly if either dies
- .dockerignore excludes .env, venv, tests, node_modules
- Split requirements.txt (prod) / requirements-dev.txt (dev+test)
- aiofiles added for StaticFiles support
- start.sh: port checks before startup, venv auto-activation, trap cleanup
- vite.config.js: clearScreen disabled
- README rewritten to reflect current architecture

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/admin.py

@@ -1,8 +1,10 @@
 import os
 import secrets
 import httpx
+from pathlib import Path
 from fastapi import FastAPI, Depends, HTTPException, Request
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.staticfiles import StaticFiles
 from sqlalchemy.orm import Session
 from database import get_db
 import crud, schemas
@@ -119,3 +121,8 @@ async def get_ollama_models(db: Session = Depends(get_db), _ = Depends(require_a
     except Exception:
         models = []
     return {"models": models}
+
+# Statisches Frontend ausliefern (nur im Produktivbetrieb, wenn dist/ existiert)
+_dist = Path(__file__).parent.parent / "frontend" / "dist"
+if _dist.exists():
+    app.mount("/", StaticFiles(directory=_dist, html=True), name="frontend")

backend/requirements-dev.txt

@@ -0,0 +1,4 @@
+-r requirements.txt
+pytest==8.3.4
+pytest-asyncio==0.25.1
+pytest-cov==6.0.0

backend/requirements.txt

@@ -1,5 +1,6 @@
 fastapi==0.115.6
 uvicorn[standard]==0.34.0
+aiofiles==24.1.0
 httpx==0.28.1
 sqlalchemy==2.0.36
 alembic==1.14.0
@@ -9,6 +10,3 @@ python-jose[cryptography]==3.3.0
 bcrypt==5.0.0
 tiktoken==0.9.0
 python-dotenv==1.0.1
-pytest==8.3.4
-pytest-asyncio==0.25.1
-pytest-cov==6.0.0