Implement Phase 4: tools, God Mode, and missing features

Backend:
- Add Tavily web search tool wrapper (tools/web_search.py)
- Add PDF reader + ChromaDB vector store tool (tools/pdf_reader.py)
- Bind tools to LLM calls via .bind_tools() in dynamic_graph_builder
- Implement God Mode using LangGraph interrupt_before + MemorySaver
- Add approve/reject/modify API endpoints for God Mode
- Add PDF upload endpoint with ingestion pipeline
- Add persistent run history (CouncilRun model + run_service + API)
- Add Alembic migration for council_runs table
- Enhance WebSocket to emit run_paused and run_resumed events
- Add tests for tools, God Mode, and run history

Frontend:
- Add God Mode approval UI (GodModePanel component)
- Add Auto-Pilot / God Mode toggle in Konferenzzimmer
- Add functional PDF upload handler
- Add Conditional Edge editor (EdgeSettingsPanel component)
- Add edge click selection in ArchitectCanvas
- Update Zustand store with edge selection and update actions
- Update types for God Mode, execution modes, and WS events
- Update API client with God Mode, PDF upload, and blueprint run endpoints
- Update WebSocket hook for paused/resumed events
- Add Vitest config and frontend tests (store, parser, types, API)

https://claude.ai/code/session_017U6idFgaqnYTXzPxA7mxMv

backend/main.py

@@ -5,16 +5,21 @@ Start the server:
     uvicorn main:app --reload --port 8000
 
 API Overview:
-    POST   /api/councils/              — Create a blueprint
-    GET    /api/councils/              — List all blueprints
-    GET    /api/councils/{id}          — Get specific blueprint
-    PUT    /api/councils/{id}          — Update a blueprint
-    DELETE /api/councils/{id}          — Delete a blueprint
-    POST   /api/councils/run           — Start a run (Phase 1 hard-coded graph)
-    POST   /api/councils/{id}/run      — Start a run from a blueprint (Phase 3)
-    GET    /api/councils/run/{run_id}  — Poll run status/result
-    GET    /api/health                 — Health check
-    WS     /ws/council/{run_id}        — Real-time agent status events
+    POST   /api/councils/                     — Create a blueprint
+    GET    /api/councils/                     — List all blueprints
+    GET    /api/councils/{id}                 — Get specific blueprint
+    PUT    /api/councils/{id}                 — Update a blueprint
+    DELETE /api/councils/{id}                 — Delete a blueprint
+    POST   /api/councils/run                  — Start a run (Phase 1)
+    POST   /api/councils/{id}/run             — Start a run from a blueprint
+    GET    /api/councils/run/{run_id}         — Poll run status/result
+    POST   /api/councils/run/{run_id}/approve — God Mode: approve/reject/modify
+    GET    /api/councils/run/{run_id}/state   — God Mode: paused state
+    POST   /api/councils/upload-pdf           — Upload PDF for ingestion
+    GET    /api/runs/                         — List run history
+    GET    /api/runs/{run_id}                 — Get historical run detail
+    GET    /api/health                        — Health check
+    WS     /ws/council/{run_id}               — Real-time agent status events
 """
 
 from contextlib import asynccontextmanager
@@ -23,6 +28,7 @@ from fastapi.middleware.cors import CORSMiddleware
 
 from api.routes import router
 from api.blueprint_routes import blueprint_router
+from api.run_history_routes import run_history_router
 from api.websocket import ws_router
 from database import init_db, close_db
 
@@ -45,7 +51,7 @@ app = FastAPI(
         "Orchestrates LangGraph council runs and streams real-time agent "
         "status via WebSockets."
     ),
-    version="0.2.0",
+    version="0.3.0",
     lifespan=lifespan,
 )
 
@@ -61,6 +67,7 @@ app.add_middleware(
 # Mount REST routes under /api prefix
 app.include_router(router, prefix="/api")
 app.include_router(blueprint_router, prefix="/api")
+app.include_router(run_history_router, prefix="/api")
 
 # Mount WebSocket routes (no prefix — path is /ws/council/{run_id})
 app.include_router(ws_router)