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

frontend/app/store/council-store.ts

@@ -1,7 +1,7 @@
 // Zustand store for canvas state and council run state
 import { create } from "zustand";
 import { Node, Edge, addEdge, applyNodeChanges, applyEdgeChanges, NodeChange, EdgeChange, Connection } from "@xyflow/react";
-import { AgentNodeData, CouncilRun, LLMModel } from "@/app/types/council";
+import { AgentNodeData, CouncilRun, EdgeType } from "@/app/types/council";
 import { nanoid } from "nanoid";
 
 interface CouncilStore {
@@ -9,6 +9,7 @@ interface CouncilStore {
   nodes: Node<AgentNodeData>[];
   edges: Edge[];
   selectedNodeId: string | null;
+  selectedEdgeId: string | null;
   councilName: string;
 
   // Execution
@@ -22,6 +23,8 @@ interface CouncilStore {
   addAgentNode: (position: { x: number; y: number }) => void;
   updateNodeData: (nodeId: string, data: Partial<AgentNodeData>) => void;
   selectNode: (nodeId: string | null) => void;
+  selectEdge: (edgeId: string | null) => void;
+  updateEdgeData: (edgeId: string, type: EdgeType, condition?: string) => void;
   setCouncilName: (name: string) => void;
   setNodes: (nodes: Node<AgentNodeData>[]) => void;
   setEdges: (edges: Edge[]) => void;
@@ -47,6 +50,7 @@ export const useCouncilStore = create<CouncilStore>((set, get) => ({
   nodes: [],
   edges: [],
   selectedNodeId: null,
+  selectedEdgeId: null,
   councilName: "Mein Rat",
   activeRun: null,
   activeNodeId: null,
@@ -88,7 +92,24 @@ export const useCouncilStore = create<CouncilStore>((set, get) => ({
       ),
     })),
 
-  selectNode: (nodeId) => set({ selectedNodeId: nodeId }),
+  selectNode: (nodeId) => set({ selectedNodeId: nodeId, selectedEdgeId: null }),
+
+  selectEdge: (edgeId) => set({ selectedEdgeId: edgeId, selectedNodeId: null }),
+
+  updateEdgeData: (edgeId, type, condition) =>
+    set((state) => ({
+      edges: state.edges.map((e) =>
+        e.id === edgeId
+          ? {
+              ...e,
+              type: type === "conditional" ? "conditionalEdge" : "default",
+              data: { ...e.data, type, condition: condition ?? "" },
+              label: type === "conditional" ? (condition || "?") : undefined,
+              animated: type === "conditional",
+            }
+          : e
+      ),
+    })),
 
   setCouncilName: (name) => set({ councilName: name }),
 
@@ -122,4 +143,3 @@ export const useCouncilStore = create<CouncilStore>((set, get) => ({
       })),
     })),
 }));
-