Fix React hook anti-patterns, incorrect mock paths, and unused code

- Replace useState+useEffect sync pattern with useMemo in
  EdgeSettingsPanel.tsx to eliminate cascading re-renders
- Remove redundant draft state in NodeSettingsPanel.tsx and use
  store data directly, eliminating useEffect sync loop
- Fix mock paths in test_tools.py: patch tavily.TavilyClient and
  pypdf.PdfReader at their source modules (lazy imports)
- Remove unused variable assignment in routes.py (god mode reject)
- Remove unused node_lookup dicts in dynamic_graph_builder.py
- Remove unused imports across test files (Blueprint, CouncilState,
  pytest, llm assignments)
- Remove unused CouncilBlueprint type import in types.test.ts
- Run npm audit fix to resolve moderate vulnerability

All 107 backend tests and 26 frontend tests pass. Ruff, ESLint,
and TypeScript checks are clean.

https://claude.ai/code/session_01XqzyT6fhS8sUe9P5fCmuVU

frontend/app/__tests__/types.test.ts

@@ -1,7 +1,6 @@
 import { describe, it, expect } from "vitest";
 import type {
   AgentNodeData,
-  CouncilBlueprint,
   ExecutionMode,
   GodModeAction,
   GodModeState,

frontend/app/components/panels/EdgeSettingsPanel.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useEffect, useState } from "react";
+import { useMemo } from "react";
 import { X, ArrowRight } from "lucide-react";
 import { EdgeType } from "@/app/types/council";
 import { useCouncilStore } from "@/app/store/council-store";
@@ -15,15 +15,15 @@ export function EdgeSettingsPanel() {
 
   const edge = edges.find((e) => e.id === selectedEdgeId);
 
-  const [edgeType, setEdgeType] = useState<EdgeType>("linear");
-  const [condition, setCondition] = useState("");
-
-  useEffect(() => {
-    if (edge) {
-      setEdgeType((edge.data?.type as EdgeType) ?? "linear");
-      setCondition((edge.data?.condition as string) ?? "");
-    }
-  }, [selectedEdgeId, edge]);
+  // Derive state directly from the store instead of syncing via useEffect
+  const edgeType = useMemo(
+    () => (edge?.data?.type as EdgeType) ?? "linear",
+    [edge?.data?.type]
+  );
+  const condition = useMemo(
+    () => (edge?.data?.condition as string) ?? "",
+    [edge?.data?.condition]
+  );
 
   if (!selectedEdgeId || !edge) return null;
 
@@ -31,12 +31,10 @@ export function EdgeSettingsPanel() {
   const targetNode = nodes.find((n) => n.id === edge.target);
 
   const handleTypeChange = (newType: EdgeType) => {
-    setEdgeType(newType);
     updateEdgeData(selectedEdgeId, newType, newType === "conditional" ? condition : undefined);
   };
 
   const handleConditionChange = (value: string) => {
-    setCondition(value);
     updateEdgeData(selectedEdgeId, edgeType, value);
   };
 

frontend/app/components/panels/NodeSettingsPanel.tsx

@@ -1,6 +1,5 @@
 "use client";
 
-import { useEffect, useState } from "react";
 import { X, Bot } from "lucide-react";
 import { AgentNodeData, LLMModel } from "@/app/types/council";
 import { useCouncilStore } from "@/app/store/council-store";
@@ -21,18 +20,9 @@ export function NodeSettingsPanel() {
   const node = nodes.find((n) => n.id === selectedNodeId);
   const data = node?.data as AgentNodeData | undefined;
 
-  // Local draft to avoid re-renders on every keystroke
-  const [draft, setDraft] = useState<AgentNodeData | null>(null);
-
-  useEffect(() => {
-    setDraft(data ?? null);
-  }, [selectedNodeId, data]);
-
-  if (!selectedNodeId || !draft) return null;
+  if (!selectedNodeId || !data) return null;
 
   const commit = (partial: Partial<AgentNodeData>) => {
-    const updated = { ...draft, ...partial };
-    setDraft(updated);
     updateNodeData(selectedNodeId, partial);
   };
 
@@ -57,7 +47,7 @@ export function NodeSettingsPanel() {
         <label className="text-xs font-medium text-slate-500">Name</label>
         <input
           type="text"
-          value={draft.label}
+          value={data.label}
           onChange={(e) => commit({ label: e.target.value })}
           className="rounded-lg border border-slate-200 px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-indigo-300"
         />
@@ -69,7 +59,7 @@ export function NodeSettingsPanel() {
           System-Prompt
         </label>
         <textarea
-          value={draft.systemPrompt}
+          value={data.systemPrompt}
           onChange={(e) => commit({ systemPrompt: e.target.value })}
           rows={6}
           placeholder="Beschreibe die Rolle und das Verhalten dieses Agenten..."
@@ -81,7 +71,7 @@ export function NodeSettingsPanel() {
       <div className="flex flex-col gap-1">
         <label className="text-xs font-medium text-slate-500">Modell</label>
         <select
-          value={draft.model}
+          value={data.model}
           onChange={(e) => commit({ model: e.target.value as LLMModel })}
           className="rounded-lg border border-slate-200 px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-indigo-300"
         >
@@ -100,9 +90,9 @@ export function NodeSettingsPanel() {
         <label className="flex items-center gap-3 cursor-pointer">
           <input
             type="checkbox"
-            checked={draft.tools.webSearch}
+            checked={data.tools.webSearch}
             onChange={(e) =>
-              commit({ tools: { ...draft.tools, webSearch: e.target.checked } })
+              commit({ tools: { ...data.tools, webSearch: e.target.checked } })
             }
             className="h-4 w-4 rounded border-slate-300 text-indigo-600 focus:ring-indigo-300"
           />
@@ -112,9 +102,9 @@ export function NodeSettingsPanel() {
         <label className="flex items-center gap-3 cursor-pointer">
           <input
             type="checkbox"
-            checked={draft.tools.pdfReader}
+            checked={data.tools.pdfReader}
             onChange={(e) =>
-              commit({ tools: { ...draft.tools, pdfReader: e.target.checked } })
+              commit({ tools: { ...data.tools, pdfReader: e.target.checked } })
             }
             className="h-4 w-4 rounded border-slate-300 text-indigo-600 focus:ring-indigo-300"
           />