chore: increase timeout for API requests in AIPlanner to 600 seconds and add local settings for Claude permissions

.claude/settings.local.json

@@ -0,0 +1,7 @@
+{
+  "permissions": {
+    "allow": [
+      "WebFetch(domain:github.com)"
+    ]
+  }
+}

ai_planner.py

@@ -210,7 +210,7 @@ class AIPlanner:
             resp = httpx.post(
                 f"{OLLAMA_HOST}/api/chat",
                 json=payload,
-                timeout=300.0,
+                timeout=600.0,
             )
             resp.raise_for_status()
             data = resp.json()