fix(mcp): configure mcp_client on project load and switch

- Add _configure_mcp_for_project() helper method
- Call it at end of _load_active_project() to configure mcp_client on startup
- _switch_project() calls it after _refresh_from_project()
- This ensures mcp_client._base_dirs is populated before GUI buttons try to read files

src/app_controller.py

@@ -1521,24 +1521,30 @@ class AppController:
   if self.active_project_path and Path(self.active_project_path).exists():
    try:
     self.project = project_manager.load_project(self.active_project_path)
-    return
    except Exception as e:
     print(f"Failed to load project {self.active_project_path}: {e}")
-  for pp in self.project_paths:
-   if Path(pp).exists():
-    try:
-     self.project = project_manager.load_project(pp)
-     self.active_project_path = pp
-     return
-    except Exception:
-     continue
-  self.project = project_manager.migrate_from_legacy_config(self.config)
-  name = self.project.get("project", {}).get("name", "project")
-  fallback_path = f"{name}.toml"
-  project_manager.save_project(self.project, fallback_path)
-  self.active_project_path = fallback_path
-  if fallback_path not in self.project_paths:
-   self.project_paths.append(fallback_path)
+    self.project = project_manager.migrate_from_legacy_config(self.config)
+    self.active_project_path = ""
+  else:
+   self.project = project_manager.migrate_from_legacy_config(self.config)
+   self.active_project_path = ""
+  if not self.active_project_path:
+   for pp in self.project_paths:
+    if Path(pp).exists():
+     try:
+      self.project = project_manager.load_project(pp)
+      self.active_project_path = pp
+      break
+     except Exception:
+      continue
+  if not self.active_project_path:
+   name = self.project.get("project", {}).get("name", "project")
+   fallback_path = f"{name}.toml"
+   project_manager.save_project(self.project, fallback_path)
+   self.active_project_path = fallback_path
+   if fallback_path not in self.project_paths:
+    self.project_paths.append(fallback_path)
+  self._configure_mcp_for_project()
 
  def _prune_old_logs(self) -> None:
   """Asynchronously prunes old insignificant logs on startup."""
@@ -2327,6 +2333,13 @@ class AppController:
    self._create_discussion(nm)
    self.ui_disc_new_name_input = ""
 
+ def _configure_mcp_for_project(self) -> None:
+  if not self.active_project_path:
+   return
+  project_root = Path(self.active_project_path).parent
+  file_items_as_dicts = [{"path": f.path if hasattr(f, "path") else str(f)} for f in self.files]
+  mcp_client.configure(file_items_as_dicts, [str(project_root)])
+
  def _switch_project(self, path: str) -> None:
   """
     [C: src/gui_2.py:App._render_projects_panel]