refactor: streamline Electron API integration and enhance UI components

- Removed unused Electron API methods and simplified the main process.
- Introduced a new workspace picker modal for improved project selection.
- Enhanced error handling for authentication issues across various components.
- Updated UI styles for dark mode support and added new CSS variables.
- Refactored session management to utilize a centralized API access method.
- Added server routes for workspace management, including directory listing and configuration checks.

apps/server/data/sessions-metadata.json

@@ -0,0 +1,10 @@
+{
+  "msg_1765523524581_xhk6u45v2": {
+    "id": "msg_1765523524581_xhk6u45v2",
+    "name": "Bright Agent 2",
+    "projectPath": "/Users/webdevcody/Workspace/automaker",
+    "workingDirectory": "/Users/webdevcody/Workspace/automaker",
+    "createdAt": "2025-12-12T07:12:04.582Z",
+    "updatedAt": "2025-12-12T07:12:14.382Z"
+  }
+}