feat(automaker): enhance feature management and UI components

- Updated `.gitignore` to include agent context files and user-uploaded images for better organization.
- Added "Uncategorized" category to `categories.json` for improved feature classification.
- Populated `feature_list.json` with new features, including detailed descriptions and image attachments for better context.
- Changed application icon to `icon_gold.png` for a refreshed look.
- Enhanced `AutoModeService` to support max concurrency and periodic checks, improving feature execution management.
- Updated image handling in `DescriptionImageDropZone` to save images in the project directory.
- Improved UI components with better styling and responsiveness, including drag-and-drop functionality for project management.

This update significantly enhances the feature management process and user experience within the application.

app/electron/preload.js

@@ -86,8 +86,8 @@ contextBridge.exposeInMainWorld("electronAPI", {
   // Auto Mode API
   autoMode: {
     // Start auto mode
-    start: (projectPath) =>
-      ipcRenderer.invoke("auto-mode:start", { projectPath }),
+    start: (projectPath, maxConcurrency) =>
+      ipcRenderer.invoke("auto-mode:start", { projectPath, maxConcurrency }),
 
     // Stop auto mode
     stop: () => ipcRenderer.invoke("auto-mode:stop"),