feat(worktree): enhance worktree management and git diff functionality

- Integrated git worktree isolation for feature execution, allowing agents to work in isolated branches.
- Added GitDiffPanel component to visualize changes in both worktree and main project contexts.
- Updated AutoModeService and IPC handlers to support worktree settings.
- Implemented Git API for non-worktree operations, enabling file diff retrieval for the main project.
- Enhanced UI components to reflect worktree settings and improve user experience.

These changes provide a more robust and flexible environment for feature development and testing.

app/electron/preload.js

@@ -97,8 +97,8 @@ contextBridge.exposeInMainWorld("electronAPI", {
     status: () => ipcRenderer.invoke("auto-mode:status"),
 
     // Run a specific feature
-    runFeature: (projectPath, featureId) =>
-      ipcRenderer.invoke("auto-mode:run-feature", { projectPath, featureId }),
+    runFeature: (projectPath, featureId, useWorktrees) =>
+      ipcRenderer.invoke("auto-mode:run-feature", { projectPath, featureId, useWorktrees }),
 
     // Verify a specific feature by running its tests
     verifyFeature: (projectPath, featureId) =>
@@ -189,6 +189,17 @@ contextBridge.exposeInMainWorld("electronAPI", {
     getFileDiff: (projectPath, featureId, filePath) =>
       ipcRenderer.invoke("worktree:get-file-diff", { projectPath, featureId, filePath }),
   },
+
+  // Git Operations APIs (for non-worktree operations)
+  git: {
+    // Get file diffs for the main project
+    getDiffs: (projectPath) =>
+      ipcRenderer.invoke("git:get-diffs", { projectPath }),
+
+    // Get diff for a specific file in the main project
+    getFileDiff: (projectPath, filePath) =>
+      ipcRenderer.invoke("git:get-file-diff", { projectPath, filePath }),
+  },
 });
 
 // Also expose a flag to detect if we're in Electron