feat: remove "Agent Tools" from side navigation and related components

- Deleted the "Agent Tools" navigation item from the sidebar.
- Updated keyboard shortcuts and app store types to reflect the removal.
- Cleaned up imports and references in relevant files.
- Retained the `agent-tools-view.tsx` component for potential future use.

.automaker/features/feature-1765525566442-wsdrtodkc/feature.json

@@ -0,0 +1,14 @@
+{
+  "category": "Uncategorized",
+  "description": "for now, just remove agent tools from the side navigation, they are useless",
+  "steps": [],
+  "status": "completed",
+  "images": [],
+  "imagePaths": [],
+  "skipTests": true,
+  "model": "opus",
+  "thinkingLevel": "none",
+  "id": "feature-1765525566442-wsdrtodkc",
+  "startedAt": "2025-12-12T07:46:08.507Z",
+  "updatedAt": "2025-12-12T07:48:34.967Z"
+}