feat: integrate knowledge base creation in RepoCard and update app context key

- Updated the context key for the QueryRouterServer from 'router' to 'app'.
- Added functionality to create a knowledge base in RepoCard component.
- Introduced a new BookOpen icon and tooltip for knowledge base indication.
- Implemented a toast notification for successful knowledge base creation.
- Cleaned up imports in main.tsx by commenting out unused app import.

src/main.tsx

@@ -3,7 +3,7 @@ import { RouterProvider, createRouter } from '@tanstack/react-router'
 import { routeTree } from './routeTree.gen'
 import './index.css'
 import { basename } from './modules/basename'
-
+// import './agents/app'
 // Set up a Router instance
 const router = createRouter({
   routeTree,