feat: add code graph feature with interactive visualization

- Implemented CodeGraphView component for visualizing project file structure using Sigma.js.
- Added NodeSearchBox for searching nodes within the graph.
- Created API module to fetch file data from backend.
- Developed graph building logic to construct a tree structure from file data.
- Integrated new routes and updated route tree to include the code graph page.
- Updated Vite configuration to load environment variables and changed server port.
- Added example data for testing the code graph functionality.

package.json

@@ -17,17 +17,24 @@
   "author": "abearxiong <xiongxiao@xiongxiao.me>",
   "license": "MIT",
   "dependencies": {
-    "@base-ui/react": "^1.2.0",
+    "@base-ui/react": "^1.3.0",
+    "@codemirror/lang-css": "^6.3.1",
+    "@codemirror/lang-html": "^6.4.11",
+    "@codemirror/lang-javascript": "^6.2.5",
+    "@codemirror/lang-json": "^6.0.2",
+    "@codemirror/lang-markdown": "^6.5.0",
     "@kevisual/api": "^0.0.64",
     "@kevisual/context": "^0.0.8",
     "@kevisual/router": "0.1.1",
     "@tanstack/react-query": "^5.90.21",
     "@tanstack/react-router": "^1.166.7",
+    "@uiw/codemirror-theme-vscode": "^4.25.8",
+    "@uiw/react-codemirror": "^4.25.8",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "^1.1.1",
-    "convex": "^1.32.0",
-    "dayjs": "^1.11.19",
+    "convex": "^1.33.0",
+    "dayjs": "^1.11.20",
     "es-toolkit": "^1.45.1",
     "fuse.js": "^7.1.0",
     "graphology": "^0.26.0",
@@ -54,15 +61,15 @@
     "@tailwindcss/vite": "^4.2.1",
     "@tanstack/react-router-devtools": "^1.166.7",
     "@tanstack/router-plugin": "^1.166.7",
-    "@types/node": "^25.4.0",
+    "@types/node": "^25.5.0",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^5.1.4",
+    "@vitejs/plugin-react": "^6.0.1",
     "dotenv": "^17.3.1",
     "tailwind-merge": "^3.5.0",
     "tailwindcss": "^4.2.1",
     "tw-animate-css": "^1.4.0",
     "typescript": "^5.9.3",
-    "vite": "v8.0.0-beta.18"
+    "vite": "v8.0.0"
   }
 }