feat: add virtual file system

package.json

@@ -530,6 +530,7 @@
     "@vscode/vsce": "^3.2.1",
     "@xenova/transformers": "^2.17.2",
     "apache-arrow": "^18.1.0",
+    "async-mutex": "^0.5.0",
     "autoprefixer": "^10.4.20",
     "babel-plugin-react-compiler": "^19.0.0-beta-b2e8e9c-20241220",
     "chalk": "^5.4.1",
@@ -569,13 +570,15 @@
     "ignore": "^7.0.0",
     "immer": "^10.1.1",
     "inquirer": "^9.3.4",
+    "isomorphic-git": "^1.29.0",
     "js-tiktoken": "^1.0.16",
     "knip": "^5.41.1",
     "langchain": "^0.3.10",
     "lexical": "^0.23.0",
     "lint-staged": "^15.3.0",
     "lowdb": "^7.0.1",
     "lucide-react": "^0.469.0",
+    "memfs": "^4.15.3",
     "mermaid": "^11.4.1",
     "minimatch": "^10.0.1",
     "next-themes": "^0.4.4",
@@ -619,6 +622,7 @@
     "typescript": "5.7.2",
     "undici": "^7.2.0",
     "unified": "^11.0.5",
+    "unionfs": "^4.5.4",
     "use-immer": "^0.11.0",
     "use-resize-observer": "^9.1.0",
     "uuid": "^11.0.4",