diff --git a/package-lock.json b/package-lock.json
index 47931eb..3c4bda8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -35,6 +35,7 @@
         "@radix-ui/react-toggle": "^1.1.9",
         "@radix-ui/react-toggle-group": "^1.1.10",
         "@radix-ui/react-tooltip": "^1.2.7",
+        "@sinm/react-file-tree": "^1.1.1",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
         "cmdk": "^1.1.1",
@@ -51,7 +52,7 @@
       },
       "devDependencies": {
         "@tailwindcss/postcss": "^4",
-        "@types/node": "^20",
+        "@types/node": "^20.19.30",
         "@types/react": "^19",
         "@types/react-dom": "^19",
         "tailwindcss": "^4",
@@ -2428,6 +2429,16 @@
       "integrity": "sha512-HPwpGIzkl28mWyZqG52jiqDJ12waP11Pa1lGoiyUkIEuMLBP0oeK/C89esbXrxsky5we7dfd8U58nm0SgAWpVw==",
       "license": "MIT"
     },
+    "node_modules/@sinm/react-file-tree": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@sinm/react-file-tree/-/react-file-tree-1.1.1.tgz",
+      "integrity": "sha512-XlHLLNV18zWx7mYEH5gtlBb7jYFX7GaBA5jmhsG9YXhgwyyK33JgymrbU+IHDDBakAoZ+xISLKzu2ldzKbA/wg==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/react-virtualized": "^9.21.15",
+        "react-virtualized": "^9.22.3"
+      }
+    },
     "node_modules/@swc/helpers": {
       "version": "0.5.15",
       "resolved": "https://registry.npmjs.org/@swc/helpers/-/helpers-0.5.15.tgz",
@@ -2781,11 +2792,16 @@
         "undici-types": "~6.21.0"
       }
     },
+    "node_modules/@types/prop-types": {
+      "version": "15.7.15",
+      "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.15.tgz",
+      "integrity": "sha512-F6bEyamV9jKGAFBEmlQnesRPGOQqS2+Uwi0Em15xenOxHaf2hv6L8YCVn3rPdPJOiJfPiCnLIRyvwVaqMY3MIw==",
+      "license": "MIT"
+    },
     "node_modules/@types/react": {
       "version": "19.2.10",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.10.tgz",
       "integrity": "sha512-WPigyYuGhgZ/cTPRXB2EwUw+XvsRA3GqHlsP4qteqrnnjDrApbS7MxcGr/hke5iUoeB7E/gQtrs9I37zAJ0Vjw==",
-      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "csstype": "^3.2.2"
@@ -2801,6 +2817,16 @@
         "@types/react": "^19.2.0"
       }
     },
+    "node_modules/@types/react-virtualized": {
+      "version": "9.22.3",
+      "resolved": "https://registry.npmjs.org/@types/react-virtualized/-/react-virtualized-9.22.3.tgz",
+      "integrity": "sha512-UKRWeBIrECaKhE4O//TSFhlgwntMwyiEIOA7WZoVkr52Jahv0dH6YIOorqc358N2V3oKFclsq5XxPmx2PiYB5A==",
+      "license": "MIT",
+      "dependencies": {
+        "@types/prop-types": "*",
+        "@types/react": "*"
+      }
+    },
     "node_modules/aria-hidden": {
       "version": "1.2.6",
       "resolved": "https://registry.npmjs.org/aria-hidden/-/aria-hidden-1.2.6.tgz",
@@ -3664,6 +3690,12 @@
       "integrity": "sha512-/LLMVyas0ljjAtoYiPqYiL8VWXzUUdThrmU5+n20DZv+a+ClRoevUzw5JxU+Ieh5/c87ytoTBV9G1FiKfNJdmg==",
       "license": "MIT"
     },
+    "node_modules/react-lifecycles-compat": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz",
+      "integrity": "sha512-fBASbA6LnOU9dOU2eW7aQ8xmYBSXUIWr+UmF9b1efZBazGNO+rcXT/icdKnYm2pTwcRylVUYwW7H1PHfLekVzA==",
+      "license": "MIT"
+    },
     "node_modules/react-remove-scroll": {
       "version": "2.7.2",
       "resolved": "https://registry.npmjs.org/react-remove-scroll/-/react-remove-scroll-2.7.2.tgz",
@@ -3764,6 +3796,33 @@
         "react-dom": ">=16.6.0"
       }
     },
+    "node_modules/react-virtualized": {
+      "version": "9.22.6",
+      "resolved": "https://registry.npmjs.org/react-virtualized/-/react-virtualized-9.22.6.tgz",
+      "integrity": "sha512-U5j7KuUQt3AaMatlMJ0UJddqSiX+Km0YJxSqbAzIiGw5EmNz0khMyqP2hzgu4+QUtm+QPIrxzUX4raJxmVJnHg==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.7.2",
+        "clsx": "^1.0.4",
+        "dom-helpers": "^5.1.3",
+        "loose-envify": "^1.4.0",
+        "prop-types": "^15.7.2",
+        "react-lifecycles-compat": "^3.0.4"
+      },
+      "peerDependencies": {
+        "react": "^16.3.0 || ^17.0.0 || ^18.0.0 || ^19.0.0",
+        "react-dom": "^16.3.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
+    "node_modules/react-virtualized/node_modules/clsx": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/clsx/-/clsx-1.2.1.tgz",
+      "integrity": "sha512-EcR6r5a8bj6pu3ycsa/E/cKVGuTgZJZdsyUYHOksG/UHIiKfjxzRxYJpyVBwYaQeOvghal9fcc4PidlgzugAQg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/recharts": {
       "version": "2.15.4",
       "resolved": "https://registry.npmjs.org/recharts/-/recharts-2.15.4.tgz",
diff --git a/package.json b/package.json
index 083f6bd..4a4346c 100644
--- a/package.json
+++ b/package.json
@@ -35,6 +35,7 @@
     "@radix-ui/react-toggle": "^1.1.9",
     "@radix-ui/react-toggle-group": "^1.1.10",
     "@radix-ui/react-tooltip": "^1.2.7",
+    "@sinm/react-file-tree": "^1.1.1",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "^1.1.1",
@@ -51,7 +52,7 @@
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
-    "@types/node": "^20",
+    "@types/node": "^20.19.30",
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "tailwindcss": "^4",
diff --git a/src/app/run/page.tsx b/src/app/run/page.tsx
index c0a843a..4f6e94e 100644
--- a/src/app/run/page.tsx
+++ b/src/app/run/page.tsx
@@ -1,6 +1,6 @@
-import { Play, Pause, RotateCcw, Flag, ChevronRight } from "lucide-react";
-import SplitRow from "@/components/app/SplitRow";
-import { Button } from "@/components/ui/button";
+"use client";
+
+import { FileTree } from "@sinm/react-file-tree";
 
 type RunInfo = {
   category: "any%" | "100%";
@@ -70,10 +70,26 @@ export default function Run() {
     { user: "Charlie", message: "PB incoming? 👀", time: "1:55" },
   ];
 
+  const codebase = [];
+
   return (
     <div className="h-svh px-20 pt-24 pb-12 flex gap-8">
       {/* Editor */}
-      <div className="h-full w-full bg-card rounded-2xl"></div>
+      <div className="h-full w-full bg-card rounded-2xl flex overflow-clip">
+        <div className="h-full w-2xs border-r-2 p-5">
+          <FileTree
+            tree={{
+              type: "directory",
+              uri: "my-app",
+              children: [],
+            }}
+          />
+        </div>
+        <div className="h-full w-full overflow-y-scroll p-5">
+          <header>myfile.js</header>
+          <div className="mt-3"></div>
+        </div>
+      </div>
 
       {/* Timer & Chat */}
       <div className="flex flex-col gap-6 h-full">