diff --git a/.gitignore b/.gitignore
index fe525d1..4ff1317 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@ AGENTS.md
 PLAN.md
 CODING_STYLE.md
 RESEARCH.md
+apps/web/.next/
diff --git a/apps/web/package.json b/apps/web/package.json
index 25c42dc..edab5bd 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -3,7 +3,7 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "dev": "next dev -p 3000",
+    "dev": "bun run scripts/dev.ts",
     "build": "next build",
     "start": "next start -p 3000"
   },
@@ -12,5 +12,10 @@
     "next": "^14.2.4",
     "react": "^18.3.1",
     "react-dom": "^18.3.1"
+  },
+  "devDependencies": {
+    "@types/node": "^20.14.10",
+    "@types/react": "^18.3.3",
+    "typescript": "^5.5.4"
   }
 }
diff --git a/apps/web/scripts/dev.ts b/apps/web/scripts/dev.ts
new file mode 100644
index 0000000..b871370
--- /dev/null
+++ b/apps/web/scripts/dev.ts
@@ -0,0 +1,85 @@
+type PortCheck = {
+  port: number;
+  available: boolean;
+};
+
+const DEFAULT_PORTS = [3001, 3002, 3003, 3004, 3005];
+
+const isAvailable = (port: number): PortCheck => {
+  try {
+    const probe = Bun.serve({
+      port,
+      fetch: () => new Response("ok")
+    });
+    probe.stop();
+    return { port, available: true };
+  } catch {
+    return { port, available: false };
+  }
+};
+
+const parsePort = (value: string | undefined): number | null => {
+  if (!value) {
+    return null;
+  }
+
+  const parsed = Number.parseInt(value, 10);
+  if (!Number.isFinite(parsed) || parsed <= 0) {
+    return null;
+  }
+
+  return parsed;
+};
+
+const selectPort = (): number => {
+  const requested = parsePort(Bun.env.PORT);
+
+  if (requested !== null) {
+    const check = isAvailable(requested);
+    if (!check.available) {
+      throw new Error(`Port ${requested} is already in use. Set PORT to another value.`);
+    }
+    return requested;
+  }
+
+  for (const port of DEFAULT_PORTS) {
+    if (isAvailable(port).available) {
+      return port;
+    }
+  }
+
+  throw new Error("No available port found for Next dev server.");
+};
+
+const run = async () => {
+  const port = selectPort();
+  console.log(`[web] starting Next.js dev server on port ${port}`);
+
+  const path = Bun.env.PATH ?? "";
+  const cwd = `${import.meta.dir}/..`;
+
+  const child = Bun.spawn(["next", "dev", "-p", String(port)], {
+    cwd,
+    stdin: "inherit",
+    stdout: "inherit",
+    stderr: "inherit",
+    env: {
+      ...Bun.env,
+      PATH: `${cwd}/node_modules/.bin:${path}`,
+      PORT: String(port)
+    }
+  });
+
+  const shutdown = () => {
+    child.kill();
+    process.exit(0);
+  };
+
+  process.on("SIGINT", shutdown);
+  process.on("SIGTERM", shutdown);
+
+  const code = await child.exited;
+  process.exit(code ?? 0);
+};
+
+await run();
diff --git a/apps/web/tsconfig.json b/apps/web/tsconfig.json
index f4c4210..c99989f 100644
--- a/apps/web/tsconfig.json
+++ b/apps/web/tsconfig.json
@@ -2,10 +2,28 @@
   "extends": "../../tsconfig.base.json",
   "compilerOptions": {
     "jsx": "preserve",
-    "lib": ["DOM", "DOM.Iterable", "ES2022"],
+    "lib": [
+      "DOM",
+      "DOM.Iterable",
+      "ES2022"
+    ],
     "incremental": true,
-    "noEmit": true
+    "noEmit": true,
+    "allowJs": true,
+    "esModuleInterop": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ]
   },
-  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"],
-  "exclude": ["node_modules"]
+  "include": [
+    "next-env.d.ts",
+    "**/*.ts",
+    "**/*.tsx",
+    ".next/types/**/*.ts"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
 }
diff --git a/bun.lock b/bun.lock
index e5e75b5..bc0ef55 100644
--- a/bun.lock
+++ b/bun.lock
@@ -13,6 +13,11 @@
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
       },
+      "devDependencies": {
+        "@types/node": "^20.14.10",
+        "@types/react": "^18.3.3",
+        "typescript": "^5.5.4",
+      },
     },
     "packages/bus": {
       "name": "@islandflow/bus",
@@ -162,12 +167,20 @@
 
     "@swc/helpers": ["@swc/helpers@0.5.5", "", { "dependencies": { "@swc/counter": "^0.1.3", "tslib": "^2.4.0" } }, "sha512-KGYxvIOXcceOAbEk4bi/dVLEK9z8sZ0uBB3Il5b1rhfClSpcX0yfRO0KmTkqR2cnQDymwLB+25ZyMzICg/cm/A=="],
 
+    "@types/node": ["@types/node@20.19.27", "", { "dependencies": { "undici-types": "~6.21.0" } }, "sha512-N2clP5pJhB2YnZJ3PIHFk5RkygRX5WO/5f0WC08tp0wd+sv0rsJk3MqWn3CbNmT2J505a5336jaQj4ph1AdMug=="],
+
+    "@types/prop-types": ["@types/prop-types@15.7.15", "", {}, "sha512-F6bEyamV9jKGAFBEmlQnesRPGOQqS2+Uwi0Em15xenOxHaf2hv6L8YCVn3rPdPJOiJfPiCnLIRyvwVaqMY3MIw=="],
+
+    "@types/react": ["@types/react@18.3.27", "", { "dependencies": { "@types/prop-types": "*", "csstype": "^3.2.2" } }, "sha512-cisd7gxkzjBKU2GgdYrTdtQx1SORymWyaAFhaxQPK9bYO9ot3Y5OikQRvY0VYQtvwjeQnizCINJAenh/V7MK2w=="],
+
     "busboy": ["busboy@1.6.0", "", { "dependencies": { "streamsearch": "^1.1.0" } }, "sha512-8SFQbg/0hQ9xy3UNTB0YEnsNBbWfhf7RtnzpL7TkBiTBRfrQ9Fxcnz7VJsleJpyp6rVLvXiuORqjlHi5q+PYuA=="],
 
     "caniuse-lite": ["caniuse-lite@1.0.30001761", "", {}, "sha512-JF9ptu1vP2coz98+5051jZ4PwQgd2ni8A+gYSN7EA7dPKIMf0pDlSUxhdmVOaV3/fYK5uWBkgSXJaRLr4+3A6g=="],
 
     "client-only": ["client-only@0.0.1", "", {}, "sha512-IV3Ou0jSMzZrd3pZ48nLkT9DA7Ag1pnPzaiQhpW7c3RbcqqzvzzVu+L8gfqMp/8IM2MQtSiqaCxrrcfu8I8rMA=="],
 
+    "csstype": ["csstype@3.2.3", "", {}, "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ=="],
+
     "graceful-fs": ["graceful-fs@4.2.11", "", {}, "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ=="],
 
     "js-tokens": ["js-tokens@4.0.0", "", {}, "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="],
@@ -202,6 +215,10 @@
 
     "tweetnacl": ["tweetnacl@1.0.3", "", {}, "sha512-6rt+RN7aOi1nGMyC4Xa5DdYiukl2UWCbcJft7YhxReBGQD7OAM8Pbxw6YMo4r2diNEA8FEmu32YOn9rhaiE5yw=="],
 
+    "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
+
+    "undici-types": ["undici-types@6.21.0", "", {}, "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ=="],
+
     "zod": ["zod@3.25.76", "", {}, "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ=="],
   }
 }