diff --git a/.cursor/rules/repo-context.mdc b/.cursor/rules/repo-context.mdc
new file mode 100644
index 0000000..35e640c
--- /dev/null
+++ b/.cursor/rules/repo-context.mdc
@@ -0,0 +1,10 @@
+---
+description: Shared repo context
+alwaysApply: true
+---
+
+Read `AGENTS.md` first. Treat it as the source of truth for this repo's
+commands, invariants, public naming, release constraints, and first-user path.
+
+This file is a thin client adapter for Cursor. Do not add independent strategy,
+roadmap, package-name, release, or baseline-scope rules here.
diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
new file mode 100644
index 0000000..0c6e602
--- /dev/null
+++ b/.github/copilot-instructions.md
@@ -0,0 +1,8 @@
+# Agent context
+
+Read `AGENTS.md` first. Treat it as the source of truth for this repo's
+commands, invariants, public naming, release constraints, and first-user path.
+
+This file is a thin client adapter for GitHub Copilot and VS Code. Do not add
+independent strategy, roadmap, package-name, release, or baseline-scope rules
+here.
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..5838d3c
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,7 @@
+# Agent context
+
+Read `AGENTS.md` first. Treat it as the source of truth for this repo's
+commands, invariants, public naming, release constraints, and first-user path.
+
+This file is a thin client adapter. Do not add independent strategy, roadmap,
+package-name, release, or baseline-scope rules here.
diff --git a/README.ko.md b/README.ko.md
index 3dfbdf1..33994a3 100644
--- a/README.ko.md
+++ b/README.ko.md
@@ -27,7 +27,7 @@
 **[create-starter](https://github.com/starter-series/create-starter) 사용** (권장):
 
 ```bash
-npx @starter-series/create my-app --template react-native
+gh repo create my-app --template starter-series/react-native-starter --clone
 cd my-app
 npm install
 npm run check:expo
diff --git a/README.md b/README.md
index 1dcac4e..55b4818 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ Build your app. Push to deploy.
 **Via [create-starter](https://github.com/starter-series/create-starter)** (recommended):
 
 ```bash
-npx @starter-series/create my-app --template react-native
+gh repo create my-app --template starter-series/react-native-starter --clone
 cd my-app
 npm install
 npm run check:expo
diff --git a/package-lock.json b/package-lock.json
index e6e7b8a..bd0256d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
       "devDependencies": {
         "@eslint/js": "^10.0.1",
         "@testing-library/react-native": "^12.9.0",
-        "eslint": "^10.5.0",
+        "eslint": "^10.6.0",
         "globals": "^17.7.0",
         "jest": "~29.7.0",
         "jest-expo": "~52.0.0",
@@ -6716,9 +6716,9 @@
       }
     },
     "node_modules/eslint": {
-      "version": "10.5.0",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-10.5.0.tgz",
-      "integrity": "sha512-1y+7C+vi12bUK1IpZeaV3gsH9fHLBmPvYmPx42pvT/E9yG0IC8g3PUZZgp0+JLJl7ZDK0flc2gc+Aw9dpCvIsQ==",
+      "version": "10.6.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-10.6.0.tgz",
+      "integrity": "sha512-6lVbcqSodALYo+4ELD0heG6lFiFxnLMuLkiMi2qV8LMp54N8tE8FT1GMH+ev4Ti00nFjNze2+Su6DsV5OQW3Dg==",
       "dev": true,
       "license": "MIT",
       "workspaces": [
diff --git a/package.json b/package.json
index 0ee5e3a..c898a1c 100644
--- a/package.json
+++ b/package.json
@@ -34,13 +34,13 @@
     "react-native-web": "~0.19.13"
   },
   "devDependencies": {
-    "@testing-library/react-native": "^12.9.0",
-    "react-test-renderer": "18.3.1",
     "@eslint/js": "^10.0.1",
-    "eslint": "^10.5.0",
+    "@testing-library/react-native": "^12.9.0",
+    "eslint": "^10.6.0",
     "globals": "^17.7.0",
     "jest": "~29.7.0",
-    "jest-expo": "~52.0.0"
+    "jest-expo": "~52.0.0",
+    "react-test-renderer": "18.3.1"
   },
   "overrides": {
     "@babel/core": "7.29.7",
diff --git a/tests/auth-context.test.js b/tests/auth-context.test.js
index fe2932b..81a919e 100644
--- a/tests/auth-context.test.js
+++ b/tests/auth-context.test.js
@@ -73,7 +73,8 @@ const { assertGoogleEnv, readGoogleClientIds } = require('../lib/env');
 
 function Probe({ onUser }) {
   const ctx = useAuth();
-  onUser(ctx);
+  onUser?.(ctx);
+  if (ctx.loading) return <Text>loading</Text>;
   return <Text>{ctx.user ? `user:${ctx.user.email}` : 'anon'}</Text>;
 }
 
@@ -281,8 +282,9 @@ describe('AuthProvider lifecycle', () => {
           <Probe onUser={(c) => (captured = c)} />
         </AuthProvider>,
       );
-      await waitFor(() => expect(captured.loading).toBe(false), { timeout: 4000 });
-      expect(captured.user).toBeNull();
+      await waitFor(() => expect(captured?.loading).toBe(false), { timeout: 4000 });
+      expect(captured?.loading).toBe(false);
+      expect(captured?.user).toBeNull();
       expect(mockSecureStore.getItemAsync).toHaveBeenCalledWith(STORAGE_KEY);
     },
     10000,