fix(cliproxy): propagate agy entitlement failure metadata

tests/unit/cliproxy/quota-fetcher-antigravity-failure.test.ts

@@ -28,4 +28,58 @@ describe('Antigravity quota failure metadata', () => {
       capacityState: 'rate_limited',
     });
   });
+
+  it('preserves entitlement evidence when project lookup fails before quota fetch', async () => {
+    const moduleId = Date.now() + Math.random();
+    const { fetchAccountQuota } = await import(`../../../src/cliproxy/quota-fetcher?agy-early=${moduleId}`);
+    const { getProviderAuthDir } = await import(
+      `../../../src/cliproxy/config-generator?agy-config=${moduleId}`
+    );
+    const fs = await import('node:fs');
+    const os = await import('node:os');
+    const path = await import('node:path');
+
+    const tempHome = fs.mkdtempSync(path.join(os.tmpdir(), 'ccs-agy-failure-'));
+    const originalCcsHome = process.env.CCS_HOME;
+    process.env.CCS_HOME = tempHome;
+
+    try {
+      const authDir = getProviderAuthDir('agy');
+      fs.mkdirSync(authDir, { recursive: true });
+      fs.writeFileSync(
+        path.join(authDir, 'antigravity-user@example.com.json'),
+        JSON.stringify({
+          type: 'antigravity',
+          email: 'user@example.com',
+          project_id: 'project-x',
+          access_token: 'token',
+        })
+      );
+
+      const originalFetch = globalThis.fetch;
+      globalThis.fetch = (async () =>
+        new Response(JSON.stringify({ error: { message: 'forbidden' } }), {
+          status: 403,
+          headers: { 'Content-Type': 'application/json' },
+        })) as typeof fetch;
+
+      try {
+        const result = await fetchAccountQuota('agy', 'user@example.com');
+        expect(result.success).toBe(false);
+        expect(result.entitlement).toMatchObject({
+          accessState: 'not_entitled',
+          capacityState: 'unknown',
+        });
+      } finally {
+        globalThis.fetch = originalFetch;
+      }
+    } finally {
+      if (originalCcsHome === undefined) {
+        delete process.env.CCS_HOME;
+      } else {
+        process.env.CCS_HOME = originalCcsHome;
+      }
+      fs.rmSync(tempHome, { recursive: true, force: true });
+    }
+  });
 });