test(release-cleanup): 補上 MAX_PAGES 邊界與刪除失敗記錄測試

新增 fetchAllPages 於第 MAX_PAGES 頁回空陣列時正常結束的測試,以及
cleanupReleases/cleanupOrphanTags 在 deleteResource 回非 204 時繼續處理
並寫入 stderr 錯誤記錄的測試。測試共 59 項全數通過。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/test/releases.test.js

@@ -103,6 +103,28 @@ test('cleanupReleases 對 id 進行 URL 編碼(防路徑穿越)', async () => {
   assert.deepEqual(client.deleted, ['http://x/releases/..%2Fevil'])
 })
 
+test('cleanupReleases 在刪除回傳非 204 時記錄錯誤至 stderr', async () => {
+  const client = fakeClient(
+    [
+      { id: 1, tag_name: 'v1', name: 'n1', created_at: '2024-01-01T00:00:00Z' },
+      { id: 2, tag_name: 'v2', name: 'n2', created_at: '2024-02-01T00:00:00Z' },
+    ],
+    () => 500,
+  )
+  const realWrite = process.stderr.write
+  const chunks = []
+  process.stderr.write = (chunk) => {
+    chunks.push(String(chunk))
+    return true
+  }
+  try {
+    await cleanupReleases(client, { releaseApiUrl: 'http://x/releases', keepCount: 1 })
+  } finally {
+    process.stderr.write = realWrite
+  }
+  assert.match(chunks.join(''), /\[ERR\]/)
+})
+
 test('cleanupReleases 略過沒有 id 的 release', async () => {
   const client = fakeClient([
     { id: 1, tag_name: 'v3', name: 'n3', created_at: '2024-03-01T00:00:00Z' },