fix(cleanup-release): 資料異常改判定失敗、分頁上限可設定並收斂錯誤輸出

- release id 非正整數、tag 缺少名稱時改視為失敗（fail + return false），壞資料不再被靜默當成功
- 分頁上限改為可用環境變數 MAX_PAGES 覆寫（預設 1000），超限錯誤訊息附調高方式
- 未捕捉錯誤預設只輸出 error.message，RUNNER_DEBUG=1 時才輸出完整 stack

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/index.js

@@ -1,7 +1,7 @@
 const https = require('https');
 
 const DELETE_CONCURRENCY = 4;
-const MAX_PAGES = 1000;
+const DEFAULT_MAX_PAGES = 1000;
 
 const keepAliveAgent = new https.Agent({ keepAlive: true });
 
@@ -295,18 +295,19 @@ function request(url, { method = 'GET', headers = {}, collectBody = true } = {})
 }
 
 /**
- * 逐頁抓取 JSON 陣列資料，直到回傳空頁為止；超過 `MAX_PAGES` 即中止並回報異常。
+ * 逐頁抓取 JSON 陣列資料，直到回傳空頁為止；超過 `maxPages` 即中止並回報異常。
  *
  * @param {string} baseUrl 不含 page 參數的 API URL。
  * @param {Record<string, string>} headers request 標頭。
+ * @param {number} [maxPages=DEFAULT_MAX_PAGES] 分頁上限，可由環境變數 `MAX_PAGES` 覆寫。
  * @returns {Promise<any[]>} 合併後的陣列資料。
  */
-async function fetchAllPages(baseUrl, headers) {
+async function fetchAllPages(baseUrl, headers, maxPages = DEFAULT_MAX_PAGES) {
   const all = [];
 
   for (let page = 1; ; page += 1) {
-    if (page > MAX_PAGES) {
-      throw new Error(`GET ${baseUrl} 分頁超過 ${MAX_PAGES} 頁上限，中止抓取以避免無限迴圈`);
+    if (page > maxPages) {
+      throw new Error(`GET ${baseUrl} 分頁超過 ${maxPages} 頁上限，中止抓取以避免無限迴圈；資料量更大時可用 MAX_PAGES 環境變數調高上限`);
     }
 
     const pageUrl = `${baseUrl}?page=${page}`;
@@ -401,6 +402,7 @@ async function main() {
   const GITEA_REPOSITORY = normalizeEnvValue(process.env.GITEA_REPOSITORY);
   const RUNNER_TOKEN = normalizeEnvValue(process.env.RUNNER_TOKEN) ?? '';
   const KEEP_COUNT = normalizeEnvValue(process.env.KEEP_COUNT) ?? '';
+  const MAX_PAGES = normalizeEnvValue(process.env.MAX_PAGES) ?? '';
 
   section('參數檢查');
   requireValue('GITEA_SERVER_URL', GITEA_SERVER_URL, maskUrlForLog(GITEA_SERVER_URL));
@@ -410,6 +412,13 @@ async function main() {
   requireValue('KEEP_COUNT', KEEP_COUNT);
   requirePositiveInteger('KEEP_COUNT', KEEP_COUNT);
 
+  let maxPages = DEFAULT_MAX_PAGES;
+  if (!isEmptyOrNull(MAX_PAGES)) {
+    info(`MAX_PAGES=${MAX_PAGES}`);
+    requirePositiveInteger('MAX_PAGES', MAX_PAGES);
+    maxPages = Number(MAX_PAGES);
+  }
+
   const keepCount = Number(KEEP_COUNT);
   const authHeaders = {};
   if (isEmptyOrNull(RUNNER_TOKEN)) {
@@ -432,7 +441,7 @@ async function main() {
   section('取得成品資訊');
   info(`GET ${releaseApiUrl}`);
 
-  const releaseJson = await fetchAllPages(releaseApiUrl, authHeaders);
+  const releaseJson = await fetchAllPages(releaseApiUrl, authHeaders, maxPages);
   releaseJson.sort((left, right) => {
     if (left.created_at < right.created_at) {
       return 1;
@@ -458,10 +467,10 @@ async function main() {
     const releaseResults = await processInBatches(releaseToDelete, DELETE_CONCURRENCY, async (releaseItem) => {
       const releaseId = releaseItem?.id;
       if (!Number.isSafeInteger(releaseId) || releaseId <= 0) {
-        warn(
-          `略過 id 不是正整數的成品: ${sanitizeLogText(releaseItem?.tag_name || '')} (${sanitizeLogText(releaseItem?.name || '')})`,
+        fail(
+          `成品 id 不是正整數，視為資料異常: ${sanitizeLogText(releaseItem?.tag_name || '')} (${sanitizeLogText(releaseItem?.name || '')})`,
         );
-        return true;
+        return false;
       }
 
       const releaseTag = sanitizeLogText(releaseItem.tag_name || '');
@@ -496,14 +505,14 @@ async function main() {
   const tagApiUrl = `${serverBaseUrl}/api/v1/repos/${repositoryPath}/tags`;
   info(`GET ${tagApiUrl}`);
 
-  const tagJson = await fetchAllPages(tagApiUrl, authHeaders);
+  const tagJson = await fetchAllPages(tagApiUrl, authHeaders, maxPages);
   info(`TAG_COUNT=${tagJson.length}`);
 
   const tagResults = await processInBatches(tagJson, DELETE_CONCURRENCY, async (tagItem) => {
     const tagName = tagItem?.name;
     if (isEmptyOrNull(tagName)) {
-      warn('略過沒有名稱的 tag');
-      return true;
+      fail('tag 缺少名稱，視為資料異常');
+      return false;
     }
 
     const safeTagName = sanitizeLogText(tagName);
@@ -532,7 +541,8 @@ async function main() {
 
 main()
   .catch((error) => {
-    fail(error instanceof Error ? error.stack || error.message : String(error));
+    const showStack = process.env.RUNNER_DEBUG === '1';
+    fail(error instanceof Error ? (showStack && error.stack) || error.message : String(error));
     process.exitCode = 1;
   })
   .finally(() => {