fix: restore triage skill files and keep sync non-destructive

Reviewed-on: #101

.gitea/ai-review/exclusions.json

@@ -279,5 +279,33 @@
   {
     "location": "app/json.js",
     "suggestion": "validateJSONArrayFile 只在 JSON 格式錯誤時才啟動 AI 修正，屬例外路徑；再加上檔案大小限制後，並不存在實際的無上限讀檔或資源消耗問題。"
+  },
+  {
+    "location": "app/json.test.js",
+    "suggestion": "邊界值測試已存在，`MAX_JSON_BYTES` 等於上限時可正常讀取，這不是未解決問題。"
+  },
+  {
+    "location": "app/gitea.test.js:64",
+    "suggestion": "`describe` 已改為同步 callback，`async` 不再出現在這個區塊。"
+  },
+  {
+    "location": "app/git.test.js:13",
+    "suggestion": "`makeTmpWorkspace` 已直接使用 `app/git.js` 匯出的 `SYNC_PATHS`，不再維護重複清單。"
+  },
+  {
+    "location": "app/gitea.js:32",
+    "suggestion": "`filterDiff` 內層縮排已符合專案的 2-space 風格，這是誤報。"
+  },
+  {
+    "location": "app/json.test.js:76",
+    "suggestion": "1MB 上限下的 JSON 讀取不需要改成串流解析；現有實作已先做大小檢查，這個建議屬過度設計。"
+  },
+  {
+    "location": "app/json.test.js:7",
+    "suggestion": "檔案大小限制已在 `readJSONText` / `validateJSONArrayFile` 中實作，這不是額外缺陷。"
+  },
+  {
+    "location": "app/json.test.js:10",
+    "suggestion": "`MAX_JSON_BYTES` 是 `json.js` 的內部限制常數，不需要匯出成公開 API。"
   }
 ]

.gitea/ai-review/findings.json

@@ -1,16 +1 @@
-[
-  {
-    "level": "warning",
-    "role": "Maya",
-    "location": "app/json.test.js",
-    "suggestion": "在 `readJSONText` 相關的測試中，除了測試檔案過大的情況，也建議增加一個測試案例，驗證當檔案大小剛好等於 `MAX_JSON_BYTES` 時，檔案能夠被成功讀取且不會拋出錯誤。這能確保邊界條件的處理是正確的。",
-    "is_new": true
-  },
-  {
-    "level": "info",
-    "role": "Maya",
-    "location": "app/json.test.js",
-    "suggestion": "在 `validateJSONArrayFile` 函數中，寫入修復後的 JSON 時，有判斷是否需要添加換行符 (`repaired.endsWith('\\n') ? repaired : `${repaired}\\n``)。目前的測試案例只驗證了最終結果包含換行符，但沒有明確測試兩種情況：當 AI 回傳的內容已經包含換行符時，以及不包含換行符時，都能正確處理。建議增加一個測試案例來覆蓋這兩種情況。",
-    "is_new": true
-  }
-]
+[]

.github/copilot-instructions.md

@@ -1,16 +1,14 @@
 # Triage Findings
 
-When the task is to triage review findings, follow this workflow:
+Use the triage-finding workflow for review issue lists:
 
-1. Merge all findings into one list.
+1. Merge findings into one list.
 2. Remove duplicates.
 3. Sort by severity: `critical` -> `warning` -> `info`.
-4. Renumber from 1 after sorting.
+4. Renumber from 1.
 5. Fix real issues with the smallest safe change.
-6. Add false positives to `.gitea/ai-review/exclusions.json`.
+6. Put false positives into `.gitea/ai-review/exclusions.json`.
 7. Add or update tests when behavior changes.
-8. Re-check the issue after each fix.
+8. Re-check after each fix.
 
-Use the repo-local `triage-findings` skill for the same workflow when running in Codex.
-
-Trigger it with `/triage-findings`.
+The full reusable skill lives in `.claude/skills/triage-findings/SKILL.md`.

.github/skills/triage-findings/SKILL.md

@@ -1,28 +1,14 @@
----
-name: triage-findings
-description: Triage findings, fix real issues, and exclude false positives.
----
-
 # Triage Findings
 
-## Use
+Use the triage-finding workflow for review issue lists:
 
-`triage-findings 問題原始檔(文字或截圖)`
+1. Merge findings into one list.
+2. Remove duplicates.
+3. Sort by severity: `critical` -> `warning` -> `info`.
+4. Renumber from 1.
+5. Fix real issues with the smallest safe change.
+6. Put false positives into `.gitea/ai-review/exclusions.json`.
+7. Add or update tests when behavior changes.
+8. Re-check after each fix.
 
-## Workflow
-
-1. Merge all findings.
-2. Sort by severity:
-   - critical
-   - warning
-   - info
-3. Renumber from 1.
-4. Fix real issues.
-5. Put false positives into `.gitea/ai-review/exclusions.json`.
-6. Add tests when behavior changes.
-
-## Output Rules
-
-- Keep the final list short.
-- Keep numbering contiguous.
-- Preserve file path, location, and fix.
+The reusable skill lives in `.gemini/skills/triage-findings/SKILL.md`.

CLAUDE.md

@@ -1,14 +1,16 @@
 # Triage Findings
 
-Use the triage-finding workflow for review issue lists:
+When the task is to triage review findings, follow this workflow:
 
-1. Merge findings into one list.
+1. Merge all findings into one list.
 2. Remove duplicates.
 3. Sort by severity: `critical` -> `warning` -> `info`.
-4. Renumber from 1.
+4. Renumber from 1 after sorting.
 5. Fix real issues with the smallest safe change.
-6. Put false positives into `.gitea/ai-review/exclusions.json`.
+6. Add false positives to `.gitea/ai-review/exclusions.json`.
 7. Add or update tests when behavior changes.
-8. Re-check after each fix.
+8. Re-check the issue after each fix.
 
-The full reusable skill lives in `.claude/skills/triage-findings/SKILL.md`.
+Use the repo-local `triage-findings` skill for the same workflow when running in Codex.
+
+Trigger it with `/triage-findings`.

README.md

@@ -11,7 +11,7 @@
 5. 從PR問題表格中取出所有舊問題，依照等級排序後 Comment 到 Push Request
 6. 從PR問題表格中取出所有新問題，排除嚴重等級的問題後 Comment 到 Push Request
 7. 從PR問題表格中取出所有新問題，將每個嚴重等級的問題 Comment 到 Push Request
-8. Commit 問題檔案
+8. Commit 問題檔案，將 workspace 中實際存在的同步檔覆蓋到記憶區；workspace 沒有的同步檔就略過，不會刪除記憶區既有內容
 9. 如果PR問題表格中有嚴重問題，則不要讓 workflow 執行成功(exit 1)
 
 # 設計
@@ -227,4 +227,4 @@ Amazon Q：直接輸入 `triage-findings 問題原始檔(文字或截圖)`
 
 ### 版本包含
 
-提交時一併包含 `triage-findings` skill 與各平台入口檔；已存在檔案一律覆蓋，同步到最新內容。
+提交時一併包含 `triage-findings` skill 與各平台入口檔；已存在檔案一律覆蓋，同步到最新內容；若 workspace 沒有某個同步檔，記憶區會保留原檔，不做刪除。

TODO.md

@@ -38,9 +38,9 @@
 - 已驗收：log 已明確顯示 `.gitea/ai-review/findings.json` 與 `.gitea/ai-review/exclusions.json` 都是 `JSON 格式正確`。
 
 ## 階段八：記憶區 commit/push 與錯誤處理
-- 目標：記憶區能成功 commit/push，且一併包含 `triage-findings` skill 與各平台入口檔；skill 檔案已存在時一律以來源覆蓋，達到同步效果；錯誤時有明確 log，流程結束有總結訊息。
-- 驗收：log 有「persisted findings」、「commit=...」、「push=...」等訊息，且能看出 skill 相關檔案已一併提交並被覆蓋同步；錯誤時有「Runner failed: ...」等明確錯誤說明。
-- 已驗收：log 已出現 `persisted findings commit=79506eb push=整理程式碼`，代表 commit/push 成功。
+- 目標：記憶區能成功 commit/push，且一併包含 `triage-findings` skill 與各平台入口檔；skill 檔案已存在時一律以來源覆蓋，workspace 沒有的同步檔則保留記憶區既有內容，不做刪除；錯誤時有明確 log，流程結束有總結訊息。
+- 驗收：log 有「persisted findings」、「commit=...」、「push=...」等訊息，且能看出 skill 相關檔案已一併提交並被來源覆蓋；當 workspace 缺少某個同步檔時，記憶區中的對應檔案不會被刪除；錯誤時有「Runner failed: ...」等明確錯誤說明。
+- 已驗收：log 已出現 `persisted findings commit=79506eb push=整理程式碼`，代表 commit/push 成功；本次已補上「來源覆蓋、缺檔不刪除」的同步規則，相關單元測試也已覆蓋。
 
 ## 階段九：阻擋嚴重問題 PR（第 8 點）
 - 目標：如果 PR 問題表格中有嚴重（critical）問題，workflow 需直接 exit 1，不讓流程成功。

app/git.js

@@ -4,7 +4,7 @@ import path from 'path';
 import { GITEA_SERVER_URL, GITEA_REPOSITORY, GITEA_TOKEN, PR_HEAD_BRANCH, FINDINGS_PATH } from './config.js';
 
 const remoteUrl = `${GITEA_SERVER_URL.replace(/\/$/, '')}/${GITEA_REPOSITORY}.git`;
-const SYNC_PATHS = [
+export const SYNC_PATHS = [
   FINDINGS_PATH,
   '.amazonq/rules/triage-findings.md',
   '.claude/skills/triage-findings/SKILL.md',
@@ -65,16 +65,23 @@ export async function commitAndPush(workspace, repoDir, _spawnSync = spawnSync)
       run(['config', 'user.email', 'ai-review[bot]@gitea'], repoDir);
       run(['config', 'user.name', 'AI Review Bot'], repoDir);
 
-      // Always copy source files over the repo copy so skill files stay in sync.
+      const existingSyncPaths = [];
+
+      // Copy action skill files into the target repo. Existing files are overwritten;
+      // missing source files are ignored so we do not delete target repo content.
       for (const relPath of SYNC_PATHS) {
         const src = path.join(workspace, relPath);
         const dest = path.join(repoDir, relPath);
-        if (!fs.existsSync(src)) continue;
-        fs.mkdirSync(path.dirname(dest), { recursive: true });
-        fs.copyFileSync(src, dest);
+        if (fs.existsSync(src)) {
+          fs.mkdirSync(path.dirname(dest), { recursive: true });
+          fs.copyFileSync(src, dest);
+          existingSyncPaths.push(relPath);
+        }
       }
 
-      run(['add', ...SYNC_PATHS], repoDir);
+      if (existingSyncPaths.length > 0) {
+        run(['add', ...existingSyncPaths], repoDir);
+      }
 
       const status = run(['status', '--porcelain'], repoDir);
       if (!status) {

app/git.test.js

@@ -3,24 +3,14 @@ import assert from 'node:assert/strict';
 import fs from 'fs';
 import os from 'os';
 import path from 'path';
-import { commitAndPush, cloneRepo } from './git.js';
+import { commitAndPush, cloneRepo, SYNC_PATHS } from './git.js';
 
 // --- helpers ---
 function makeTmpWorkspace() {
   const ws = fs.mkdtempSync(path.join(os.tmpdir(), 'git-test-'));
   // Pre-create repo dir so clone branch is skipped
   fs.mkdirSync(path.join(ws, 'repo'), { recursive: true });
-  const files = [
-    '.gitea/ai-review/findings.json',
-    '.amazonq/rules/triage-findings.md',
-    '.claude/skills/triage-findings/SKILL.md',
-    '.gemini/skills/triage-findings/SKILL.md',
-    '.github/copilot-instructions.md',
-    '.github/skills/triage-findings/SKILL.md',
-    'CLAUDE.md',
-    'GEMINI.md',
-  ];
-  for (const relPath of files) {
+  for (const relPath of SYNC_PATHS) {
     const fullPath = path.join(ws, relPath);
     fs.mkdirSync(path.dirname(fullPath), { recursive: true });
     fs.writeFileSync(fullPath, relPath);
@@ -111,6 +101,20 @@ describe('commitAndPush', () => {
     assert.ok(!addCall.args.includes('README.md'));
   });
 
+  it('keeps repo copies when the source sync file is missing', async () => {
+    const missingPath = path.join(workspace, '.amazonq/rules/triage-findings.md');
+    fs.rmSync(missingPath, { force: true });
+    const repoPath = path.join(workspace, 'repo', '.amazonq/rules/triage-findings.md');
+    fs.writeFileSync(repoPath, 'stale');
+    const spawn = makeSpawn();
+
+    await commitAndPush(workspace, path.join(workspace, 'repo'), spawn);
+
+    const rmCall = spawn.calls.find(c => c.args[0] === 'rm');
+    assert.equal(rmCall, undefined, 'git rm should not run for missing source files');
+    assert.equal(fs.readFileSync(repoPath, 'utf8'), 'stale');
+  });
+
   it('overwrites existing repo copies with workspace files', async () => {
     const repoDir = path.join(workspace, 'repo');
     fs.writeFileSync(path.join(repoDir, '.github/skills/triage-findings/SKILL.md'), 'stale');

app/gitea.js

@@ -11,7 +11,18 @@ const api = (path) => `${GITEA_SERVER_URL.replace(/\/$/, '')}/api/v1${path}`;
  */
 export async function getPRDiff() {
   const resp = await axios.get(api(`/repos/${GITEA_REPOSITORY}/pulls/${PR_NUMBER}.diff`), { headers: headers(), timeout: 60000, httpsAgent });
-  return filterDiff(resp.data, ['.gitea/', '.amazonq/', '.claude/', '.codex/', '.gemini/', '.github/', 'CLAUDE.md', 'GEMINI.md', 'TODO.md', 'README.md']);
+  return filterDiff(resp.data, [
+    '.amazonq/',
+    '.claude/',
+    '.codex/',
+    '.gemini/',
+    '.gitea/',
+    '.github/',
+    'CLAUDE.md',
+    'GEMINI.md',
+    'README.md',
+    'TODO.md',
+  ]);
 }
 
 /**

app/gitea.test.js

@@ -1,12 +1,11 @@
 import { describe, it, afterEach, mock } from 'node:test';
 import assert from 'node:assert/strict';
 import axios from 'axios';
+import { getPRDiff, filterDiff, postComment } from './gitea.js';
 
 afterEach(() => mock.restoreAll());
 
-describe('gitea', async () => {
-  const { getPRDiff, filterDiff, postComment } = await import('./gitea.js');
-
+describe('gitea', () => {
   it('getPRDiff calls Gitea diff API with Authorization header', async () => {
     let capturedUrl, capturedOpts;
     mock.method(axios, 'get', async (url, opts) => {
@@ -59,9 +58,7 @@ describe('gitea', async () => {
   });
 });
 
-describe('filterDiff', async () => {
-  const { filterDiff } = await import('./gitea.js');
-
+describe('filterDiff', () => {
   const block = (file) => `diff --git a/${file} b/${file}\n--- a/${file}\n+++ b/${file}\n@@ -1 +1 @@\n-old\n+new\n`;
 
   it('filters out configured folder blocks', () => {

app/json.test.js

@@ -6,6 +6,7 @@ import path from 'path';
 import { stripCodeFence, repairJSONArrayWithAI, validateJSONArrayFile, ensureJSONArrayFileExists } from './json.js';
 
 describe('json helpers', () => {
+  const MAX_JSON_BYTES = 1024 * 1024;
   let workspace;
 
   beforeEach(() => {
@@ -76,6 +77,16 @@ describe('json helpers', () => {
     assert.equal(fs.readFileSync(fullPath, 'utf8'), '[]\n');
   });
 
+  it('reads a valid JSON file whose size equals the maximum limit', async () => {
+    const fullPath = path.join(workspace, '.gitea/ai-review/findings.json');
+    fs.mkdirSync(path.dirname(fullPath), { recursive: true });
+    fs.writeFileSync(fullPath, `[]${' '.repeat(MAX_JSON_BYTES - 2)}`, 'utf8');
+
+    const result = await validateJSONArrayFile(fullPath, '.gitea/ai-review/findings.json');
+
+    assert.deepEqual(result, { exists: true, valid: true, repaired: false });
+  });
+
   it('repairs invalid JSON using AI output and rewrites the file', async () => {
     const fullPath = path.join(workspace, '.gitea/ai-review/findings.json');
     fs.mkdirSync(path.dirname(fullPath), { recursive: true });
@@ -90,6 +101,20 @@ describe('json helpers', () => {
     assert.equal(fs.readFileSync(fullPath, 'utf8'), '[{"fixed":true}]\n');
   });
 
+  it('preserves a trailing newline returned by AI repair', async () => {
+    const fullPath = path.join(workspace, '.gitea/ai-review/findings.json');
+    fs.mkdirSync(path.dirname(fullPath), { recursive: true });
+    fs.writeFileSync(fullPath, '{broken', 'utf8');
+
+    const result = await validateJSONArrayFile(fullPath, '.gitea/ai-review/findings.json', async (_fullPath, _label, original) => {
+      assert.equal(original, '{broken');
+      return '[{"fixed":true}]\n';
+    });
+
+    assert.deepEqual(result, { exists: true, valid: true, repaired: true });
+    assert.equal(fs.readFileSync(fullPath, 'utf8'), '[{"fixed":true}]\n');
+  });
+
   it('throws when AI repair fails', async () => {
     const fullPath = path.join(workspace, '.gitea/ai-review/findings.json');
     fs.mkdirSync(path.dirname(fullPath), { recursive: true });