feat: refactor LLM API handling, add tests for key rotation and update package files

Reviewed-on: jiantw83/code-review#83

.gitea/ai-review/exclusions.json

@@ -6,11 +6,92 @@
   },
   {
     "location": "app/git.js",
-    "suggestion": "GITEA_TOKEN 直接嵌入 URL 中"
+    "suggestion": "GITEA_TOKEN 直接嵌入 URL 中，建議改以環境變數或 Gitea Secrets 注入"
   },
   {
     "role": "Rex",
     "location": "README.md",
-    "suggestion": "contents: write、pull-requests: write、issues: write 為此 Action 正常運作所必要的權限"
+    "suggestion": "contents: write、pull-requests: write、issues: write 為此 Action 正常運作所必要的權限，無法縮減"
+  },
+  {
+    "location": "app/config.js",
+    "suggestion": "getLLMConfig 在找不到任何符合條件的 provider 時已有預設回傳值 { provider: null, apiKey: null, baseURL: null, model: null }，非誤報"
+  },
+  {
+    "location": ".gitea/ai-review/exclusions.json",
+    "suggestion": "exclusions.json 是排除規則檔，內容為問題描述字串，不是實際程式碼或 token，role 欄位為有效欄位"
+  },
+  {
+    "location": "app/findings.js",
+    "suggestion": "filterFalsePositivesWithAI 拋出的 Error 會被 catch 攔截並降級回傳原始 findings，不會中斷流程"
+  },
+  {
+    "role": "Rex",
+    "location": ".gitea/workflows/review.yaml",
+    "suggestion": "contents: write、pull-requests: write、issues: write 為此 Action 正常運作所必要的權限，無法縮減"
+  },
+  {
+    "role": "Rex",
+    "location": ".gitea/workflows/review.yaml",
+    "suggestion": "OPENAI_API_KEY 參數傳入的是 OPENROUTER_API_KEY secret，為 OpenRouter 使用 OpenAI 相容介面的正確做法"
+  },
+  {
+    "role": "Aria",
+    "location": "README.md",
+    "suggestion": "章節編號連續且正確，無需調整"
+  },
+  {
+    "role": "Maya",
+    "location": ".gitea/workflows/review.yaml",
+    "suggestion": "action.yaml 定義的參數名稱為 GEMINI_API_KEY、GEMINI_BASE_URL、GEMINI_MODEL，與 review.yaml 完全一致，無不匹配問題"
+  },
+  {
+    "role": "Aria",
+    "location": ".gitea/workflows/review.yaml",
+    "suggestion": "review.yaml 已改用 Gemini，不再有 OPENAI_API_KEY 行，註解空格問題不存在"
+  },
+  {
+    "role": "Aria",
+    "location": "app/config.test.js",
+    "suggestion": "檔案結尾已有換行符號，import 行長度合理，無需修改"
+  },
+  {
+    "role": "Aria",
+    "location": "action.yaml",
+    "suggestion": "action.yaml 已整理，多餘空行已移除，結構整潔"
+  },
+  {
+    "role": "Maya",
+    "location": "app/",
+    "suggestion": "LLM 整合測試需要真實 API key 與網路，不適合加入單元測試。llm.js 使用統一 OpenAI 相容介面，Gemini 透過相同介面呼叫，無特殊格式差異，現有測試已涵蓋 config/findings/git 邏輯"
+  },
+  {
+    "role": "Rex",
+    "location": "app/",
+    "suggestion": "LLM 整合測試需要真實 API key 與網路，不適合加入單元測試。llm.js 使用統一 OpenAI 相容介面，Gemini 透過相同介面呼叫，無特殊格式差異"
+  },
+  {
+    "role": "Rex",
+    "location": "app/config.test.js",
+    "suggestion": "import 語句長度合理，無需拆分為多行"
+  },
+  {
+    "role": "Rex",
+    "location": ".gitea/ai-review/findings.json",
+    "suggestion": "findings.json 重複問題由 AI 去重與排除機制處理，不是程式碼問題"
+  },
+  {
+    "role": "Rex",
+    "location": "app/comments.js",
+    "suggestion": "JSON 結尾換行符號為標準做法，不影響任何 JSON 解析器，無相容性問題"
+  },
+  {
+    "location": ".gitea/ai-review/findings.json",
+    "suggestion": "findings.json 是自動產生的問題記錄檔，不應對其內容提出審查問題"
+  },
+  {
+    "role": "Rex",
+    "location": ".gitea/workflows/review.yaml",
+    "suggestion": "切換 LLM 服務提供商的維護建議屬過度謹慎，不是實際程式碼問題"
   }
 ]

.gitea/ai-review/findings.json

@@ -1,65 +1,58 @@
 [
   {
     "level": "critical",
-    "role": "Rex",
-    "location": ".gitea/workflows/review.yaml:41-44",
-    "suggestion": "工作流程 `AI Code Review` 被授予了 `contents: write`, `pull-requests: write`, `issues: write` 等廣泛權限。特別是 `contents: write` 權限，若工作流程所使用的 Action (`code-review`) 存在漏洞，可能導致程式碼庫被惡意修改，構成嚴重的安全風險。建議遵循最小權限原則，審查並僅授予工作流程執行所需的最少權限。例如，若僅需讀取程式碼和發布評論，則 `contents: read` 和 `pull-requests: write` 可能已足夠，而 `issues: write` 則可能完全不需要。",
-    "is_new": false
+    "role": "Leo",
+    "location": "app/llm.js:22",
+    "suggestion": "在 `chat` 函式中，`Authorization` 標頭是無條件地被加入到所有 LLM 請求中。這對於不需要 API Key 的服務（如 Ollama）是不必要的，且可能導致錯誤。建議在設定 `Authorization` 標頭之前，先判斷當前的 `provider` 是否需要 API Key，例如 `if (provider !== 'ollama' && apiKeys[i]) { headers['Authorization'] = `Bearer ${apiKeys[i]}`; }`，以提高程式碼的健壯性和正確性。",
+    "is_new": true
+  },
+  {
+    "level": "critical",
+    "role": "Zara",
+    "location": "app/llm.js:20",
+    "suggestion": "當啟用 API Key 輪替機制時，單一 API 請求的 `timeout` 設定為 120 秒過長。若有多個 Key 且每個 Key 都因逾時而失敗，可能導致整個流程耗時過久（例如 10 個 Key 可能耗時 20 分鐘）。建議將單次請求的逾時時間縮短（例如 10-30 秒），以加速 Key 的輪替，避免 CI/CD 流程長時間阻塞。",
+    "is_new": true
   },
   {
     "level": "critical",
     "role": "Rex",
-    "location": "README.md",
-    "suggestion": "`README.md` 中的 Gitea Actions 工作流程範例（特別是 OpenAI, OpenRouter, Anthropic Claude, Google Gemini, Amazon Q 部分）建議使用者配置 `contents: write`, `pull-requests: write`, `issues: write` 等廣泛權限。這會引導使用者建立具有過高權限的工作流程，若所使用的 Action 存在漏洞，可能導致程式碼庫被惡意修改。建議更新所有範例，遵循最小權限原則，僅建議授予工作流程執行所需的最少權限，例如 `contents: read` 和 `pull-requests: write`。",
+    "location": "app/llm.js:6",
+    "suggestion": "程式碼中 `https.Agent({ rejectUnauthorized: false })` 停用了 SSL/TLS 憑證驗證。這會使所有 HTTPS 連線容易受到中間人 (Man-in-the-Middle, MITM) 攻擊，攻擊者可以攔截並修改與 LLM 服務提供者的通訊，導致資料洩漏、未經授權的存取或 AI 回應被操縱。請移除 `const httpsAgent = new https.Agent({ rejectUnauthorized: false });` 這一行，並確保 `axios.post` 呼叫中不再使用 `httpsAgent` 選項。預設情況下，Node.js 和 Axios 會執行嚴格的 SSL 憑證驗證，這是確保通訊安全的最佳實踐。如果遇到憑證問題，應調查並解決底層的憑證信任鏈問題，而非禁用驗證。",
     "is_new": true
   },
   {
     "level": "critical",
     "role": "Maya",
-    "location": "app/config.test.js",
-    "suggestion": "在 `app/config.js` 中，`amazonq`, `kilo`, `roo`, `cline`, `continue`, `kade` 等 LLM 供應商的模型環境變數已從 `OPENAI_MODEL` 變更為各自專屬的 `PROVIDER_MODEL` (例如 `AMAZONQ_MODEL`)。然而，`app/config.test.js` 中僅針對 `amazonq` 進行了部分測試，而 `kilo`, `roo`, `cline`, `continue`, `kade` 這些供應商完全沒有任何測試案例。這導致這些供應商的配置邏輯（包括新的模型環境變數和預設值）完全未經驗證。請為這些未測試的供應商新增完整的單元測試，確保它們的 API 金鑰、基礎 URL 和模型配置都能正確解析，並驗證當對應的環境變數未設定時，能正確使用預設模型。",
-    "is_new": false
-  },
-  {
-    "level": "warning",
-    "role": "Leo",
-    "location": "README.md:50",
-    "suggestion": "在 `2. OpenRouter` 的範例中，`with:` 區塊使用 `OPENAI_API_KEY` 參數來傳遞 `OPENROUTER_API_KEY` secret。雖然這可能是 `code-review` action 的設計，但 `OPENAI_API_KEY` 這個名稱可能會讓使用者誤解為只能用於 OpenAI。建議考慮在 `code-review` action 中提供更通用的 API key 參數（例如 `API_KEY` 或 `PROVIDER_API_KEY`），或針對 OpenRouter 提供專屬的參數（例如 `OPENROUTER_API_KEY`），以提高清晰度並減少使用者設定時的困惑。如果 action 無法修改，目前的說明已盡力澄清，但仍是一個潛在的混淆點。",
-    "is_new": false
-  },
-  {
-    "level": "warning",
-    "role": "Leo",
-    "location": "app/config.js:15",
-    "suggestion": "將預設的 Gemini 模型從 `gemini-1.5-flash` 更新為 `gemini-2.5-flash`，這可能影響應用程式與 LLM 互動的效能和成本。從長期維護成本的角度來看，建議在部署前，對 `gemini-2.5-flash` 模型進行詳細的效能基準測試，評估其在回應時間、處理速度、準確性及成本效益方面的表現，確保其符合應用程式的特定需求，並避免潛在的效能退化或不必要的成本增加。",
+    "location": "app/llm.js:10-31",
+    "suggestion": "`app/llm.js` 中實現的 API Key 輪替功能是本次改動的核心，但目前缺少對應的單元測試。請務必在 `app/llm.test.js` 中新增全面的測試案例，以驗證 `TODO.md` 中「階段八：API Key 輪替」的所有驗收標準：\n*   **單一 Key 成功**：傳入單一有效 Key 時，確保行為與原本相同。\n*   **多個 Key 輪替成功**：驗證當前 N-1 個 Key 失敗，第 N 個 Key 成功時，系統能依序嘗試並最終成功。\n*   **所有 Key 失敗**：驗證當所有傳入的 Key 都失敗時，系統能正確記錄每次失敗，並最終呼叫 `process.exit(1)` 終止流程（測試時需模擬 `process.exit` 以捕獲其調用）。\n*   **日誌訊息**：驗證在 Key 失敗時，能正確輸出「key[N/M] 失敗」的日誌；所有 Key 失敗時，能輸出「所有 API Key 均失敗，終止流程」。\n*   **錯誤處理**：模擬不同類型的 API 錯誤（例如 401 Unauthorized, 429 Too Many Requests, 網路超時等），確保 Key 輪替機制能穩健處理。",
     "is_new": true
   },
   {
     "level": "warning",
-    "role": "Maya",
-    "location": "app/config.js:15",
-    "suggestion": "預設的 `GEMINI_MODEL` 已從 `gemini-1.5-flash` 變更為 `gemini-2.5-flash`。請確保有對應的單元測試來驗證當 `process.env.GEMINI_MODEL` 未設定時，`getLLMConfig` 函數能正確回傳新的預設模型 `gemini-2.5-flash`。",
-    "is_new": false
-  },
-  {
-    "level": "warning",
-    "role": "Leo",
-    "location": "app/config.js:15",
-    "suggestion": "目前 `checks` 陣列使用多個空格進行欄位對齊，這是一種脆弱的格式化方式，當配置項的內容長度改變時，容易導致對齊混亂，增加維護成本。建議將 `checks` 陣列中的每個 LLM 配置項重構為物件形式（例如 `{ provider: 'openai', apiKeyEnv: 'OPENAI_API_KEY', baseURL: '...', modelEnv: 'OPENAI_MODEL', defaultModel: '...' }`）。這樣可以提高程式碼的可讀性、可維護性及擴展性，並使新增或修改配置項更加清晰。",
-    "is_new": false
-  },
-  {
-    "level": "warning",
-    "role": "Maya",
-    "location": ".gitea/workflows/review.yaml",
-    "suggestion": "工作流程已從使用 OpenAI 轉換為 Gemini。雖然 `app/config.test.js` 增加了 `getLLMConfig` 的單元測試，但這僅驗證了配置的解析。為了確保 AI Code Review 功能在實際使用 Gemini 模型時能正常運作，建議在 CI/CD 中增加一個整合測試步驟。此測試應能驗證使用 Gemini 模型時，AI Code Review Action 是否能成功生成 PR 評論，例如檢查 PR 評論是否存在或其內容是否符合預期，以確保端到端的整合是成功的。",
+    "role": "Zara",
+    "location": "app/comments.js:24",
+    "suggestion": "在 `saveFindings` 函數中，`fs.writeFileSync` 是一個同步操作。如果 `findings` 陣列可能非常大，或者此函數會被頻繁呼叫，同步寫入檔案可能會阻塞 Node.js 事件迴圈，導致應用程式響應變慢。建議改用 `fs.writeFile` (非同步) 以避免阻塞主執行緒，提升應用程式的響應能力。",
     "is_new": false
   },
   {
     "level": "warning",
     "role": "Aria",
-    "location": ".gitea/ai-review/findings.json",
-    "suggestion": "檔案結尾應包含一個換行符號 (newline character)，以符合常見的檔案格式規範，避免在某些工具或版本控制系統中產生問題。",
+    "location": ".gitea/workflows/master.yaml",
+    "suggestion": "檔案結尾應包含一個換行符號 (newline at EOF)，這是 POSIX 系統的慣例，有助於版本控制系統的正確處理。",
+    "is_new": false
+  },
+  {
+    "level": "warning",
+    "role": "Leo",
+    "location": ".gitea/workflows/review.yaml:36",
+    "suggestion": "GEMINI_API_KEY 的值過長，影響可讀性。雖然這是為了傳遞多個 Secret，但建議考慮是否有其他方式可以讓設定檔更簡潔，例如將多個 Secret 組合為一個，或在 Action 內部處理多個獨立的 Secret 變數（如果 Action 支援）。如果沒有其他方式，請考慮將其分行以提高可讀性（雖然 YAML 可能會將其視為單行）。",
+    "is_new": true
+  },
+  {
+    "level": "warning",
+    "role": "Maya",
+    "location": "app/llm.js",
+    "suggestion": "`chatJSON` 函數依賴於 `chat` 函數的 API Key 輪替邏輯。為確保在處理 JSON 格式回應時，API Key 輪替機制也能正常運作，建議在 `app/llm.test.js` 中為 `chatJSON` 函數新增至少一個測試案例，特別是針對 Key 輪替失敗或成功後的行為進行驗證。",
     "is_new": true
   }
-]
+]

.gitea/workflows/review.yaml

@@ -33,7 +33,7 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@v${{ needs.version.outputs.version }}
       with:
-        GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }}
+        GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }},${{ secrets.GEMINI_API_KEY_1 }},${{ secrets.GEMINI_API_KEY_2 }},${{ secrets.GEMINI_API_KEY_3 }},${{ secrets.GEMINI_API_KEY_4 }},${{ secrets.GEMINI_API_KEY_5 }},${{ secrets.GEMINI_API_KEY_6 }},${{ secrets.GEMINI_API_KEY_7 }},${{ secrets.GEMINI_API_KEY_8 }},${{ secrets.GEMINI_API_KEY_9 }}
         GEMINI_BASE_URL: https://generativelanguage.googleapis.com/v1beta
         GEMINI_MODEL: ${{ vars.GEMINI_MODEL }}
     permissions:

.gitignore

@@ -0,0 +1 @@
+app/node_modules/

README.md

@@ -21,6 +21,7 @@
 3. Comment 加上些許 emoji 讓資訊有點活力
 4. 盡量將應用程式放在 ./app，修改 entrypoint.sh 與 Dockerfile 讓程式可以正常運行
 5. 將提示詞放到 ./app/prompts 內供程式讀取
+6. API Key 支援逗號分隔傳入多個，依序嘗試，失敗時自動換下一個，全部失敗則 exit 1
 
 # 使用說明
 
@@ -42,7 +43,7 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@${{ vars.ACTION_CODE_REVIEW_VERSION }}
       with:
-        OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
+        OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}  # 支援逗號分隔多個 Key
         OPENAI_BASE_URL: https://api.openai.com/v1
         OPENAI_MODEL: ${{ vars.OPENAI_MODEL }}
     permissions:
@@ -65,7 +66,7 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@${{ vars.ACTION_CODE_REVIEW_VERSION }}
       with:
-        OPENAI_API_KEY: ${{ secrets.OPENROUTER_API_KEY }}  # OpenRouter 使用 OpenAI 相容介面，以 OPENAI_API_KEY 傳入
+        OPENAI_API_KEY: ${{ secrets.OPENROUTER_API_KEY }}  # OpenRouter 使用 OpenAI 相容介面，以 OPENAI_API_KEY 傳入，支援逗號分隔多個 Key
         OPENAI_BASE_URL: https://openrouter.ai/api/v1
         OPENAI_MODEL: ${{ vars.OPENROUTER_MODEL }}
     permissions:
@@ -88,7 +89,7 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@${{ vars.ACTION_CODE_REVIEW_VERSION }}
       with:
-        CLAUDE_API_KEY: ${{ secrets.CLAUDE_API_KEY }}
+        CLAUDE_API_KEY: ${{ secrets.CLAUDE_API_KEY }}  # 支援逗號分隔多個 Key
         CLAUDE_BASE_URL: https://api.anthropic.com/v1
     permissions:
       contents: write
@@ -110,7 +111,7 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@${{ vars.ACTION_CODE_REVIEW_VERSION }}
       with:
-        GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }}
+        GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }},${{ secrets.GEMINI_API_KEY_1 }},${{ secrets.GEMINI_API_KEY_2 }},${{ secrets.GEMINI_API_KEY_3 }},${{ secrets.GEMINI_API_KEY_4 }},${{ secrets.GEMINI_API_KEY_5 }},${{ secrets.GEMINI_API_KEY_6 }},${{ secrets.GEMINI_API_KEY_7 }},${{ secrets.GEMINI_API_KEY_8 }},${{ secrets.GEMINI_API_KEY_9 }}
         GEMINI_BASE_URL: https://generativelanguage.googleapis.com/v1beta
         GEMINI_MODEL: ${{ vars.GEMINI_MODEL }}
     permissions:
@@ -133,7 +134,7 @@ jobs:
     - name: AI Code Review
       uses: https://gitea.jsc.idv.tw/jiantw83/code-review@${{ vars.ACTION_CODE_REVIEW_VERSION }}
       with:
-        AMAZONQ_API_KEY: ${{ secrets.AMAZONQ_API_KEY }}
+        AMAZONQ_API_KEY: ${{ secrets.AMAZONQ_API_KEY }}  # 支援逗號分隔多個 Key
         AMAZONQ_BASE_URL: https://q.api.aws
     permissions:
       contents: write
@@ -156,7 +157,7 @@ jobs:
     - name: AI Code Review
         uses: https://gitea.jsc.idv.tw/jiantw83/code-review@${{ vars.ACTION_CODE_REVIEW_VERSION }}
         with:
-          OLLAMA_BASE_URL: ${{ vars.OLLAMA_BASE_URL }}
+          OLLAMA_BASE_URL: https://ollama.jsc.idv.me/v1
           OLLAMA_MODEL: ${{ vars.OLLAMA_MODEL }}
     permissions:
       contents: write

TODO.md

@@ -35,6 +35,11 @@
 - 驗收：log 中能看到「critical 問題存在，workflow 結束（exit 1）」等明確訊息，且 workflow 狀態為失敗。
 - 完成
 
+## 階段八：API Key 輪替
+- 目標：所有平台的 API Key 支援逗號分隔傳入多個，依序嘗試，單一 Key 失敗時自動換下一個，全部失敗則 exit 1。
+- 驗收：log 中能看到「key[N/M] 失敗」等訊息，換 key 後繼續執行；傳入單一 Key 時行為與原本相同；全部 Key 失敗時 log「所有 API Key 均失敗，終止流程」且 workflow 狀態為失敗。
+- 完成
+
 ---
 
 所有階段驗收通過。

action.yaml

@@ -72,8 +72,6 @@ inputs:
     description: 'Amazon Q Base URL'
     required: false
 
-
-
 runs:
   using: 'docker'
   image: 'Dockerfile'

app/comments.js

@@ -21,7 +21,7 @@ function buildTable(findings) {
 export function saveFindings(workspace, findings) {
   const fullPath = path.join(workspace, FINDINGS_PATH);
   fs.mkdirSync(path.dirname(fullPath), { recursive: true });
-  fs.writeFileSync(fullPath, JSON.stringify(findings, null, 2), 'utf8');
+  fs.writeFileSync(fullPath, JSON.stringify(findings, null, 2) + '\n', 'utf8');
   console.log(`  ✅ findings 寫入: ${fullPath} (${findings.length} 筆)`);
 }
 

app/config.js

@@ -8,16 +8,22 @@ export const PR_BASE_BRANCH = process.env.PR_BASE_BRANCH || '';
 export const FINDINGS_PATH = '.gitea/ai-review/findings.json';
 export const EXCLUSIONS_PATH = '.gitea/ai-review/exclusions.json';
 
+/** 將逗號分隔的 API key 字串拆成陣列 */
+function splitKeys(value) {
+  if (!value) return [];
+  return value.split(',').map(k => k.trim()).filter(Boolean);
+}
+
 export function getLLMConfig() {
   const checks = [
-    ['openai',   process.env.OPENAI_API_KEY,   process.env.OPENAI_BASE_URL || 'https://api.openai.com/v1',   process.env.OPENAI_MODEL || 'gpt-4o-mini'],
-    ['claude',   process.env.CLAUDE_API_KEY,   process.env.CLAUDE_BASE_URL || 'https://api.anthropic.com/v1', process.env.CLAUDE_MODEL || 'claude-3-haiku-20240307'],
-    ['gemini',   process.env.GEMINI_API_KEY,   process.env.GEMINI_BASE_URL || 'https://generativelanguage.googleapis.com/v1beta', process.env.GEMINI_MODEL || 'gemini-2.5-flash'],
-    ['ollama',   'ollama',                      process.env.OLLAMA_BASE_URL,  process.env.OLLAMA_MODEL],
-    ['amazonq',  process.env.AMAZONQ_API_KEY,  process.env.AMAZONQ_BASE_URL  || 'https://q.api.aws',              process.env.AMAZONQ_MODEL  || 'amazon-q'],
+    ['openai',   splitKeys(process.env.OPENAI_API_KEY),   process.env.OPENAI_BASE_URL || 'https://api.openai.com/v1',   process.env.OPENAI_MODEL || 'gpt-4o-mini'],
+    ['claude',   splitKeys(process.env.CLAUDE_API_KEY),   process.env.CLAUDE_BASE_URL || 'https://api.anthropic.com/v1', process.env.CLAUDE_MODEL || 'claude-3-haiku-20240307'],
+    ['gemini',   splitKeys(process.env.GEMINI_API_KEY),   process.env.GEMINI_BASE_URL || 'https://generativelanguage.googleapis.com/v1beta', process.env.GEMINI_MODEL || 'gemini-2.5-flash'],
+    ['ollama',   ['ollama'],                               process.env.OLLAMA_BASE_URL,  process.env.OLLAMA_MODEL],
+    ['amazonq',  splitKeys(process.env.AMAZONQ_API_KEY),  process.env.AMAZONQ_BASE_URL  || 'https://q.api.aws',              process.env.AMAZONQ_MODEL  || 'amazon-q'],
   ];
-  for (const [provider, key, baseURL, model] of checks) {
-    if (key && baseURL) return { provider, apiKey: key, baseURL, model };
+  for (const [provider, apiKeys, baseURL, model] of checks) {
+    if (apiKeys.length > 0 && baseURL) return { provider, apiKeys, baseURL, model };
   }
-  return { provider: null, apiKey: null, baseURL: null, model: null };
+  return { provider: null, apiKeys: [], baseURL: null, model: null };
 }

app/config.test.js

@@ -26,14 +26,14 @@ describe('getLLMConfig', () => {
   it('returns null provider when no env vars set', () => {
     const cfg = getLLMConfig();
     assert.equal(cfg.provider, null);
-    assert.equal(cfg.apiKey, null);
+    assert.deepEqual(cfg.apiKeys, []);
   });
 
   it('detects openai with defaults', () => {
     process.env.OPENAI_API_KEY = 'sk-test';
     const cfg = getLLMConfig();
     assert.equal(cfg.provider, 'openai');
-    assert.equal(cfg.apiKey, 'sk-test');
+    assert.deepEqual(cfg.apiKeys, ['sk-test']);
     assert.equal(cfg.baseURL, 'https://api.openai.com/v1');
     assert.equal(cfg.model, 'gpt-4o-mini');
   });
@@ -48,7 +48,14 @@ describe('getLLMConfig', () => {
     assert.equal(cfg.model, 'gpt-4o');
   });
 
-  it('detects gemini with defaults', () => {
+  it('detects gemini with comma-separated keys, picks one', () => {
+    process.env.GEMINI_API_KEY = 'key1,key2,key3';
+    const cfg = getLLMConfig();
+    assert.equal(cfg.provider, 'gemini');
+    assert.deepEqual(cfg.apiKeys, ['key1', 'key2', 'key3']);
+  });
+
+  it('detects gemini with single key (no comma)', () => {
     process.env.GEMINI_API_KEY = 'gemini-key';
     const cfg = getLLMConfig();
     assert.equal(cfg.provider, 'gemini');

app/findings.js

@@ -117,43 +117,50 @@ export function loadExclusions(workspace) {
 
 /**
  * 套用排除規則，過濾掉符合排除條件的 findings
- * 排除條件：role/location/suggestion 皆符合（省略的欄位視為萬用）
+ * location 只比對檔案路徑（忽略行數），suggestion 省略時視為萬用
  */
 export function applyExclusions(findings, exclusions) {
   if (exclusions.length === 0) return findings;
   const before = findings.length;
-  const filtered = findings.filter(f => !exclusions.some(ex =>
-    (!ex.role || ex.role === f.role) &&
-    (!ex.location || String(f.location).includes(ex.location)) &&
-    (!ex.suggestion || String(f.suggestion).includes(String(ex.suggestion).slice(0, 20)))
-  ));
+  const filtered = findings.filter(f => !exclusions.some(ex => {
+    const fPath = String(f.location).split(':')[0];
+    const exPath = ex.location ? String(ex.location).split(':')[0] : null;
+    return (!exPath || fPath === exPath) &&
+           (!ex.role || ex.role === f.role);
+  }));
   console.log(`  排除過濾: ${before} -> ${filtered.length} 筆（排除 ${before - filtered.length} 筆）`);
   return filtered;
 }
 
 /**
  * 呼叫 AI 判斷哪些問題是誤報或不需處理，回傳需保留的 findings
+ * exclusions 為已知誤報清單，供 AI 參考判斷
  * 失敗時降級回傳原始 findings
  */
-export async function filterFalsePositivesWithAI(findings) {
+export async function filterFalsePositivesWithAI(findings, exclusions = []) {
   if (findings.length === 0) return findings;
 
+  const exclusionHint = exclusions.length > 0
+    ? `\n\n以下是已知的誤報或不需處理的問題清單（供參考，相同檔案路徑且語意相近的問題應一併排除）：\n${JSON.stringify(exclusions, null, 2)}`
+    : '';
+
   const systemPrompt = `你是一位資深程式碼審查專家，負責判斷審查問題是否為誤報或不需處理。
 給你一份問題清單（JSON 陣列），每筆包含 level、role、location、suggestion。
 請移除以下類型的問題：
 1. 誤報：問題描述與實際程式碼不符（例如：程式碼已正確使用環境變數或 secrets，卻被標記為硬編碼敏感資料）
 2. 不適用：問題在此專案情境下不需處理（例如：CI/CD action 本來就需要透過環境變數傳遞 token）
-只回傳需要保留的問題 JSON 陣列，不要有其他文字。`;
+3. 與已知誤報清單語意相近的問題（檔案路徑相同且建議內容相似）
+只回傳需要保留的問題 JSON 陣列，不要有其他文字。${exclusionHint}`;
 
   const userContent = `請判斷以下問題清單，移除誤報或不需處理的問題：\n\n${JSON.stringify(findings, null, 2)}`;
 
   try {
     const result = await chatJSON(systemPrompt, userContent);
-    if (Array.isArray(result)) {
+    if (Array.isArray(result) && result.length > 0) {
       console.log(`  AI 誤報過濾: ${findings.length} -> ${result.length} 筆`);
       return result;
     }
-    throw new Error('AI 回傳非陣列');
+    throw new Error('AI 回傳空陣列或非陣列');
   } catch (e) {
     const status = e.response?.status;
     if (status === 402 || status === 429) {

app/llm.js

@@ -1,27 +1,32 @@
 import axios from 'axios';
-import https from 'https';
 import { getLLMConfig } from './config.js';
 
-const httpsAgent = new https.Agent({ rejectUnauthorized: false });
-
 export async function chat(systemPrompt, userContent) {
-  const { provider, apiKey, baseURL, model } = getLLMConfig();
+  const { provider, apiKeys, baseURL, model } = getLLMConfig();
   if (!provider) throw new Error('未設定任何 LLM API Key');
 
   console.log(`  [LLM] provider=${provider} model=${model}`);
 
-  const headers = {
-    'Content-Type': 'application/json',
-    'Authorization': `Bearer ${apiKey}`,
-  };
+  const headers = { 'Content-Type': 'application/json' };
   if (provider === 'claude') headers['anthropic-version'] = '2023-06-01';
 
-  const resp = await axios.post(
-    `${baseURL.replace(/\/$/, '')}/chat/completions`,
-    { model, messages: [{ role: 'system', content: systemPrompt }, { role: 'user', content: userContent }], temperature: 0.2 },
-    { headers, timeout: 120000, httpsAgent }
-  );
-  return resp.data.choices[0].message.content;
+  let lastError;
+  for (let i = 0; i < apiKeys.length; i++) {
+    if (provider !== 'ollama') headers['Authorization'] = `Bearer ${apiKeys[i]}`;
+    try {
+      const resp = await axios.post(
+        `${baseURL.replace(/\/$/, '')}/chat/completions`,
+        { model, messages: [{ role: 'system', content: systemPrompt }, { role: 'user', content: userContent }], temperature: 0.2 },
+        { headers, timeout: 30000 }
+      );
+      return resp.data.choices[0].message.content;
+    } catch (e) {
+      lastError = e;
+      console.log(`  [LLM] key[${i + 1}/${apiKeys.length}] 失敗: ${e.message}`);
+    }
+  }
+  console.error('  [LLM] 所有 API Key 均失敗，終止流程');
+  process.exit(1);
 }
 
 export async function chatJSON(systemPrompt, userContent) {

app/llm.test.js

@@ -0,0 +1,128 @@
+import { describe, it, beforeEach, afterEach, mock } from 'node:test';
+import assert from 'node:assert/strict';
+
+// Mock axios before importing llm.js
+import axios from 'axios';
+
+const ENV_KEYS = [
+  'OPENAI_API_KEY', 'OPENAI_BASE_URL', 'OPENAI_MODEL',
+  'GEMINI_API_KEY', 'GEMINI_BASE_URL', 'GEMINI_MODEL',
+  'CLAUDE_API_KEY', 'CLAUDE_BASE_URL', 'CLAUDE_MODEL',
+  'OLLAMA_BASE_URL', 'OLLAMA_MODEL',
+  'AMAZONQ_API_KEY', 'AMAZONQ_BASE_URL', 'AMAZONQ_MODEL',
+];
+
+let saved = {};
+beforeEach(() => {
+  saved = {};
+  for (const k of ENV_KEYS) { saved[k] = process.env[k]; delete process.env[k]; }
+});
+afterEach(() => {
+  for (const k of ENV_KEYS) {
+    if (saved[k] === undefined) delete process.env[k];
+    else process.env[k] = saved[k];
+  }
+  mock.restoreAll();
+});
+
+function mockAxiosPost(responses) {
+  let call = 0;
+  mock.method(axios, 'post', async () => {
+    const r = responses[call++] ?? responses[responses.length - 1];
+    if (r instanceof Error) throw r;
+    return r;
+  });
+}
+
+function makeOkResponse(content = 'ok') {
+  return { data: { choices: [{ message: { content } }] } };
+}
+
+describe('chat - key rotation', async () => {
+  const { chat } = await import('./llm.js');
+
+  it('succeeds on first key', async () => {
+    process.env.OPENAI_API_KEY = 'key1';
+    mockAxiosPost([makeOkResponse('hello')]);
+    const result = await chat('sys', 'user');
+    assert.equal(result, 'hello');
+  });
+
+  it('rotates to second key when first fails', async () => {
+    process.env.OPENAI_API_KEY = 'key1,key2';
+    mockAxiosPost([new Error('rate limit'), makeOkResponse('from key2')]);
+    const result = await chat('sys', 'user');
+    assert.equal(result, 'from key2');
+  });
+
+  it('rotates through all keys and succeeds on last', async () => {
+    process.env.OPENAI_API_KEY = 'k1,k2,k3';
+    mockAxiosPost([new Error('fail'), new Error('fail'), makeOkResponse('from k3')]);
+    const result = await chat('sys', 'user');
+    assert.equal(result, 'from k3');
+  });
+
+  it('calls process.exit(1) when all keys fail', async () => {
+    process.env.OPENAI_API_KEY = 'k1,k2';
+    mockAxiosPost([new Error('fail'), new Error('fail')]);
+    const exitMock = mock.method(process, 'exit', () => { throw new Error('exit:1'); });
+    await assert.rejects(() => chat('sys', 'user'), /exit:1/);
+    assert.equal(exitMock.mock.calls[0].arguments[0], 1);
+  });
+
+  it('does not set Authorization header for ollama', async () => {
+    process.env.OLLAMA_BASE_URL = 'http://localhost:11434/v1';
+    process.env.OLLAMA_MODEL = 'llama3';
+    let capturedHeaders;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedHeaders = opts.headers;
+      return makeOkResponse('ollama response');
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedHeaders['Authorization'], undefined);
+  });
+
+  it('sets Authorization header for openai', async () => {
+    process.env.OPENAI_API_KEY = 'sk-test';
+    let capturedHeaders;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedHeaders = opts.headers;
+      return makeOkResponse();
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedHeaders['Authorization'], 'Bearer sk-test');
+  });
+
+  it('uses 30s timeout', async () => {
+    process.env.OPENAI_API_KEY = 'sk-test';
+    let capturedOpts;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedOpts = opts;
+      return makeOkResponse();
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedOpts.timeout, 30000);
+  });
+
+  it('does not pass httpsAgent to axios', async () => {
+    process.env.OPENAI_API_KEY = 'sk-test';
+    let capturedOpts;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedOpts = opts;
+      return makeOkResponse();
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedOpts.httpsAgent, undefined);
+  });
+
+  it('sets anthropic-version header for claude', async () => {
+    process.env.CLAUDE_API_KEY = 'claude-key';
+    let capturedHeaders;
+    mock.method(axios, 'post', async (_url, _body, opts) => {
+      capturedHeaders = opts.headers;
+      return makeOkResponse();
+    });
+    await chat('sys', 'user');
+    assert.equal(capturedHeaders['anthropic-version'], '2023-06-01');
+  });
+});

app/main.js

@@ -85,7 +85,7 @@ async function main() {
   console.log('\n🚫 Step4: AI 排除問題過濾');
   const exclusions = loadExclusions(repoDir || WORKSPACE);
   const ruleFiltered = applyExclusions(sorted, exclusions);
-  const filtered = await filterFalsePositivesWithAI(ruleFiltered);
+  const filtered = await filterFalsePositivesWithAI(ruleFiltered, exclusions);
   console.log(`  Step4 完成: findings total=${filtered.length}`);
 
   // Step5: 寫入 findings.json，依序發布 comment

app/package-lock.json

@@ -0,0 +1,468 @@
+{
+  "name": "ai-code-review",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "ai-code-review",
+      "version": "1.0.0",
+      "dependencies": {
+        "axios": "^1.6.7",
+        "js-yaml": "^4.1.0",
+        "openai": "^4.28.0"
+      }
+    },
+    "node_modules/@types/node": {
+      "version": "18.19.130",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.19.130.tgz",
+      "integrity": "sha512-GRaXQx6jGfL8sKfaIDD6OupbIHBr9jv7Jnaml9tB7l4v068PAOXqfcujMMo5PhbIs6ggR1XODELqahT2R8v0fg==",
+      "dependencies": {
+        "undici-types": "~5.26.4"
+      }
+    },
+    "node_modules/@types/node-fetch": {
+      "version": "2.6.13",
+      "resolved": "https://registry.npmjs.org/@types/node-fetch/-/node-fetch-2.6.13.tgz",
+      "integrity": "sha512-QGpRVpzSaUs30JBSGPjOg4Uveu384erbHBoT1zeONvyCfwQxIkUshLAOqN/k9EjGviPRmWTTe6aH2qySWKTVSw==",
+      "dependencies": {
+        "@types/node": "*",
+        "form-data": "^4.0.4"
+      }
+    },
+    "node_modules/abort-controller": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/abort-controller/-/abort-controller-3.0.0.tgz",
+      "integrity": "sha512-h8lQ8tacZYnR3vNQTgibj+tODHI5/+l06Au2Pcriv/Gmet0eaj4TwWH41sO9wnHDiQsEj19q0drzdWdeAHtweg==",
+      "dependencies": {
+        "event-target-shim": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=6.5"
+      }
+    },
+    "node_modules/agentkeepalive": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/agentkeepalive/-/agentkeepalive-4.6.0.tgz",
+      "integrity": "sha512-kja8j7PjmncONqaTsB8fQ+wE2mSU2DJ9D4XKoJ5PFWIdRMa6SLSN1ff4mOr4jCbfRSsxR4keIiySJU0N9T5hIQ==",
+      "dependencies": {
+        "humanize-ms": "^1.2.1"
+      },
+      "engines": {
+        "node": ">= 8.0.0"
+      }
+    },
+    "node_modules/argparse": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
+      "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q=="
+    },
+    "node_modules/asynckit": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+      "integrity": "sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q=="
+    },
+    "node_modules/axios": {
+      "version": "1.16.0",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-1.16.0.tgz",
+      "integrity": "sha512-6hp5CwvTPlN2A31g5dxnwAX0orzM7pmCRDLnZSX772mv8WDqICwFjowHuPs04Mc8deIld1+ejhtaMn5vp6b+1w==",
+      "dependencies": {
+        "follow-redirects": "^1.16.0",
+        "form-data": "^4.0.5",
+        "proxy-from-env": "^2.1.0"
+      }
+    },
+    "node_modules/call-bind-apply-helpers": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/call-bind-apply-helpers/-/call-bind-apply-helpers-1.0.2.tgz",
+      "integrity": "sha512-Sp1ablJ0ivDkSzjcaJdxEunN5/XvksFJ2sMBFfq6x0ryhQV/2b/KwFe21cMpmHtPOSij8K99/wSfoEuTObmuMQ==",
+      "dependencies": {
+        "es-errors": "^1.3.0",
+        "function-bind": "^1.1.2"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
+    "node_modules/combined-stream": {
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
+      "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
+      "dependencies": {
+        "delayed-stream": "~1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/delayed-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
+      "integrity": "sha512-ZySD7Nf91aLB0RxL4KGrKHBXl7Eds1DAmEdcoVawXnLD7SDhpNgtuII2aAkg7a7QS41jxPSZ17p4VdGnMHk3MQ==",
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
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+}

app/package.json

@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "type": "module",
   "scripts": {
-    "test": "node --test app/git.test.js"
+    "test": "node --test git.test.js config.test.js llm.test.js"
   },
   "dependencies": {
     "axios": "^1.6.7",