feat: enhance exclusions.json with new suggestions and refactor roles.js for dynamic path resolution

.gitea/ai-review/exclusions.json

@@ -183,5 +183,25 @@
     "role": "Maya",
     "location": "app/roles.js",
     "suggestion": "roles.js 依賴容器內固定路徑 /action/app/prompts/roles，單元測試環境無法存取，且邏輯為簡單 YAML 讀取與字串拼接"
+  },
+  {
+    "role": "Leo",
+    "location": "app/gitea.js",
+    "suggestion": "gitea.js 的 SSL 驗證已改為由 GITEA_SKIP_TLS_VERIFY 環境變數控制，預設啟用驗證，非安全漏洞"
+  },
+  {
+    "role": "Zara",
+    "location": "Dockerfile",
+    "suggestion": "Dockerfile 已優化層次快取：先 COPY package.json 再 npm install，最後才 COPY 其餘檔案"
+  },
+  {
+    "role": "Aria",
+    "location": "app/package.json",
+    "suggestion": "test 腳本已改為 node --test *.test.js，在 app/ 目錄下執行可自動發現所有測試檔案"
+  },
+  {
+    "role": "Zara",
+    "location": "app/main.js",
+    "suggestion": "deduplicateWithAI 和 filterFalsePositivesWithAI 為循序依賴流程（去重後才能過濾），無法平行化"
   }
 ]