fix: update suggestions in exclusions.json to clarify handling of findings and LLM service provider maintenance

.gitea/ai-review/exclusions.json

@@ -71,8 +71,23 @@
     "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": "Leo",
+    "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"
+  },
+  {
+    "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"
   }
 ]