fix(web): 驗收報告 6 個問題修復

1. [Medium] Metrics Strip [object Object] — 移除 pendingApprovals 陣列直接渲染
   + label 硬編碼改 i18n (activeIncidents/serviceHealth/todayIncidents 等)
2. [Low] KB GET /{id} 不過濾 archived — get_by_id 加 status != ARCHIVED
3. [Low] favicon.ico 404 — 新增 NemoClaw SVG favicon + layout metadata
4. [Medium] auto-repair console errors — fetchEval 加 try-catch 靜默處理

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/api/src/repositories/knowledge_repository.py

@@ -55,9 +55,12 @@ class KnowledgeDBRepository:
         return self._to_model(record)
 
     async def get_by_id(self, entry_id: str) -> KnowledgeEntry | None:
-        """根據 ID 取得知識條目"""
+        """根據 ID 取得知識條目（排除 archived）"""
         result = await self.db.execute(
-            select(KnowledgeEntryRecord).where(KnowledgeEntryRecord.id == entry_id)
+            select(KnowledgeEntryRecord).where(
+                KnowledgeEntryRecord.id == entry_id,
+                KnowledgeEntryRecord.status != EntryStatus.ARCHIVED,
+            )
         )
         record = result.scalar_one_or_none()
         return self._to_model(record) if record else None