feat(cache): add cache health monitoring and validation system, see #730

- Add cache entry validator service for data integrity checks
- Add cache health monitor service for periodic health checks
- Enhance model cache and scanner with validation support
- Update websocket manager for health status broadcasting
- Add initialization banner service for cache health alerts
- Add comprehensive test coverage for new services
- Update translations across all locales
- Refactor sync translation keys script

locales/zh-CN.json

@@ -1572,6 +1572,20 @@
             "content": "来爱发电为Lora Manager项目发电，支持项目持续开发的同时，获取浏览器插件验证码，按季支付更优惠！支付宝/微信方便支付。感谢支持！🚀",
             "supportCta": "为LM发电",
             "learnMore": "浏览器插件教程"
+        },
+        "cacheHealth": {
+            "corrupted": {
+                "title": "检测到缓存损坏"
+            },
+            "degraded": {
+                "title": "检测到缓存问题"
+            },
+            "content": "{total} 个缓存条目中有 {invalid} 个无效（{rate}）。这可能导致模型丢失或错误。建议重建缓存。",
+            "rebuildCache": "重建缓存",
+            "dismiss": "忽略",
+            "rebuilding": "正在重建缓存...",
+            "rebuildFailed": "重建缓存失败：{error}",
+            "retry": "重试"
         }
     }
 }