feat: 添加缓存 Token 独立展示（cache_creation / cache_read）

从 logs 表 other JSON 字段提取 cache_creation_tokens 和 cache_tokens，
在排名、日志、聚合、详情页分别展示，total_tokens 包含缓存部分。

lib/i18n.tsx

@@ -53,6 +53,8 @@ const translations = {
     "th.calls": "调用次数",
     "th.input": "输入",
     "th.output": "输出",
+    "th.cacheCreation": "缓存创建",
+    "th.cacheRead": "缓存读取",
     "th.totalToken": "总 Token",
     "th.time": "时间",
     "th.realModel": "真实模型",
@@ -171,6 +173,8 @@ const translations = {
     "th.calls": "Calls",
     "th.input": "Input",
     "th.output": "Output",
+    "th.cacheCreation": "Cache Write",
+    "th.cacheRead": "Cache Read",
     "th.totalToken": "Total Token",
     "th.time": "Time",
     "th.realModel": "Real Model",