feat: 适配 kimi-code 0.41.0 —— 移除 file_history 镜像 + 守卫文案更新

- file_history flag 上游已移除（turn-level file history 恒开）：
  从 EXPERIMENTAL_FLAGS / env 探测 / FLAG_LABELS / i18n 全链路删除，
  清单回至 9 个；用户 config 残留键被上游静默忽略
- 危险命令守卫行为更新：auto 模式自 0.41.0 起不再拦截危险命令，
  仅 Manual/YOLO 强制询问——开关描述文案（中英）与类型注释同步

src/types/index.ts

@@ -151,9 +151,11 @@ export interface AgentSettings {
   background?: BackgroundConfig;
   permission?: {
     rules?: PermissionRule[];
-    /** kimi-code 0.40.1 `[permission]` key. Default true when the key is
-     *  absent: Auto mode refuses dangerous commands (rm -rf, shutdown,
-     *  dd of=, …) and other modes always prompt; false restores the
+    /** kimi-code `[permission]` key. Default true when the key is
+     *  absent: since 0.41.0 the guard only gates Manual/YOLO modes —
+     *  dangerous commands (rm -rf, shutdown, dd of=, …) and commands
+     *  that cannot be statically analyzed force a prompt, while Auto
+     *  (never-ask) mode no longer intercepts them; false restores the
      *  previous behavior. Env KIMI_CODE_DANGEROUS_COMMAND_GUARD (literal
      *  "true"/"false" only) outranks this config. */
     dangerous_command_guard?: boolean;