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/components/AgentSettingsPanel.tsx

@@ -157,10 +157,13 @@ export function AgentSettingsPanel({ rawOther, onChange }: AgentSettingsPanelPro
       </Card>
 
       <Card title={t("permissionRules")}>
-        {/* kimi-code 0.40.1 `[permission] dangerous_command_guard`. The env
+        {/* kimi-code `[permission] dangerous_command_guard`. The env
             var KIMI_CODE_DANGEROUS_COMMAND_GUARD (literal "true"/"false")
             outranks this config at runtime; no env-lock UI here (deliberate
-            minimal scope). Absent key = upstream default on. */}
+            minimal scope). Absent key = upstream default on. Since
+            kimi-code 0.41.0 the guard only gates Manual/YOLO modes —
+            Auto (never-ask) mode no longer intercepts dangerous
+            commands. */}
         <Checkbox
           label={t("permissionDangerousGuard")}
           checked={settings.permission?.dangerous_command_guard ?? true}