feat: persist hitl default config

web/static/i18n/en-US.json

@@ -819,6 +819,7 @@
     "hitlWhitelistHint": "Separate with commas or new lines; shown merged with the global allowlist in config.",
     "hitlApply": "Apply",
     "hitlApplyOkSync": "HITL settings saved and synced to the server.",
+    "hitlApplyOkDefaultConfig": "Default HITL settings saved to config.yaml and activated.",
     "hitlApplyOkWhitelistYaml": "Tool whitelist merged into config.yaml and active. Session settings are saved automatically.",
     "hitlApplyOkLocal": "Saved in this browser.",
     "hitlApplyFail": "Failed to sync to server",

web/static/i18n/zh-CN.json

@@ -807,6 +807,7 @@
     "hitlWhitelistHint": "白名单内工具免审批；每行一个或逗号分隔，与 config 全局白名单合并。",
     "hitlApply": "应用",
     "hitlApplyOkSync": "人机协同配置已保存并同步到服务器。",
+    "hitlApplyOkDefaultConfig": "人机协同默认配置已写入 config.yaml 并生效。",
     "hitlApplyOkWhitelistYaml": "免审批工具已合并进 config.yaml 并生效。会话配置会自动保存。",
     "hitlApplyOkLocal": "已保存到本浏览器。",
     "hitlApplyFail": "同步到服务器失败",