style(copy): punctuation rules and site-wide fix with a CI check (QA U11)

- glossary: 10 punctuation rules (full-width in Chinese, CJK/Latin spacing,
  full-width parens around Chinese, single ellipsis, 「」 quotes, period rules)
- scripts/check-copy-punctuation.mjs: checks string literals, templates and JSX
  text (not comments, types, keys, match/compare strings); --fix, --strict,
  --by-file; wired into deno task ci as check:copy in warn mode
- --fix applied to web, server and contracts; files other lanes were editing
  (subscriptions, sites, browser, agent, auth/account, inventory) left for them
- tests updated for the changed messages

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/contracts/src/settings.ts

@@ -516,7 +516,7 @@ export const SETTINGS_SECTIONS: readonly SettingsSectionDef[] = [
   {
     id: "sites",
     label: "站点默认",
-    description: "新站点的限流、快照周期、UA 和代理;站点和凭证在站点页管理",
+    description: "新站点的限流、快照周期、UA 和代理；站点和凭证在站点页管理",
     legacyTabs: [{ tab: "site-credentials" }],
     anchors: [{ id: "defaults", label: "站点默认" }],
     fields: [