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]>

apps/web/app/components/settings/pi-shared.tsx

@@ -94,7 +94,7 @@ export function ModelInput({
         disabled={disabled}
         aria-invalid={invalid}
         autoComplete="off"
-        placeholder={placeholder ?? (models.length ? `从 ${models.length} 个模型中选,或手填 id` : "模型 id")}
+        placeholder={placeholder ?? (models.length ? `从 ${models.length} 个模型中选，或手填 id` : "模型 id")}
       />
       <datalist id={listId}>
         {models.map((m) => (