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/agentui/file-diff.tsx

@@ -85,7 +85,9 @@ export function FileDiff({
                   {l.type === "added" ? "+" : l.type === "removed" ? "−" : " "}
                 </span>
                 <span className="min-w-0 break-all text-foreground/85">
-                  <span className="sr-only">{l.type === "added" ? "新增:" : l.type === "removed" ? "移除:" : ""}</span>
+                  <span className="sr-only">
+                    {l.type === "added" ? "新增：" : l.type === "removed" ? "移除：" : ""}
+                  </span>
                   {l.content}
                 </span>
                 {l.note ? <span className="shrink-0 font-sans text-muted-foreground">{l.note}</span> : null}