style(copy): fix remaining punctuation violations and make check:copy strict

Auto-fix of 602 string literals across 74 files (half-width punctuation next to
Chinese, parenthesised Chinese, quotes); biome reflow; e2/e6 assertions follow
the new full-width summaries. check:copy now runs with --strict in ci.

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

apps/server/src/modules/agent/fake-scripts.ts

@@ -79,7 +79,7 @@ export const DEMO_SCRIPTS: FakeScript[] = [
     finalText: (results) => {
       const r = results.find((x) => x.capabilityId === "inventory.query");
       const n = (r?.json as { items?: unknown[] } | undefined)?.items?.length ?? 0;
-      return `[fake] 演示模式:库存查询返回 ${n} 个作品。演示模型不提交下载;要真实执行,在设置里配置 Agent 上游。`;
+      return `[fake] 演示模式：库存查询返回 ${n} 个作品。演示模型不提交下载；要真实执行，在设置里配置 Agent 上游。`;
     },
   },
 ];