chore(repo): update workwork metadata

[pengx17]

Context

workwork 仓库已经从 Slack-only broker 演进为 Slack + China Feishu 双平台 broker，但 README、package metadata、默认服务名和部分 GitHub-facing client metadata 仍然停留在 slack-codex-broker。

这次把公开入口收敛到 workwork，同时把 README 从长篇 runbook 清理成项目主页：先说明 Workwork 是什么、核心流程、怎么启动和验证；平台差异只留在 setup / compatibility 的渐进式细节里。

协作过程

sequenceDiagram
    participant User as Peng
    participant Codex
    participant Repo as workwork repo
    participant GH as GitHub

    User->>Codex: 更新 README 和仓库基本信息
    Codex->>Repo: 扫描 README/package/config/admin metadata
    Codex->>Repo: 统一 workwork 命名与 GitHub URL
    Codex->>GH: 创建 PR #74 并更新 topics
    User->>Codex: README 太长，缺乏重点
    Codex->>Repo: 精简 README，保留 RFC/audit 必要承诺
    User->>Codex: 不需要着重讲平台差异
    Codex->>Repo: 移除首屏平台对照，改成统一 core flow
    Codex->>Repo: 跑 format/RFC/full test 验证

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方案讨论

• README 不再把 Slack/Feishu 差异放在首屏主结构里，改成 What It Does + Core Flow。
• Feishu 权限、证据、API compatibility 这类细节保留在 setup 和 <details> 中，避免首页过载，同时不破坏 RFC/audit 对用户可见承诺的检查。
• 没有重命名现有 real ops container 默认名 slack-codex-broker-real，因为它属于现有部署兼容项；README 中明确标成 legacy default。
• npm 发布包名仍保留 @agent-session-broker/admin / @agent-session-broker/worker，避免发布通道改名。

最终方案

• README 标题和开头定位改为 workwork，压缩为项目主页式结构，并用 details 渐进披露长尾 contract。
• root/admin/worker package metadata 指向 https://github.com/HOOLC/workwork。
• 默认 SERVICE_NAME、docker compose service、admin UI title/config、MCP OAuth client metadata、GitHub user-agent 改为 workwork。
• npm package deployment contract 测试同步锁住新 metadata。
• GitHub topics 已更新为 automation, broker, codex, feishu, slack。

验证情况

• pnpm format:check
• pnpm lint
• pnpm build
• pnpm test
• pnpm test test/rfc-0001-docs.test.ts test/rfc-0001-local-audit.test.ts test/rfc-0001-test-plan.test.ts
• pnpm test test/e2e-broker-part2.test.ts
• pnpm rfc:feishu-test-plan -- --json
• git diff --check

已知局限 / 后续工作

• GitHub repo description 仍是旧文案，建议改为：Slack + China Feishu broker that routes chat sessions into Codex app-server sessions with isolated workspaces.
• GitHub repo homepage 建议改为：https://github.com/HOOLC/workwork#readme
• 我当前 token 更新 GitHub About description/homepage 时 GitHub API 返回 404；topics 已更新成功，但 description/homepage 需要有 repo admin 权限的人补。

[pengx17]

Review notes:

• README Admin/API contract drift (blocking-ish docs issue): the new README still documents GET /admin/api/status?platform=slack|feishu, POST /admin/api/github-authors, and DELETE /admin/api/github-authors/:userId?platform=slack|feishu as platform-aware. The current routes ignore platform for /admin/api/status, and the GitHub author admin routes still accept only slack_user_id / call Slack-only admin service methods. Since this PR turns README into the public project homepage, I’d either remove those platform-aware claims or update the routes/tests to match. Related: test/rfc-0001-docs.test.ts currently locks some of these stale README strings, so the test should move with the doc correction.

Everything else I checked looks consistent with the rename/metadata goal: package metadata, default SERVICE_NAME, docker compose service, admin title/default, MCP client metadata, and GitHub User-Agent all line up with workwork; CI is green.