宜博 / lemonboss

按 docs/README.md 既有约定（done/ 放「已实现/当前有效」），把两份已落地的
阶段设计文档移入 done/system-design/：

- 27-p1-virtual-reference.md  P1 虚拟引用寻址，commit 226489d
- 27-p2-org-graph.md          P2 Org Graph，70a4727 + f20d0d8，真实建公司端到端验证过

用 git mv 保留历史（R098 / R087）。移动断掉的 33 处相对链接已全部修复：
moved 文件内的出向链接改 ../../todo/system-design/，todo/ 下 6 个文件的入向链接
改 ../../done/system-design/。全 docs/ 扫描无断链。

README 此前严重过时——只列了 2 份 27 文档，实际已有 11 份。本次补全 todo/ 表格，
每份标注状态与作用（总纲 / 需求源头 / 命名规范 / 端到端 / 参考场景 /
P3+P4 已实现 / 验收契约 / P4 设计中），并在 done/ 表格补上 P1、P2 两行。

■ 刻意没有移动 27-p3-p4-work-graph-console.md
它虽然已实现（c3abf4a），但文档正被另一进程持续修改（工作区 M 状态）。
移动会打断它的编辑路径，等它收尾后再归档。

■ 三份文件的链接修复留在工作区未提交
27-naming-conventions.md / 27-p3-p4-work-graph-console.md / 27-requirement.md
里，我的链接修复与另一进程的在途编辑混在同一文件中，单独拆分风险大于收益。
工作区内容是正确的（链接已指向新路径），会随它下次提交一并带上。

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

- New docs/README.md indexes the tree: done/ (shipped features + reference manuals),
  todo/ (current focus — Graph Agent architecture), todo/future/ (deprioritized
  roadmaps: FDE pipeline todo list, stale v1.1 milestones, harness engineering
  proposal — orthogonal to the Graph Agent work, not blocking it)
- Move completed/reference docs into docs/done/ (LEMONBOSS-SYSTEM-DESIGN, architecture-v5,
  claude-code-cron, open-api-manual, qa_judge_req, task_timeline_design, user-guides/,
  system-design/01-26 minus the three moved to todo/future/) — verified against actual
  code (qa-judge template, Task Timeline route/service/view) before filing as done
- Fix the two TOC links in LEMONBOSS-SYSTEM-DESIGN.md that would otherwise point at the
  old paths after the move
- docs/todo/system-design/27-graph-agent-architecture.md: add the P2 Org Graph doc link
  in the roadmap table and 关联文档 section
- Add docs/todo/system-design/27-p2-org-graph.md (P2 requirements & design, drafted in
  parallel while P0/P1 landed)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>