docs(contributor): refresh task board around current bottlenecks

[huangruiteng]

What

Rewrite CONTRIBUTOR_TASKS.md around the project's development direction instead of an operational backlog:

• New Project Development Direction section with six directions: management surface, Effect Program runtime maturity, verified state transitions, operator observability, contributor/operator experience, and maintainability.
• New contributor slices: GH-C83 (M7.1 parity fixtures), GH-C84 (read-only interpret_turn_journal replay lens), GH-C85 (validation_command caller), GH-C86 (dashboard cost projection), GH-C87 (onboarding regression fixture), GH-C88 (budget-aware CLI ergonomics), GH-C89 (AGE-style attractor design).
• Retire/refresh stale rows (global risks is now the next command; observable handle slice waits for feat(control-plane): implement generic observable_artifact_handle_v0 … #3080 merge; task leases now back Turn fencing).
• Kept all docs-governance and benchmark-workflow smoke invariants intact.

Validation

• python3 examples/docs-governance-smoke.py: passed
• python3 examples/benchmark-developer-workflow-doc-smoke.py: passed
• loopx check --scan-path CONTRIBUTOR_TASKS.md: public boundary clean
• git diff --check: clean
• loopx canary premerge --from-git-diff --goal-id loopx-meta: all selected checks passed, 0 run/direct failures (receipt recorded after PR creation)

[huangruiteng]

Premerge validation summary

Changed surface: CONTRIBUTOR_TASKS.md only (docs / contributor metadata).

Checks run:

• python3 examples/docs-governance-smoke.py: passed (required board invariants present, stale rows removed)
• python3 examples/benchmark-developer-workflow-doc-smoke.py: passed (benchmark seam phrasing + public-safety scan)
• loopx check --scan-path CONTRIBUTOR_TASKS.md: public boundary clean
• git diff --check: clean
• loopx canary premerge --from-git-diff --goal-id loopx-meta: 8/8 checks passed, 0 run/direct failures
• LoopX change-quality receipt recorded: cqr_3ad4938f5ff1f70e417b (decision pass)

Failures/skips: none. Manual holds: none. Coverage rationale: the two docs smokes encode the repository's hard invariants for this board (required current-state strings, stale-row exclusions, benchmark seam phrasing, public-safety snippets); canary docs/public-boundary checks confirm the diff is safe and single-purpose.

[huangruiteng]

PR #3099 exact-head 评审（head ab401d30e468cf8cd73ef179d6e66649d777a67b）

详细中文评审

动机

CONTRIBUTOR_TASKS.md 此前以“Current Bottlenecks”（当前瓶颈清单）组织，内容贴近维护者近期调度（合并队列、#3074、#3082、#3085、#3092、release 文档时间线等），对贡献者来说更像一份过期的运维待办，而不是可据此选活的方向性指引。本 PR 把它重写为围绕产品发展方向的贡献者任务板：六个方向、新增 7 个 contributor slice、退役过期行。

改动思路

• 用 Project Development Direction（六方向：管理面、Effect Program runtime 成熟度、verified state transitions、operator observability、contributor/operator experience、maintainability）替换旧的瓶颈列表；每个方向都指向现有协议/问题号（#3082/#3074/#3085/#3092/#2881），并要求“不做第二套 ledger/抽象”。
• 新增 GH-C83（M7.1 parity fixtures）、GH-C84（read-only interpret_turn_journal replay lens）、GH-C85（validation_command caller）、GH-C86（dashboard cost projection）、GH-C87（onboarding regression fixture）、GH-C88（budget-aware CLI ergonomics）、GH-C89（AGE-style attractor design），并给每个任务写了 scope 边界与验证命令。
• 退役过期行：移除 GH-C91（批量合并队列——属于 maintainer/自动化职责，不该是 contributor 任务）；把 global risks 改为“next command”，observable handle slice 标注等 #3080 合并后启用，task leases 与 Turn fencing 对齐现状。

具体改动

• CONTRIBUTOR_TASKS.md（+74/-28）：方向段重写 + Priority Queue 行增删；Starter/Focused 表新增条目均带明确 in/out-of-scope 与验证命令；保留 docs-governance 与 benchmark-workflow smoke 所需的结构不变量。

对主干的风险

docs-only、单文件、无代码/CI/首屏变化。内容与当前产品方向一致（Effect Program、typed settlement、verified completion 都是活跃控制面路线），新任务都有真实后续（#3074/#3082 等）而非空想脚手架。公开/私有边界扫描 clean，无内部路径或凭据。风险低。

我的整体评价

这是一次高质量的贡献者入口重构：把“维护者近期待办”换成“产品方向 + 可认领切片”，每个新 GH-C 都有明确 scope、验证与归属，过期任务也干净退役。与仓库 scope-fit 与 right-sized 原则一致。无阻塞项，结论 APPROVE（作者即 owner，GitHub 禁止形式化 self-approve，按仓库约定以 COMMENTED 记录同一结论）。

验证

• exact head ab401d30e468cf8cd73ef179d6e66649d777a67b（评审时 head 未变）：
  • python3 examples/docs-governance-smoke.py：通过
  • python3 examples/benchmark-developer-workflow-doc-smoke.py：通过
  • loopx check --scan-path CONTRIBUTOR_TASKS.md：public boundary clean
  • CI：dependency-review SUCCESS

---

Approval conclusion (author-owned PR; GitHub blocks formal self-approval)

Head: ab401d30e468cf8cd73ef179d6e66649d777a67b

Verdict: APPROVE — docs-only rewrite of CONTRIBUTOR_TASKS.md from a bottleneck backlog to a development-direction task board: six directions, seven new scoped contributor slices (GH-C83..GH-C89), and clean retirement of stale rows including GH-C91. No code, CI, or first-screen changes; governance and benchmark-workflow smokes plus the public-boundary scan pass at the exact head.

Key finding: No blockers. The board stays aligned with active control-plane routes (Effect Program, typed settlement, verified completion) and each new slice names its scope, validation, and ownership.

Validation: docs-governance smoke, benchmark-developer-workflow-doc-smoke, and loopx check --scan-path CONTRIBUTOR_TASKS.md all pass; dependency-review green.