work/: triage against shipped main (#168, #155, #165, #132, #158)

[cboos]

Summary

work/ had accumulated a few plan docs whose contents have since landed. Triage per monk's #3198 mail-thread (federation-internal), executed for the three shipped-cleanly cases. The plugin-system RFC (work/tool-renderer-plugins.md) and still-unshipped plans stay untouched in this PR; they belong to a separate phase.

• DELETE work/async-agents.md — fully shipped in PR Support async agents (#90) #132 (294ed3b) with the cross-link follow-up in PR Cross-link TaskOutput / TaskUpdate headers back to their spawn (#154) #158 (1ab9f13). Content reflected in dev-docs/agents.md.
• SHRINK work/rendering-next.md — drop the §2 ✅ COMPLETED signature-unification subsection (ancient history) and §3 "Additional Tool Output Parsers" (GlobOutput / GrepOutput / WebSearchOutput / WebFetchOutput all live in models.py now). Keep the recursive-template / visitor-pattern / performance speculative sections. Renumbered survivors.
• SHRINK work/obsidian-friendly-output.md — the main implementation shipped in PR Obsidian-friendly output: --output dir + --expand-paths + --filter-path (#151) #155 (8de5b89); per-message Markdown timestamps in PR Per-message timestamps in Markdown output (#160) #165 (68e5bfb); --combined yes/no/only + --expand-paths bullet-list Markdown index also shipped. Drop all that. Retain the seven open follow-ups (cache-freshness destination-awareness, archived projects with --output, the absolute---filter-path-without---expand-paths silent-exclude footgun, --filter-path auto-implying --all-projects, --expand-paths for single-session, --dry-run mode, plus Obsidian frontmatter / wikilinks / peek-debug-logging / symlinks).

Net diff: 3 files changed, 29 insertions, 728 deletions.

Untouched (still unshipped or shipped-but-pending follow-up): work/refactor-reindex-with-ghosting.md, work/session-state-propagation.md, work/tool-renderer-plugins.md (the RFC will graduate to dev-docs/plugins.md only once PR #169 merges — phase 2).

Test plan

• No code changes; existing inbound links from dev-docs/{dag,messages}.md to rendering-next.md remain valid (the file still exists, just shrunk).
• just ci clean (format / test-all / ruff / pyright / ty).
• No links to async-agents.md or obsidian-friendly-output.md from anywhere else in the repo (verified via rg).

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Updated internal planning documents to reflect implementation progress and remaining follow-up items.
  • Removed completed planning documentation.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 3ebbf4ce-1f70-47bf-827e-80d153a862be

📥 Commits

Reviewing files that changed from the base of the PR and between f4b2ea9 and 66fdc6b.

📒 Files selected for processing (3)

• work/async-agents.md
• work/obsidian-friendly-output.md
• work/rendering-next.md

💤 Files with no reviewable changes (1)

• work/async-agents.md

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📝 Walkthrough

Walkthrough

This PR updates project planning documentation to reflect shipped implementations. The obsidian-friendly-output document transitions from feature planning to post-implementation follow-ups, recording PR deliveries and remaining tasks. Completed work is cleaned up from rendering-next, and async-agents planning is archived.

Changes

Documentation Cleanup and Follow-up Tracking

Layer / File(s)	Summary
Obsidian-friendly output: post-implementation follow-ups work/obsidian-friendly-output.md	Document revised from issue planning to post-implementation follow-ups. Header and top sections now record that the main Obsidian-friendly output feature shipped (PR #155) and Markdown timestamps shipped (PR #165). New "Open follow-ups" section documents remaining ergonomics and correctness gaps: cache freshness checks, archived project handling, absolute --filter-path without --expand-paths footgun (with proposed auto-imply --expand-paths remedy), and additional CLI feature ideas (--filter-path implies --all-projects, --expand-paths for single-session exports, --dry-run mode). Consolidated "other open items" list covers frontmatter, wikilinks, timestamp follow-up, debug logging, and symlink-based projection.
Cleanup: removing completed items work/async-agents.md, work/rendering-next.md	Async-agents planning document is archived (no new content observed). Rendering-next document removes the "✅ COMPLETED: Consistent (obj, message) Signatures" and "Additional Tool Output Parsers" sections; "Performance Optimization" heading is renumbered to section 3.

🐰 Through the planning docs I hop,
Crossed-off items make clean slate tops—
Obsidian output shipped with glee,
Follow-ups now clear as can be,
Async agents rest, their work's complete. 📋✨

🎯 1 (Trivial) | ⏱️ ~5 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main objective: triaging and cleaning up work/ planning documents by removing or shrinking files whose content has already shipped in the specified PRs.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch dev/work-cleanup

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