chore: Wave 3 good-first issue backlog + README refresh

[cobusgreyling]

Summary

Wave 3 contributor backlog — 12 new scoped good first issues created on GitHub (#220–#231).

New issues (live on GitHub)

#	Title	Est.
220	Cursor CI Sweeper example	~45m
221	Cursor Post-Merge Cleanup example	~40m
222	Cursor Dependency Sweeper example	~45m
223	Cursor Changelog Drafter example	~40m
224	Cursor Issue Triage example	~40m
225	Hermes PR Babysitter example	~45m
227	loop-sync QUICKSTART subsection	~15m
228	Amazon Q appendix	~30m
229	Codeium appendix	~30m
230	Your loop-worktree week-two story	~15m
231	Your multi-loop failure story	~20m
226	loop-init validation checklist	~45m

Housekeeping

• Closed Share a Dependency Sweeper failure story #151, Share a Post-Merge Cleanup production story #163, Share a Changelog Drafter week-one story #198 (reference stories already in stories/)
• README Help wanted table refreshed; count → 25 open

Repo changes (this PR)

• scripts/create-good-first-issues.sh Wave 3 block (idempotent)
• 12 scripts/issue-bodies/*.md templates

[github-actions]

Loop Readiness Audit

Score: 100/100 (L3)

Strong loop readiness — good candidate for L3 with explicit gates.

No suggestions — looking good.

_{Posted by audit.yml · loop-audit docs}