feat: ship ScratchNode public wiki loop

[HomenShum]

What changed

• Adds a published-only public ScratchNode wiki route at scratchnode.live/e/:slug/wiki.
• Adds events:getPublishedWikiBySlug({ slug }) so the public route can read the latest published wiki by slug or room code without exposing drafts/private notes.
• Wires post-publish room UI to surface/copy the public wiki URL from Share and Wiki sheets.
• Fixes answer Share buttons to copy real addressable answer URLs instead of only showing a toast.
• Leaves an agent coordination handoff with the new query/route contract.

Verification

• npx vitest run convex/__tests__/scratchnode.publicWikiRead.test.ts
• npx playwright test tests/e2e/scratchnode-live-route-honesty.spec.ts --project=chromium --workers=1
• npx tsc --noEmit --pretty false
• npm run build
• Local in-app browser smoke: http://127.0.0.1:5198/proto/home-v5.html loaded with no console errors.

Notes

This branch includes the coordination-audit commit from #484 and then closes the two highest-leverage gaps from that audit: public wiki payoff and honest answer sharing.

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Project	Deployment	Actions	Updated (UTC)
nodebench-ai	Ready	Preview, Comment	Jun 3, 2026 6:38am

[HomenShum]

Superseded by #490 on CI-compliant branch feat/scratchnode-public-wiki-loop.

[github-actions]

✅ Dogfood Visual QA Gate: PASSED

Check	Status
Screenshots	23 captured (pass)
Walkthrough	9 chapters (pass)
Key Frames	9 extracted (pass)
Scribe Steps	8 how-to steps (pass)
Build	success

Artifacts

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