6.17.1 [design] Build-in-public entry point + explainer + status badge + reframed access

Estimate: 60m · Type: design

Design the "build in public" experience. Update/extend the design/public-projects/ three-file asset set (notes + *.mock.html + .png) — the design gate for the UI subtasks below.

Design:

• Reframed access: the public level presented as "Building in public" in the make-public control (Settings access) + copy.
• Discoverable entry point: a prominent "Start building in public" CTA for non-public projects — decide placement (candidates: a project-settings General card, and/or a dismissible nudge in the project shell/header). It is NOT a bare dropdown option.
• Explainer / confirm step: a short panel — what building in public means + what becomes visible (board, roadmap, work items public + crawlable; sign-in only to submit/upvote/comment) + a confirm. Plus the reverse ("stop building in public") confirm.
• Status indicator: a "Building in public" badge/pill on the project (header and/or settings) when access = public.

Acceptance criteria

• design-notes.md + *.mock.html + .png updated/committed (three-file rule); copy index incl. the CTA, explainer, badge, and reframed level label.
• Real components/ui/* primitives + --el-*/shape tokens (no Tier-0), AA-safe; full-page Playwright render (light, 2x, ~1200px).

Context refs

• design/public-projects/ (Panel 6 access); components/ui/* (Button, Pill, Dialog/Modal, Card)