fix(projects): report where a project actually is, not "Draft" forever

[catomean]

The bug

Every project card showed the same badge for its whole life. The badge rendered project.status, the column defaults to 'draft', and nothing in the app ever wrote it — six of the seven states in STATUS_LABELS were unreachable. The dashboard's only progress signal was a constant.

The step nav had its own, different answer: it marked Compose finished as soon as any figure had a styled image, which says nothing about whether the figures were ever placed. Two definitions of "where is this project", neither of them right.

The fix

Both now derive from the rows themselves — deriveProjectProgress() in lib/domain, one definition consumed by the badge and the nav, so they cannot disagree again.

A stored status is a second copy of facts the figures / surface / composition rows already hold, and the copy drifts the moment a step is undone. So it isn't written at all, and project.status is no longer displayed.

'export' is deliberately left underivable: nothing writes an exports row yet, and claiming the step was finished would be a guess.

Steps and their labels move to lib/config/project-steps.ts as one list (the nav keeps only its icons — the one genuinely UI-owned thing). This also removes a label map that lived in a component.

Notes

• The list query fetches the ids it derives from in the same round trip (figures(id), surfaces(id), compositions(id)) — no N+1.
• Embedding is unambiguous: projects has no surface_id/composition_id, so there is exactly one relationship each way.
• All three embedded tables carry owner-scoped for all RLS policies, so an authenticated caller sees only their own rows; guest callers use the service-role client already scoped by user_id on the parent.
• This only became derivable last commit — before fix(compose): keep the scene background instead of losing it on refresh #25 no compositions rows were ever written, so "composed" had no honest signal.

Verify

• lint: 0 errors, 8 warnings (all pre-existing)
• tsc: clean
• tests: 84 pass · 0 fail (was 78; 6 new cover the derivation, including the two old wrong answers)

🤖 Generated with Claude Code

https://claude.ai/code/session_014opKWKa65PXxn2MiWSKwwh