Brainstormed design for the backend half of §22 slice M3, split at the
backend/frontend seam. Covers migration 027 (type/initial_state columns,
the 12-table PK rebuilds, default→slug re-stamp), the app/registry.py
mirror over REGISTRY_REPO, GET /api/deployment + /api/projects/:id, and
the initial_state/unreviewed review semantics. Routing, runtime branding,
directory, and switcher are deferred to a later M3-frontend spec.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Ben Stull
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