Add lib/api/routes/projects.js: list by space (with status filter),
create scoped to space, get/patch/delete by id. FK violation from
unknown space_id maps to 400 invalid_space.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add lib/api/routes/spaces.js: list, create, get-by-id, get-by-slug,
patch, delete. Mounted under /api/spaces. Server smoke restored.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Add lib/api/{errors,validate,pagination,index}.js: typed ApiError
subclasses, errorMiddleware, zod-backed validate(), parsePagination
with caps, and a mountApi() that owns /api routing + 404 + error tail.
server.js delegates /api to mountApi and drops the inline /api/spaces
smoke (returns in Task 2).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
