Adds two read endpoints that replace the build-time VITE_APP_NAME with a
runtime-config surface: /api/deployment returns deployment name/tagline plus
the projects visible to the caller (gated filtered by membership, unlisted
omitted from enumeration per §22.5); /api/projects/:id returns one project's
config and optional theme overlay, gated behind the §22.5 read gate.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Ben Stull