Cross-checked every doc against the code and fixed the stragglers the
apply/gateway/subdomain refactors left behind:
- Retired `tls: internal` mode: dropped the misleading reference in
registry.md and the stale comment in config.py GatewayConfig (only
off|acme exist; the dns-and-tls.md "was removed" note is kept as
accurate history).
- Subdomain-only routing: fixed "path-based routing" claims in design.md
(proxy list + mesh), "path prefix or host" → host, and the "path-prefix
routes stay on :port" line in registry.md.
- Frontends serve at their subdomain root (VITE_BASE=/), not /<name>/:
fixed supabase.md (x2), the scaffold.py docstring, the stacks.py build
comment, and design.md's "serve prefix baked in" line.
README, AGENTS, developing-castle, dns-and-tls audited clean. Verified
against code; core 129 / cli 31 pass; ruff clean.
Paul Payne
0e8bf2571f