Prune retired Cloud pages and server functions #993

Parent

Spec: 1.0 tree cleanup and release contracts

What to build

Remove waitlist, Envoy-era certificate/ACME evidence, Organization logs/deployments pages, uncalled server functions, and marketing pages other than auth; serve a stub lander at /.

Acceptance criteria

• Auth and current Cloud navigation still work, and / serves the stub lander.
• Retired routes and their dead server paths are absent from routing and build output; existing active deployment/certificate features remain.

Blocked by

• Remove retired Cloud authoring and capability paths