The Dashboard had one address. The API served the page only at `/`, both
reference proxies forwarded only `/`, and the open module lived in React
state, so a refresh went back to the first module, nothing could be
bookmarked, and Back left the Dashboard (DESIGN.md §2.7).
ADR 0057 makes the address bar the source of truth:
- `/` is a host-owned Overview, now the landing page; `/modules/<id>`
mounts that module. An id the server's navigation does not list shows
"This page isn't available" and loads nothing; any other Dashboard
address is a host-owned "Page not found".
- `/modules`, `/settings`, and `/account` are reserved whole, from one
list (`@ekklesia/shell/dashboard-routes`) that the shell's router and
the API's page routes both read. The API serves the same frozen page,
ETag, and security headers anywhere inside them; look-alikes and other
methods stay the sanitized 404.
- A small host-owned history replaces the selected-module state, built in
the entry point so it stays the only file touching `window`. Navigation
items are real links; modified clicks are left to the browser. Focus
moves to the page after an in-place change, and the tab is named after
the page.
- Sign-in still happens in place with no return value (ADR 0034), so a
deep link opens its own page after sign-in.
- Both reference Caddyfiles forward the new paths; the deploy smoke now
reloads a module's address through the real proxy and requires it to
mount again.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
