Cross-module callers get an opaque ref plus rotating lease tokens so stale writers fail closed, and file I/O is refused inside a unit of work.
Co-authored-by: Cursor <cursoragent@cursor.com>
Unify auth middleware and remove X-User-ID trust, add project_members
authorization, sandbox workspaces via resolver, and admin-only reconcile
by run_id. Introduce goose migrations with startup schema gate, fail closed
when DB unavailable outside explicit ALLOW_IN_MEMORY, bundle web/dist in
app Dockerfile, and remove frontend pseudo-login fallback.
