When AUTH_ENABLED=false, seed an "anonymous" user row in the users
table so API keys, pipelines, and user files don't fail with FK
constraint violations. Previously, the synthetic anonymous user only
existed in memory (attached by the middleware), but any DB operation
referencing userId "anonymous" would violate foreign key constraints.
Also adds 25 new tests covering:
- Integration: ensureAnonymousUser, FK constraints, settings save,
API key and pipeline operations for anonymous mode
- Frontend: useAuth hook anonymous happy path (role, permissions,
hasPermission, session endpoint bypass)
- Frontend: settings dialog nav filtering (authRequired hides
security/people/teams/roles when auth disabled)
- Backend: session endpoint returns admin role when auth disabled
When AUTH_ENABLED=false, the anonymous user was assigned the "user" role
which lacks settings:write permission, making all settings saves return
403. Since no admin exists when auth is disabled, settings were
permanently read-only. Promote the anonymous user to "admin" so the
single user has full control of the instance.
Also adds DEFAULT_TOOL_VIEW env var (sidebar|fullscreen) following the
existing DEFAULT_THEME pattern, seeded via ensureDefaultSettings() on
first boot.
Closes#135
SnapOtter