Replaces hardcoded 3-resolution/3-framerate arrays with ALL_RESOLUTIONS
and STANDARD_FRAMERATES from shared constants (540p–Native, 30–120 fps).
Adds amber warning banner when high-end options (≥1440p or ≥75 fps) are
enabled, and fixes toggleResolution to handle 'native' with correct sort.
Move instance-level administration out of Space Settings into its own
modal. Adds admin UI for instance name, registration toggle, and
discovery toggle. Streaming limits panel relocated from SpaceSettings.
- Add InstanceAdminSettings type and GET/PATCH /api/settings/instance
- Add registration_open DB column (nullable, env var fallback)
- Auth registration and instance info now check DB override
- New InstanceSettings modal with General and Streaming tabs
- Admin shield button in UserAreaPanel (visible to admins only)
- Remove Streaming tab from SpaceSettings