## What changed
- Save writable `/experimental` selections through `config/batchWrite`, including features that are not known to the local client.
- Refresh configured values after writes and surface timeouts, failures, and higher-priority overrides without changing the active task's settings.
- Serialize saves and discovery, let accepted writes finish after the popup closes, and retain uncertain selections for explicit retry.
## Testing
- Cover new server feature keys, server defaults, overrides, write and readback failures, timeouts, selected config profiles, and popup retry behavior.
GitOrigin-RevId: acee4e10cbb8c2fce9211e8fadd3cd67fa0eb1a5
## What changed
- Load the `/experimental` catalog from the running server for the active thread, with loading, empty, and failure states in the popup.
- Show beta features in server order and preserve server-reported names, descriptions, and configured values. Mark features as read-only when the local config writer cannot safely update them.
- Persist only changed, writable feature flags. Bound discovery with page-size and page-count limits, repeated-cursor detection, deduplication, cancellation, and a timeout.
## Testing
- Cover paginated discovery, malformed or unresponsive servers, popup cancellation, read-only controls, selective writes, and the new popup states.
GitOrigin-RevId: 1f49eb961c8ab220a466e15f032c1dc61ed86d38
Eric Traut