## What changed
Return `CatalogModel` from model lookups, keeping metadata together with its `Bundled`, `Provider`, `ExplicitConfig`, or `Synthetic` origin through config overrides and runtime snapshots. Replace `used_fallback_model_metadata` checks with explicit `Synthetic` origin checks.
Share the underlying `Arc<ModelInfo>` with extension stores and use copy-on-write for metadata changes. Keep origin tracking outside serialized model metadata.
## Testing
Extend coverage for origin retention across cache reloads, namespaced model lookups, catalog fallback, and config overrides. Verify that step snapshots and extension stores share the same model metadata allocation.
GitOrigin-RevId: bb6130c94a7a795aa168ee24664a1dd453579fba
## Why
A bundled reviewer entry does not establish that a custom gateway offers that model. Guardian should fall back to the parent model when the reviewer is neither advertised by the provider nor explicitly configured.
## What changed
Track model metadata origins as `Bundled`, `Provider`, or `ExplicitConfig`, including across catalog merges and cache reloads. Exclude bundled entries from Guardian reviewer selection unless `auto_review_model_override` is set. Continue selecting reviewers from provider and explicitly configured catalogs.
## Testing
Add coverage for gateway reviewer selection with each catalog origin, plus origin tracking across cache reloads, empty provider responses, and authentication changes.
GitOrigin-RevId: f8bf865d406e56ee0ade90087b55f2e33b98181e
## Why
An interrupt or turn replacement can invalidate a pending-work wakeup while its turn context is being constructed. Task startup could then recreate a turn whose reservation was no longer active.
## What changed
- Recheck that the wakeup still owns the active turn reservation immediately before calling `start_task`, and return if it does not.
- Allow the remote-control re-enrollment test up to 45 seconds for the connection following reconnect backoff.
## Testing
Add a regression test that pauses wakeup context construction, processes an interrupt, and then resumes construction. It verifies that no additional turn starts and only the initial model request is sent.
GitOrigin-RevId: c857fdd9f0fac3790d35a95a1f21a6d41977bb29
ioanbudea-OAI