## Why
`/import` was unavailable in remote sessions and when connected to the local app-server daemon. Shared servers also broadcast import completions from other clients, which must not clear this client's pending import or report its completion.
## What changed
- Allow external setup migration through the connected app server in both session types.
- Detect setup using the active thread's working directory, or the remote working-directory override before a thread starts. Use home-only detection when no remote directory is available.
- Track the returned `import_id` and only clear the pending import and report completion for a matching notification.
- Skip refreshing configuration from local disk after import completion in remote workspaces.
## Testing
Add shared-transport coverage in embedded and remote modes for detection with and without a working directory, retrying failed imports, rejecting overlapping imports, and matching interleaved completion notifications queued before the import response.
GitOrigin-RevId: 864ed9fe87e5c554da79907ed80a01f0c9948392
Eric Traut
7e6c4c20fd