The provision-timeout sweeper was emitting a new WORKSPACE_PROVISION_TIMEOUT
event type, but the canvas event handler (canvas-events.ts:234) only
has a case for WORKSPACE_PROVISION_FAILED — the sweep's event fell
through silently. DB was being marked 'failed' but the UI stayed on
'starting' indefinitely until the user hard-refreshed.
Reusing the existing event name keeps the UI reaction uniform across
both fail paths (runtime-crash via bootstrap-watcher and boot-timeout
via sweeper). Operators who need to distinguish can read the `source`
payload field — "bootstrap_watcher" vs "provision_timeout_sweep".
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
ec52d155f4