Two bugs prevented clean stereo-pair teardown:
1. removeGroup (CLI) only contacted the --host speaker (master). The
slave never received /removeGroup and stayed stuck in GroupSlave state
indefinitely, blocking direct playback. Fix: fetch the current group
first, then send /removeGroup to every member in parallel — mirrors
the same symmetry as createGroup (issue #252).
2. Speakers send DELETE /streaming/account/{id}/group/ (trailing slash,
no group ID) during teardown. Master and slave live in different
accounts, so each deletes its own copy independently. AfterTouch had
no route for this form → 405. Fix: add DeleteAllGroupsForAccount to
the datastore (scans Group_*.xml, idempotent if none found) and wire
DELETE /group and DELETE /group/ to a new HandleMargeDeleteAccountGroups
handler in both routing blocks.
Confirmed: after the fix both DELETE calls return 200 and the slave
exits GroupSlave state cleanly.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Tobias GesellchenandClaude Sonnet 4.6
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