9e15c3b96c
- New 'rename-user' template (templates / template rename-user <old> <new>): best-effort uid rename across core tables (oc_users, oc_preferences, oc_group_user, oc_group_admin, oc_ldap_user_mapping, oc_share, oc_mounts, oc_storages). Explicitly NOT a supported Nextcloud operation - the generated script carries an in-line warning (as leading SQL comments) that app-specific tables (Talk, Calendar, Contacts, Mail, 2FA/WebAuthn...) are not covered and that the data directory must be renamed on disk manually, followed by occ files:scan --all. Documented the same caveat in both READMEs. - Hardened the round-2 transaction wrapping: beginTransaction()/commit()/ rollBack() are now wrapped in try/catch. PostgreSQL (our backend) has fully transactional DDL so this wasn't actually broken here, but Nextcloud also supports MySQL/MariaDB via the same IDBConnection, where DDL implicitly commits - on that backend a DDL statement in the batch would make a later commit()/rollBack() throw 'no active transaction' and previously that exception was unhandled (HTTP 500 instead of a clean JSON response). Now: if rollBack() itself fails after an error, we report rollbackFailed+warning instead of falsely claiming rolledBack, since earlier statements in that batch may already be permanently applied. If commit() fails with nothing to commit (already auto-committed), that's logged only, since the effects are already durably persisted.