feat: rollback.yml — automated rollback to timestamped backup - #24
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Default: restore the most recent timestamped backup (sorted by mtime). Override: -e backup_timestamp=<DDMMYYYY_HHMMSS> to roll back to a specific one. Restores: - openspecimen.war (required — fails if backup is missing it) - plugins/default/*.jar, plugins/paid/*.jar, plugins/zustomer/*.jar - lib/mysql-connector-*.jar (when present in backup) - openspecimen_release_marker (when present in backup) Out of scope (documented): - Database schema (no Liquibase rollback) - openspecimen.properties (config rollback — re-run site.yml instead) Reuses the operator-friendly error format: - Fails fast and lists all available backups if requested timestamp missing - Fails fast with no-backups-found guidance if backup_dir is empty - Fails fast if backup is incomplete (no WAR) docs/DEPLOY-UPGRADE.md - Rollback section rewritten — playbook usage replaces manual ssh+cp procedure - Restoration table documents what is and isn't restored - --check dry run documented
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Default behaviour: restores the most recent timestamped backup. Override with -e backup_timestamp=<DDMMYYYY_HHMMSS> for a specific one. Restores WAR + all three plugin tiers + MySQL connector + .release marker; out-of-scope (db schema, openspecimen.properties) documented. Fails fast with operator guidance if no backup exists or the requested timestamp is missing. Closes #30.