[firewalker06]

Summary

• preserve and recover session_id / session_bootstrapped across restart, migration, stale saves, and validated restores
• detect missing native identity, archived-key resurrection, and large record-count regressions
• create atomic checksum-verified daily backups with configurable retention and failure-safe rotation
• add tycho agent store backups and tycho agent store restore plus an operational recovery procedure
• add focused persistence, migration, regression, rotation, failure, and restore coverage

Fizzy: https://fizzy.startkit.tech/1/public/boards/JL9SBKBA7kAWp4a7fsFFFpXk/cards/239

Verification

• bundle exec ruby test/agent_store_recovery_test.rb
• bundle exec ruby test/managed_agent_test.rb
• bundle exec ruby test/app_agent_persistence_test.rb
• bundle exec ruby test/cli_command_test.rb
• bin/test