v0.3.7

Added

• RPM plugin: snapshots are now created before every RPM transaction regardless of frontend (dnf, PackageKit/Discover, bare rpm). Previously only dnf5 transactions triggered snapshots via the libdnf5 actions plugin.

Fixed

• snapshot no longer prints contradictory "already exists" and "created" messages on the same call. The function returns a typed result and the caller handles messaging.
• snapshot is now a safe no-op on non-btrfs systems instead of failing and blocking package transactions.