Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
CompactionArea: what it touches
Internal ChangesKind: in v2.1.304,
Internal ChangesSection of the release
What
Compaction is when Claude Code shortens earlier conversation to free up room. When Claude Code reads a saved session transcript, it now records where the most recent compaction point sits in the file.
Why
This is internal groundwork for resuming sessions. Nothing visible changes.