The removal of the Buddy/Companion feature is a clean removal with no migration needed — the feature was experimental and self-contained. Any companion state stored in your configuration will simply be ignored.

The new /dream command is gated behind a feature flag (tengu_kairos_dream) and may not be available to all users immediately. The existing background auto-dream mechanism continues to work independently.

The claude-sonnet-4-6 model was already present in v2.1.96; this release adds no new model families but refines model capability detection (the max_effort resolver now properly handles version-based capability checks for Opus/Sonnet >= 4.6).