0.121.0 (2026-08-07) Full Changelog: v0.120.2...v0.121.0 Features api: add `mid-conversation-tool-changes-2026-07-01` beta (c7d1531) api: add support for session budgets, advisor tool, pinned inference location and skills auto-loading from GitHub (193bae0) Chores api: remove retired Claude Opus 4.1 models (5352a33) docs: small updates to descriptions (b8d4176) docs: updates to a few documentation strings (3a5dd69) ensure all dependencies have major version constraints (#274) (d52999b)