slopus/happy cli-1.2.6-beta.0 on GitHub

Happy CLI v1.2.6-beta.0

Opus 5.5 in app-started sessions: the Claude Agent SDK floor is raised to ^0.3.283 (bundled Claude Code 2.1.283). Older bundled Claude Code (below 2.1.280) rejects Opus 5.5 with an API 400. (#1881)
Clearer error for an outdated bundled Claude Code: when Claude reports a model is too new for it, the session message now says to update Happy (npm i -g happy@latest); claude update does not replace the copy bundled with Happy. (#1881)
Session metadata parsing accepts the new optional systemKey and depth fields from newer Happy Agents (happy-wire).