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CAST v2.1.0

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@github-actions github-actions released this 02 Aug 17:44
· 19 commits to main since this release
v2.1.0
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Learn about vigilant mode.

Claude Opus 5 becomes the preferred executing model for the roster.

Added

  • Claude Opus 5 is the preferred executing model. docs/MODEL_OPTIMIZATION.md adds claude-opus-5 to the ladder as Preferred (Opus 4.8 → Supported), a full Opus 5 behavior profile (self-verifies unprompted — delete verification scaffolding; expands task scope — minimal-change discipline and Files lists are load-bearing; delegates readily — the reverse of 4.7/4.8; longer responses that effort settings don't shorten; same coverage-first review-recall rule), an "Opus 5 additional requirements" block (separate rate-limit bucket from the Opus 4.x pool, thinking on by default with disabled only at effort ≤ high, stop_reason: "refusal" handling, 512-token prompt-cache minimum, fast mode on the Claude API only at its own pricing), and Opus 4.8 → Opus 5 / 4.x → 5 upgrade checklists plus a 5 → 4.8 downgrade note.

Changed

  • The three pipeline skills' Model Compatibility sections gain an Opus 5 orchestration note (spawn only named agents, hold tasks to their Files lists, no extra verification passes), and /agent-code's review-recall rule now names all supported models.
  • README prerequisites, agents/README.md, skills/README.md, docs index, roster/validation references, docs/FIRST_RUN.md, and the example fixture's author-model lines now name claude-opus-5 as the preferred executing model.
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