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v0.5.20 — Skills, rewind, and a stronger agent harness

Highlights

  • Nine production-grade game-building skills (movement, combat, UI, and more)
  • Rewind an individual assistant message when you want to back up one step
  • Run-and-verify loop with heartbeats and raised timeouts for multi-step engine work
  • Opus 4.7 on the free tier plus an expanded model lineup

Changes

Added
  • Skill library wired into orchestrator prompts for repeatable multi-step workflows
  • Per-message Rewind with confirmation modal
  • previewScene and SummerGit checkpoint tools in the harness
  • Plan files and updateTodos verify-gate for structured agent tasks
  • summer/skills knowledge pattern for composing tools across a turn
  • Template import via download + tar extract; enableGodotPlugin helper for fresh projects
Improved
  • runAndVerify: three-attempt retry loop with progress heartbeats
  • 3D generation capabilities and in-chat documentation
  • Chat model entitlements and routing for new providers
  • Turn caps on tool calls and wall-clock time to keep long runs bounded
Fixed
  • Reject Pending Changes renamed from Undo All, with a confirm dialog
  • Bridge timeout diagnostics downgraded to warnings where appropriate