arduino-skills v1.6.0

Release date: 2026-08-11

Highlights

• Adds four source-backed board profiles, bringing the indexed reference set to
  nine boards: Mega 2560 Rev3, Nano Every, Nano ESP32, and ESP32-C3-DevKitC-02.
• Makes embedded-project-loop the recommended first skill for physical,
  recovery, measurement, and multi-session work.
• Adds loop-engine-evidence-contract, an executable evaluation with complete
  and incomplete durable-loop fixtures.
• Keeps one shared skills/ source of truth across Agent Skills CLI, Codex,
  Claude Code, and Cursor adapters.
• Preserves the raw ordered constexpr int pin convention and C/C++
  embedded-first guidance.

Verification

• 28 active skills pass structural validation.
• 9 board profiles pass board-reference validation.
• 8/8 shared contract themes pass.
• 11/11 forward-contract eval cases pass after the loop-eval addition.
• Official Codex plugin validation, Python syntax, JSON parsing, and diff checks
  pass.

Evidence boundary

This release has repository and documentation evidence only. No board was
wired, flashed, uploaded to, measured, system-tested, or deployed in this
release loop. Model-level semantic triggering remains outside the deterministic
harness, and the prior fresh-context reviewer artifact remains unavailable.