stackchan-idf

Cut a tagged firmware release for stackchan-idf — push main, tag vX.Y.Z, push the tag, wait for CI, manually trigger Pages (since GITHUB_TOKEN-created releases don't chain-trigger workflows), confirm the live site is serving the new firmware. Use when the user says things like "新しいバージョンをリリース", "vX.Y.Z を出す", "タグを切ってビルド", or simply "release".