generate-sparkle-appcast

Use this skill when the user wants to publish a new Mos release (stable or beta) and needs:

• Sparkle appcast.xml generated from the notarized .zip in build/
• Two hosted release notes pages (Chinese + English)
• Sparkle to show Chinese for all zh* locales (Simplified/Traditional/HK/TW), and English for everything else

Inputs

• --since <commit>: the previous release commit (exclusive). Used to generate release notes from changes since that commit.
  • If not provided, reads from .last-release-commit file automatically.
• A notarized+zipped app in build/ named:
  • Mos.Versions.<version>-<YYYYMMDD>.<num>.zip (stable)
  • Mos.Versions.<version>-beta-<YYYYMMDD>.<num>.zip (beta)
• Sparkle Ed25519 private key at sparkle_private_key.txt (gitignored).
• .last-release-commit: stores the previous release commit hash (auto-read if --since not provided).
• Optional env:
  • RELEASE_NOTES_BASE_URL (default https://mos.caldis.me/release-notes)
  • RELEASE_NOTES_ZH_FILE / RELEASE_NOTES_EN_FILE to point to pre-written HTML files (otherwise the script writes to build/release-notes/<tag>.*.html)