v3.0.1

Rename toolbar key to logseq-ical-sync, use refresh icon (v3.0.1)

- Toolbar registerUIItem key changed from "open-calendar2" to
  "logseq-ical-sync" so the entry in Logseq's plugin menu matches the
  published plugin ID.
- Toolbar icon changed from ti-notebook to ti-refresh to emphasize the
  sync action over a calendar/notes metaphor.
- Bump package.json to 3.0.1.

v3.0.0

Fix CI: upgrade parcel to 2.12+ for Node 20 compatibility

lmdb 2.1.6 (shipped with parcel 2.2.1) has no prebuilt Node 20 binaries
and can't compile on it. Parcel 2.12+ ships lmdb with prebuilt binaries.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>