Self-hosted auto-update. The add-on now updates itself -- Thunderbird polls updates.tomaszkasperczyk.name, downloads new releases in the background, and applies them on the next restart. No AMO/ATN; unsigned works because Thunderbird ships xpinstall.signatures.required=false. gecko.id is unchanged, so existing installs aren't orphaned.
One-time manual install: builds before v0.7.3 have no update_url and can't find the feed, so v0.7.3 is the last one you install by hand. Grab thunderbird-mcp-v0.7.3.xpi below (or dist/thunderbird-mcp.xpi from a fresh pull) and install via Tools > Add-ons > Install from File. From v0.7.4 on it's automatic.
- Updates apply on restart (experiment API, not a live swap)
- A profile hardened with
xpinstall.signatures.required=trueblocks both manual and auto installs - Verified end-to-end: installed
v0.7.2, auto-updated tov0.7.3on Thunderbird 152 (unsigned,signedState0, applied on restart)