[ankit]

The 4.0.5 Firefox zip was rejected by AMO ("File is too large to parse"). Webpack 4 never empties its output folder, so Monaco's TypeScript worker (about 7 MB) from an old build was still in firefox-dist/ and dist/ and got zipped, even though the copy rule now leaves it out.

• Production builds empty their output folder first
• package:firefox stops if any JS file is over AMO's 4 MB parse limit
• package:firefox and upload:chrome / upload:edge / upload:firefox refuse to run unless HEAD is the vX.Y.Z tag, so stores only get the merged release commit
• docs/releases.md and the release skill now say to check out the tag first

Review note: Safari's upload is left out, since TestFlight builds go up from commits that aren't tagged.

Testing: planted stale files and both production builds removed them; the size check flagged a 5 MB file and passed the real build; packaging and upload refused off the tag and passed on a tagged HEAD.

🤖 Generated with Claude Code

[github-actions]

Bundle size

No change to what the popup or content scripts load.

Bundle	Size	Change	Gzip	Change
Popup	182.0 KB	–	49.2 KB	–
fonts/fonts.css	2.9 KB	–	458 B	–
popup/index.css	23.9 KB	–	5.3 KB	–
popup/index.js	155.2 KB	–	43.5 KB	–
Content script (document_start)	90.0 KB	–	23.1 KB	–
editor/index.js	50.8 KB	–	11.9 KB	–
inject-css/index.js	36.1 KB	–	9.8 KB	–
site-bridge/index.js	3.1 KB	–	1.4 KB	–