Test builds: tool/dev_release.sh builds Linux here and publishes to a dev prerelease that dev builds update from

X.Y.Z-dev.N builds read the dev prerelease's manifest as well as the
stable one and take the newer, so a tester gets each test build through
the normal update and lands back on stable at the release.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitignore

@@ -17,6 +17,7 @@ coverage/
 # Build artifacts that should never be committed
 *.tar.gz
 *.zip
+/dist/
 app.*.symbols
 app.*.map.json