The GitHub channel gave nothing but chaos (failed runs on tag push,
auth issues with gh CLI on this side). Forgejo is the source of
truth (cf. USER.md 'Remote setup' for the yavsc mirror setup), so
move the .deb release workflow there.
- Remove .github/workflows/build-and-release-deb.yml.
- Add .forgejo/workflows/release.yml, mirroring the structure of
yavsc/.forgejo/workflows/release.yml (single job, no Node, bash
+ jq + curl). amd64 and arm64 .deb built sequentially (matrix
is impossible because actions/upload-artifact needs Node, which
the runner image pazof/yavsc-build-env doesn't ship — same
constraint as documented in MEMORY.md).
- Reuse existing release on tag collision (PATCH instead of POST)
to keep the /releases/tag/<tag> permalink stable — re-tag = le
mal, but a re-build of the same tag should not duplicate releases.
