Closes the physical↔digital loop the labels opened: the QR on a printed
envelope (tane://seed, already encoded by seed_label_codec) can now be
scanned from the inventory bar. A known label opens its variety; an
unknown one asks before adding anything, then creates the variety (species
linked by exact scientific name when bundled) with a lot carrying the
label's year and origin. Scanner is pure ZXing (zxing_barcode_scanner,
MIT) — no ML Kit, no Play Services, F-Droid-safe, the stack Ğ1nkgo ships.
Mobile-only; other platforms don't show the button (OCR precedent).
The post-scan flow is a plain function (handleScannedPayload) so it's
widget-tested without a camera.
The cirruslabs/flutter job image has no Node.js, so JS-based actions fail with
'exec: node: not found'. Check out with plain git over the internal forgejo:3000
URL + job token, keeping the workflows Node-free.
git.comunes.org runs Forgejo Actions, not GitLab CI, so the tag-triggered
signed-AAB build + fastlane Play upload now lives in .forgejo/workflows/release.yml
(single job, no cross-job artifact passing). Removed the equivalent GitLab jobs;
.gitlab-ci.yml keeps only the analyze/test gate. Play service account is reused
from Ğ1nkgo. docs/release.md updated (Forgejo secrets).
