feat(workflows): add Gitea workflow to sync GitHub release assets for Windows/macOS

.github/workflows/build-release.yml

@@ -1,4 +1,5 @@
-# Tagged releases from master: Windows + macOS builds.
+# Tagged releases: Windows + macOS builds (same idea as .gitea/workflows/build.yml — any tag
+# points at a commit; no requirement that the tag be on master).
 #
 # Pinned first-party actions (bump tag and SHA together when upgrading):
 #   actions/checkout@v6.0.1            8e8c483db84b4bee98b60c0593521ed34d9990e8
@@ -31,29 +32,8 @@ env:
     PNPM_VERSION: "10.32.1"
 
 jobs:
-    verify-master:
-        name: Verify tag on master
-        runs-on: ubuntu-latest
-        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
-        steps:
-            - name: Checkout
-              uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
-              with:
-                  fetch-depth: 0
-
-            - name: Ensure tagged commit is on master
-              run: |
-                  set -euo pipefail
-                  git fetch origin master
-                  if ! git merge-base --is-ancestor "${GITHUB_SHA}" origin/master; then
-                    echo "Tagged commit is not an ancestor of origin/master; release tags must be cut from master." >&2
-                    exit 1
-                  fi
-
     build-release:
         name: Build release (${{ matrix.label }})
-        needs: verify-master
-        if: always() && (needs.verify-master.result == 'success' || needs.verify-master.result == 'skipped')
         strategy:
             fail-fast: false
             matrix: