ci: use gitea-release-action@v1 for release upload

Replaces the manual curl-based release creation with the standard action,
consistent with other Gitea repos. Also bumps checkout to @v4.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -9,7 +9,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install system dependencies
         run: |
@@ -41,26 +41,13 @@ jobs:
           cp builddir/ahfail-display dist/
           tar czf ahfail-linux-x86_64.tar.gz -C dist .
 
-      - name: Create Gitea release and upload asset
+      - name: Upload release asset
         # Requires a GITEA_TOKEN secret with write:repository scope.
         # Create it in repo Settings → Secrets.
-        env:
-          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
-          GITEA_URL: https://gitea.weircon.dk
-          REPO: agw/gtk-ahfail
-          TAG: ${{ github.ref_name }}
-        run: |
-          set -euo pipefail
-          RELEASE_ID=$(curl -f -X POST \
-            "${GITEA_URL}/api/v1/repos/${REPO}/releases" \
-            -H "Authorization: token ${GITEA_TOKEN}" \
-            -H "Content-Type: application/json" \
-            -d "{\"tag_name\":\"${TAG}\",\"name\":\"${TAG}\",\"draft\":false}" \
-            | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")
-
-          [ -n "${RELEASE_ID}" ] || { echo "ERROR: empty RELEASE_ID from API"; exit 1; }
-
-          curl -f -X POST \
-            "${GITEA_URL}/api/v1/repos/${REPO}/releases/${RELEASE_ID}/assets" \
-            -H "Authorization: token ${GITEA_TOKEN}" \
-            -F "attachment=@ahfail-linux-x86_64.tar.gz"
+        uses: https://gitea.com/actions/gitea-release-action@v1
+        with:
+          token: ${{ secrets.GITEA_TOKEN }}
+          server_url: ${{ github.server_url }}
+          tag_name: ${{ github.ref_name }}
+          name: ${{ github.ref_name }}
+          files: ahfail-linux-x86_64.tar.gz