ci: add changelog extraction to promote-rc job in auto-release [skip ci]

.mokogitea/workflows/auto-release.yml

@@ -109,6 +109,37 @@ jobs:
             --path . --stability rc --bump minor --branch rc \
             --token "${{ secrets.MOKOGITEA_TOKEN }}"
 
+      - name: Update RC release notes from CHANGELOG.md
+        run: |
+          API_BASE="${GITEA_URL}/api/v1/repos/${GITEA_ORG}/${GITEA_REPO}"
+
+          if [ -f "CHANGELOG.md" ]; then
+            NOTES=$(awk '/^## \[Unreleased\]/{found=1; next} /^## \[/{if(found) exit} found{print}' CHANGELOG.md)
+            [ -z "$NOTES" ] && NOTES="Release candidate"
+          else
+            NOTES="Release candidate"
+          fi
+
+          RELEASE_ID=$(curl -sf -H "Authorization: token ${{ secrets.MOKOGITEA_TOKEN }}" \
+            "${API_BASE}/releases/tags/release-candidate" | python3 -c "import json,sys; print(json.load(sys.stdin).get('id',''))" 2>/dev/null || true)
+
+          if [ -n "$RELEASE_ID" ]; then
+            python3 -c "
+          import json, urllib.request
+          body = open('/dev/stdin').read()
+          payload = json.dumps({'body': body}).encode()
+          req = urllib.request.Request(
+              '${API_BASE}/releases/${RELEASE_ID}',
+              data=payload, method='PATCH',
+              headers={
+                  'Authorization': 'token ${{ secrets.MOKOGITEA_TOKEN }}',
+                  'Content-Type': 'application/json'
+              })
+          urllib.request.urlopen(req)
+          " <<< "$NOTES"
+            echo "RC release notes updated from CHANGELOG.md"
+          fi
+
       - name: Summary
         if: always()
         run: |