fix(ci): use GITEA_USERNAME secret for git auth

.github/workflows/sync-to-gitea.yml

@@ -18,7 +18,7 @@ jobs:
 
       - name: Push to Gitea main
         env:
-          GITEA_USERNAME: Admin
+          GITEA_USERNAME: ${{ secrets.GITEA_USERNAME }}
           GITEA_TOKEN: ${{ secrets.GITEA_SECRET }}
           GITEA_HOST: ci.nxtgauge.com
           GITEA_OWNER: ${{ vars.GITEA_OWNER }}
@@ -34,11 +34,7 @@ jobs:
 
           REPO_NAME="${{ github.event.repository.name }}"
           BRANCH_NAME="${{ github.ref_name }}"
-          API_USER_JSON="$(curl -fsS -H "Authorization: token ${GITEA_TOKEN}" "https://${GITEA_HOST}/api/v1/user" || true)"
-          RESOLVED_GITEA_USER="$(printf '%s' "$API_USER_JSON" | jq -r '.login // empty')"
-          if [ -n "$RESOLVED_GITEA_USER" ]; then
-            echo "Resolved token user: $RESOLVED_GITEA_USER"
-          fi
+          RESOLVED_GITEA_USER=""
           CANDIDATE_OWNERS="${GITEA_OWNER:-} Admin ${{ github.repository_owner }}"
           TARGET_FULL_NAME=""
           TARGET_URL=""
@@ -69,7 +65,7 @@ jobs:
             exit 1
           fi
 
-          for auth_user in "$RESOLVED_GITEA_USER" "$GITEA_USERNAME" "oauth2"; do
+          for auth_user in "$GITEA_USERNAME" "oauth2"; do
             [ -n "$auth_user" ] || continue
             auth_url="https://${auth_user}:${GITEA_TOKEN}@${GITEA_HOST}/${TARGET_FULL_NAME}.git"
             if git ls-remote "$auth_url" >/dev/null 2>&1; then