Fix Gitea wrapper login resolution (#538)

packages/mosaic/framework/tools/git/issue-create.sh

@@ -48,6 +48,7 @@ PY
 
     url="https://${host}/api/v1/repos/${repo}/issues"
     curl -fsS -X POST \
+      -H "User-Agent: curl/8" \
       -H "Authorization: token ${token}" \
       -H "Content-Type: application/json" \
       -d "$payload" \
@@ -121,7 +122,12 @@ case "$PLATFORM" in
     gitea)
         if command -v tea >/dev/null 2>&1; then
             REPO_SLUG=$(get_repo_slug)
-            REPO_ARGS=(--repo "$REPO_SLUG" --login "${GITEA_LOGIN:-mosaicstack}")
+            GITEA_LOGIN_NAME=$(get_gitea_login) || {
+                echo "Warning: could not resolve Gitea login for tea; trying Gitea API fallback..." >&2
+                gitea_issue_create_api
+                exit $?
+            }
+            REPO_ARGS=(--repo "$REPO_SLUG" --login "$GITEA_LOGIN_NAME")
             CMD=(tea issue create "${REPO_ARGS[@]}" --title "$TITLE")
             [[ -n "$BODY" ]] && CMD+=(--description "$BODY")
             [[ -n "$LABELS" ]] && CMD+=(--labels "$LABELS")