fix share to users UI

public/src/components/map/ShareDialog.tsx

@@ -51,7 +51,7 @@ export function ShareDialog({ mapId, onClose }: ShareDialogProps) {
     setLoading(true);
     try {
       await mapShareService.shareWithUser(mapId, {
-        user_id: newUserId.trim(),
+        user_identifier: newUserId.trim(),
         permission: newUserPermission,
       });
       setNewUserId('');
@@ -59,7 +59,20 @@ export function ShareDialog({ mapId, onClose }: ShareDialogProps) {
       showToast('Map shared successfully!', 'success');
     } catch (error: any) {
       console.error('Share error:', error);
-      const message = error.response?.data?.detail || error.message || 'Failed to share map';
+      let message = 'Failed to share map';
+
+      if (error.response?.data?.detail) {
+        const detail = error.response.data.detail;
+        // Handle FastAPI validation errors (array of objects)
+        if (Array.isArray(detail)) {
+          message = detail.map((err: any) => err.msg).join(', ');
+        } else if (typeof detail === 'string') {
+          message = detail;
+        }
+      } else if (error.message) {
+        message = error.message;
+      }
+
       showToast(message, 'error');
     } finally {
       setLoading(false);

public/src/services/mapShareService.ts

@@ -23,7 +23,7 @@ export interface MapShareLink {
 }
 
 export interface CreateMapShare {
-  user_id: string;
+  user_identifier: string;
   permission: 'read' | 'edit';
 }