Strip whitespace from AR field names and labels to prevent image lookup issues

- Add .strip() to field name and label inputs in AR field management
- Implement defensive stripping at model layer for extra safety
- Prevents spacing issues that cause image serving routes to fail

src/app/blueprints/admin/routes.py

@@ -321,8 +321,8 @@ def manage_ar_fields(tenant_id):
 
         if action == 'add':
             field_data = {
-                'fieldName': request.form.get('fieldName'),
+                'fieldName': request.form.get('fieldName', '').strip(),
-                'label': request.form.get('label'),
+                'label': request.form.get('label', '').strip(),
                 'fieldType': request.form.get('fieldType'),
                 'editable': request.form.get('editable', 'true'),
                 'displayOrder': int(request.form.get('displayOrder', 0))
@@ -343,8 +343,8 @@ def manage_ar_fields(tenant_id):
         elif action == 'update':
             field_data = {
                 'id': int(request.form.get('field_id')),
-                'fieldName': request.form.get('fieldName'),
+                'fieldName': request.form.get('fieldName', '').strip(),
-                'label': request.form.get('label'),
+                'label': request.form.get('label', '').strip(),
                 'fieldType': request.form.get('fieldType'),
                 'editable': request.form.get('editable', 'true'),
                 'displayOrder': int(request.form.get('displayOrder', 0))

src/app/models/ar_field.py

@@ -36,6 +36,10 @@ class ARFieldModel:
         """Save or update a custom AR field"""
         tenant_id = tenant_id.lower()
 
+        # Strip whitespace from field name and label to prevent spacing issues
+        field_name = field_data['fieldName'].strip() if field_data.get('fieldName') else ''
+        label = field_data['label'].strip() if field_data.get('label') else ''
+
         with get_db() as conn:
             cursor = conn.cursor()
 
@@ -47,8 +51,8 @@ class ARFieldModel:
                         display_order = ?, updated_at = CURRENT_TIMESTAMP
                     WHERE id = ? AND tenant_id = ?
                 ''', (
-                    field_data['fieldName'],
+                    field_name,
-                    field_data['label'],
+                    label,
                     field_data['fieldType'],
                     field_data['editable'],
                     field_data['displayOrder'],
@@ -63,8 +67,8 @@ class ARFieldModel:
                     VALUES (?, ?, ?, ?, ?, ?)
                 ''', (
                     tenant_id,
-                    field_data['fieldName'],
+                    field_name,
-                    field_data['label'],
+                    label,
                     field_data['fieldType'],
                     field_data['editable'],
                     field_data['displayOrder']