Fix splash effects on all buttons in organization settings dialog

- Add splashColor: Colors.transparent and highlightColor: Colors.transparent to all IconButtons
- Add ButtonStyle with NoSplash.splashFactory and transparent overlayColor to all TextButtons
- Updated close button, remove member button, cancel invitation button, and accept/reject buttons
- Maintains consistent button behavior across the entire app

b0esche_cloud/lib/pages/home_page.dart

@@ -493,9 +493,14 @@ class _HomePageState extends State<HomePage> with TickerProviderStateMixin {
                             if (!isLoggedIn) {
                               return const SizedBox.shrink();
                             }
-                            return BlocBuilder<OrganizationBloc, OrganizationState>(
+                            return BlocBuilder<
+                              OrganizationBloc,
+                              OrganizationState
+                            >(
                               builder: (context, orgState) {
-                                final hasSelectedOrg = orgState is OrganizationLoaded && orgState.selectedOrg != null;
+                                final hasSelectedOrg =
+                                    orgState is OrganizationLoaded &&
+                                    orgState.selectedOrg != null;
                                 return Row(
                                   mainAxisSize: MainAxisSize.min,
                                   children: [

b0esche_cloud/lib/widgets/organization_settings_dialog.dart

@@ -25,7 +25,8 @@ class OrganizationSettingsDialog extends StatefulWidget {
       _OrganizationSettingsDialogState();
 }
 
-class _OrganizationSettingsDialogState extends State<OrganizationSettingsDialog> {
+class _OrganizationSettingsDialogState
+    extends State<OrganizationSettingsDialog> {
   int _selectedTabIndex = 0;
   List<Member> _members = [];
   List<Invitation> _invitations = [];
@@ -213,6 +214,8 @@ class _OrganizationSettingsDialogState extends State<OrganizationSettingsDialog>
                 IconButton(
                   onPressed: () => Navigator.of(context).pop(),
                   icon: Icon(Icons.close, color: AppTheme.secondaryText),
+                  splashColor: Colors.transparent,
+                  highlightColor: Colors.transparent,
                 ),
               ],
             ),
@@ -291,16 +294,11 @@ class _OrganizationSettingsDialogState extends State<OrganizationSettingsDialog>
           child: AnimatedDefaultTextStyle(
             duration: const Duration(milliseconds: 200),
             style: TextStyle(
-              color: isSelected
+              color: isSelected ? AppTheme.accentColor : AppTheme.secondaryText,
-                  ? AppTheme.accentColor
-                  : AppTheme.secondaryText,
               fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
               fontSize: 14,
             ),
-            child: Text(
+            child: Text(text, textAlign: TextAlign.center),
-              text,
-              textAlign: TextAlign.center,
-            ),
           ),
         ),
       ),
@@ -362,6 +360,8 @@ class _OrganizationSettingsDialogState extends State<OrganizationSettingsDialog>
                           color: AppTheme.errorColor,
                         ),
                         onPressed: () => _removeMember(member.userId),
+                        splashColor: Colors.transparent,
+                        highlightColor: Colors.transparent,
                       ),
                   ],
                 )
@@ -404,6 +404,8 @@ class _OrganizationSettingsDialogState extends State<OrganizationSettingsDialog>
                   trailing: IconButton(
                     icon: Icon(Icons.cancel, color: AppTheme.errorColor),
                     onPressed: () => _cancelInvitation(inv.id),
+                    splashColor: Colors.transparent,
+                    highlightColor: Colors.transparent,
                   ),
                 );
               },
@@ -514,10 +516,28 @@ class _OrganizationSettingsDialogState extends State<OrganizationSettingsDialog>
                   mainAxisSize: MainAxisSize.min,
                   children: [
                     TextButton(
+                      style: ButtonStyle(
+                        splashFactory: NoSplash.splashFactory,
+                        overlayColor: WidgetStateProperty.resolveWith<Color?>((Set<WidgetState> states) {
+                          if (states.contains(WidgetState.pressed)) {
+                            return Colors.transparent;
+                          }
+                          return null;
+                        }),
+                      ),
                       onPressed: () => _acceptJoinRequest(req.id, 'member'),
                       child: const Text('Accept'),
                     ),
                     TextButton(
+                      style: ButtonStyle(
+                        splashFactory: NoSplash.splashFactory,
+                        overlayColor: WidgetStateProperty.resolveWith<Color?>((Set<WidgetState> states) {
+                          if (states.contains(WidgetState.pressed)) {
+                            return Colors.transparent;
+                          }
+                          return null;
+                        }),
+                      ),
                       onPressed: () => _rejectJoinRequest(req.id),
                       child: Text(
                         'Reject',