Feature/v2/selected pageeditor rework (#4756)

# Description of Changes

<!--
Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)
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---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

---------

Co-authored-by: James Brunton <[email protected]>
Co-authored-by: Copilot <[email protected]>

frontend/src/core/components/layout/Workbench.module.css

@@ -1,21 +1,21 @@
-.workbench-scrollable {
+.workbenchScrollable {
   overflow-y: auto !important;
   overflow-x: hidden !important;
 }
 
-.workbench-scrollable::-webkit-scrollbar {
+.workbenchScrollable::-webkit-scrollbar {
   width: 0.375rem;
 }
 
-.workbench-scrollable::-webkit-scrollbar-track {
+.workbenchScrollable::-webkit-scrollbar-track {
   background: transparent;
 }
 
-.workbench-scrollable::-webkit-scrollbar-thumb {
+.workbenchScrollable::-webkit-scrollbar-thumb {
   background-color: var(--mantine-color-gray-4);
   border-radius: 0.1875rem;
 }
 
-.workbench-scrollable::-webkit-scrollbar-thumb:hover {
+.workbenchScrollable::-webkit-scrollbar-thumb:hover {
   background-color: var(--mantine-color-gray-5);
 }

frontend/src/core/components/layout/Workbench.tsx

@@ -1,4 +1,3 @@
-import React from 'react';
 import { Box } from '@mantine/core';
 import { useRainbowThemeContext } from '@app/components/shared/RainbowThemeProvider';
 import { useToolWorkflow } from '@app/contexts/ToolWorkflowContext';
@@ -187,18 +186,16 @@ export default function Workbench() {
 
       {/* Main content area */}
       <Box
-        className={`flex-1 min-h-0 relative z-10 ${currentView === 'viewer' || !isBaseWorkbench(currentView) ? '' : styles.workbenchScrollable}`}
+        className={`flex-1 min-h-0 relative z-10 ${styles.workbenchScrollable}`}
         style={{
           transition: 'opacity 0.15s ease-in-out',
-          paddingTop: currentView === 'viewer' ? '0' : (activeFiles.length > 0 ? '3.5rem' : '0'),
-          overflow: currentView === 'viewer' || !isBaseWorkbench(currentView) ? 'hidden' : undefined,
         }}
       >
         {renderMainContent()}
       </Box>
 
       <Footer
-        analyticsEnabled={config?.enableAnalytics ?? undefined}
+        analyticsEnabled={config?.enableAnalytics === true}
         termsAndConditions={config?.termsAndConditions}
         privacyPolicy={config?.privacyPolicy}
         cookiePolicy={config?.cookiePolicy}