settingsPage Init selfhost (#4734)

# Description of Changes

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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]>

frontend/src/core/pages/HomePage.tsx

@@ -150,10 +150,11 @@ export default function HomePage() {
   const baseUrl = useBaseUrl();
 
   // Update document meta when tool changes
+  const appName = config?.appNameNavbar || 'Stirling PDF';
   useDocumentMeta({
-    title: selectedTool ? `${selectedTool.name} - Stirling PDF` : 'Stirling PDF',
+    title: selectedTool ? `${selectedTool.name} - ${appName}` : appName,
     description: selectedTool?.description || t('app.description', 'The Free Adobe Acrobat alternative (10M+ Downloads)'),
-    ogTitle: selectedTool ? `${selectedTool.name} - Stirling PDF` : 'Stirling PDF',
+    ogTitle: selectedTool ? `${selectedTool.name} - ${appName}` : appName,
     ogDescription: selectedTool?.description || t('app.description', 'The Free Adobe Acrobat alternative (10M+ Downloads)'),
     ogImage: selectedToolKey ? `${baseUrl}/og_images/${selectedToolKey}.png` : `${baseUrl}/og_images/home.png`,
     ogUrl: selectedTool ? `${baseUrl}${window.location.pathname}` : baseUrl