Feature/onboarding slides (#4955)

# Description of Changes

- Added onboarding slides/upgrade banner conditions for all the
following cases
  - 'licensed'
  - 'no-login-user-under-limit-no-license'
  - 'no-login-admin-under-limit-no-license'
  - 'no-login-user-over-limit-no-license'
  - 'no-login-admin-over-limit-no-license'
  - 'login-user-under-limit-no-license'
  - 'login-admin-under-limit-no-license'
  - 'login-user-over-limit-no-license'
  - 'login-admin-over-limit-no-license';


---

## 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)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### 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: Anthony Stirling <[email protected]>
Co-authored-by: Connor Yoh <[email protected]>

frontend/src/core/services/updateService.ts

@@ -1,3 +1,5 @@
+import { DOWNLOAD_BASE_URL } from '@app/constants/downloads';
+
 export interface UpdateSummary {
   latest_version: string | null;
   latest_stable_version?: string | null;
@@ -71,11 +73,9 @@ export class UpdateService {
       return null;
     }
 
-    const baseUrl = 'https://files.stirlingpdf.com/';
-
     // Determine file based on machine type and security
     if (machineInfo.machineType === 'Server-jar') {
-      return baseUrl + (machineInfo.activeSecurity ? 'Stirling-PDF-with-login.jar' : 'Stirling-PDF.jar');
+      return DOWNLOAD_BASE_URL + (machineInfo.activeSecurity ? 'Stirling-PDF-with-login.jar' : 'Stirling-PDF.jar');
     }
 
     // Client installations
@@ -84,11 +84,11 @@ export class UpdateService {
       const type = machineInfo.activeSecurity ? '-server-security' : '-server';
 
       if (os === 'unix') {
-        return baseUrl + os + type + '.jar';
+        return DOWNLOAD_BASE_URL + os + type + '.jar';
       } else if (os === 'win') {
-        return baseUrl + os + '-installer.exe';
+        return DOWNLOAD_BASE_URL + os + '-installer.exe';
       } else if (os === 'mac') {
-        return baseUrl + os + '-installer.dmg';
+        return DOWNLOAD_BASE_URL + os + '-installer.dmg';
       }
     }