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/contexts/AppConfigContext.tsx

@@ -1,5 +1,6 @@
 import React, { createContext, useContext, useState, useEffect, ReactNode, useCallback } from 'react';
 import apiClient from '@app/services/apiClient';
+import { getSimulatedAppConfig } from '@app/testing/serverExperienceSimulations';
 
 /**
  * Sleep utility for delays
@@ -44,6 +45,8 @@ export interface AppConfig {
   activeSecurity?: boolean;
   dependenciesReady?: boolean;
   error?: string;
+  isNewServer?: boolean;
+  isNewUser?: boolean;
 }
 
 export type AppConfigBootstrapMode = 'blocking' | 'non-blocking';
@@ -106,6 +109,15 @@ export const AppConfigProvider: React.FC<AppConfigProviderProps> = ({
 
     for (let attempt = 0; attempt <= maxRetries; attempt++) {
       try {
+        const testConfig = getSimulatedAppConfig();
+        if (testConfig) {
+          setConfig(testConfig);
+          setFetchCount((prev) => prev + 1);
+          setHasResolvedConfig(true);
+          setLoading(false);
+          return;
+        }
+
         if (attempt > 0) {
           const delay = initialDelay * Math.pow(2, attempt - 1);
           console.log(`[AppConfig] Retry attempt ${attempt}/${maxRetries} after ${delay}ms delay...`);