Enhance audio and visual elements in the UI for improved user experience

- Added a new script in package.json to generate welcome speech audio for enhanced onboarding.
- Updated SplashScreen.vue and OnboardingWrapper.vue to use the new intro background image and poster.
- Modified Dashboard.vue and Login.vue to reflect changes in background images for consistency.
- Removed outdated background images and updated references to ensure a cohesive visual theme.
- Improved tap-to-start feature with new text and logo in SplashScreen.vue for better engagement.
- Enhanced audio playback functionality in useLoginSounds.ts to include welcome speech.

neode-ui/tailwind.config.js

@@ -9,6 +9,7 @@ export default {
       fontFamily: {
         sans: ['Avenir Next', 'system-ui', 'sans-serif'],
         mono: ['Courier New', 'monospace'],
+        archipelago: ['Montserrat', 'sans-serif'],
       },
       backdropBlur: {
         'glass': '18px',