Clean up dead code and unused assets

- Remove trust-indicators JavaScript animations from animations-enhanced.js
- Clean up translation keys for removed indicator elements
- Remove selector references from config.js
- Fix missing video reference (hero-tech-pattern.mp4)
- Remove massive unused CSS sections: timeline, digital-beat, neural network viz
- Reduce animations.css from 2669 to 272 lines (90% size reduction)

This removes code that was referencing non-existent HTML elements
and large unused visual effects from previous design iterations.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

js/translations.js

@@ -22,9 +22,6 @@ const translations = {
         heroSubtitle: 'Spezialist für hochsichere, maßgeschneiderte IT-Lösungen für Behörden',
         
         // Trust Indicators
-        indicatorAvailability: 'Verfügbarkeit',
-        indicatorTrust: 'Behörden vertrauen uns',
-        indicatorSupport: 'Support',
         
         // Scroll Indicator
         scrollToExplore: 'Nach unten scrollen',
@@ -171,9 +168,6 @@ const translations = {
         heroSubtitle: 'Specialist for highly secure, customized IT solutions for government agencies',
         
         // Trust Indicators
-        indicatorAvailability: 'Availability',
-        indicatorTrust: 'Government agencies trust us',
-        indicatorSupport: 'Support',
         
         // Scroll Indicator
         scrollToExplore: 'Scroll to Explore',