New toggle in live map controls: 'Matrix' - animates packet hex bytes
flowing along paths in green Matrix-style rain effect.
- Hex bytes from actual packet raw_hex data flow along each hop
- Green (#00ff41) monospace characters with neon glow/text-shadow
- Trail of 8 characters with progressive fade
- Dim green trail line underneath
- Falls back to random hex if no raw data available
- Persists toggle state to localStorage
- Works alongside existing Realistic mode