fix: BUILD_VERSION from Cargo.toml, kiosk scaling, new apps, Rust warnings

Critical:
- BUILD_VERSION was hardcoded as "1.3.0-alpha" — now reads from Cargo.toml
  This caused ALL ISOs to show v1.3.0 regardless of actual binary version

Kiosk:
- Remove --disable-gpu flags (broke display scaling on some monitors)
- Add --start-fullscreen --window-size for reliable fullscreen

New apps:
- Nostr VPN, FIPS, Routstr, noStrudel, BotFights, NWNN, 484 Kitchen,
  Call the Operator, Arch Presentation, Syntropy Institute, T-0

Rust: suppress dead_code and unused_assignments warnings

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

neode-ui/public/assets/img/app-icons/routstr.svg

@@ -0,0 +1,4 @@
+<svg width="64" height="64" viewBox="0 0 64 64" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <rect width="64" height="64" rx="12" fill="#f59e0b"/>
+  <text x="32" y="38" text-anchor="middle" font-family="system-ui" font-size="18" font-weight="700" fill="white">R</text>
+</svg>