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>

image-recipe/build-auto-installer-iso.sh

@@ -66,7 +66,8 @@ fi
 echo "$BUILD_NUM" | sudo tee "$BUILD_COUNTER_FILE" > /dev/null 2>/dev/null || BUILD_NUM=1
 GIT_SHORT=$(cd "$SCRIPT_DIR/.." && git rev-parse --short HEAD 2>/dev/null || echo "dev")
 # Version format: major.minor.patch-prerelease (semver)
-BUILD_VERSION="1.3.0-alpha"
+# Read version from Cargo.toml (single source of truth)
+BUILD_VERSION=$(grep '^version' "$SCRIPT_DIR/../core/archipelago/Cargo.toml" 2>/dev/null | head -1 | sed 's/version = "//;s/"//' || echo "0.0.0")
 echo "Build #${BUILD_NUM} (${BUILD_VERSION}, commit ${GIT_SHORT})"
 
 # Architecture-dependent variables