Complete phase 3 W1 acceptance and close T16 findings

Fix Navara model display tint, overlay ordering, follow gestures and resource cleanup.
Reduce repeated aircraft work and correct fixture enrichment responses.
Strengthen dev/preview QA, preserve failure history and document verified W1 results.

Validation: 7171 ordinary tests pass, one Windows-only skip; 15 allocation probes;
37 W1 acceptance steps; contracts, shell, four performance gates; 18 identical
Cesium baseline PNGs. Known pre-existing CCTV and live-source limits are recorded.

scripts/qa-voice-routing.mjs

@@ -1305,7 +1305,8 @@ async function runBehaviorLayer() {
     args: [
       '--no-sandbox',
       '--disable-setuid-sandbox',
-      ...(HEADFUL ? [] : ['--use-gl=angle', '--use-angle=swiftshader']),
+      ...(HEADFUL ? [] : ['--use-gl=angle', `--use-angle=${process.env.QA_ANGLE || 'swiftshader'}`]),
+      '--mute-audio',
       '--disable-dev-shm-usage',
       '--disable-web-security',
       '--disable-background-timer-throttling',