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-label-readability.mjs

@@ -245,7 +245,7 @@ async function main() {
     ...(executablePath ? { executablePath } : {}),
     args: [
       '--no-sandbox', '--disable-setuid-sandbox',
-      '--use-gl=angle', '--use-angle=swiftshader',
+      '--use-gl=angle', `--use-angle=${process.env.QA_ANGLE || 'swiftshader'}`,
       '--disable-dev-shm-usage', '--disable-web-security',
       '--disable-background-timer-throttling', '--disable-renderer-backgrounding',
       '--window-size=1280,800',