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-floor-verify.mjs

@@ -37,7 +37,7 @@ const chrome = [
 
 const browser = await puppeteer.launch({
   headless: 'new', executablePath: chrome,
-  args: ['--use-gl=angle', '--use-angle=swiftshader', '--enable-webgl', '--ignore-gpu-blocklist', '--no-sandbox'],
+  args: ['--use-gl=angle', `--use-angle=${process.env.QA_ANGLE || 'swiftshader'}`, '--enable-webgl', '--ignore-gpu-blocklist', '--no-sandbox'],
 });
 const page = await browser.newPage();
 await page.setViewport({ width: 1400, height: 900 });