feat(navara): render CCTV media and calibration handles

Port camera markers, coverage, media planes, volumes and calibration to the
Navara renderer. Preserve shared source/media policy and add exact plane
picking, owned resource cleanup and idle hold handling.

Validate paired keyless dev/preview media and physical drags, native legacy,
engine contracts and full CPU/build gates. Record remaining shell, viewshed
browser and W2 performance gates; defer Dioxus and plan the transit port.

scripts/package-boundaries.json

@@ -2705,6 +2705,10 @@
       "src/layers/radio/render/cesium.js",
       "src/layers/firms/render/navara.js",
       "src/layers/radio/render/navara.js",
+      "src/layers/cctv/render/navara.js",
+      "src/layers/cctv/render/navaraMeshes.js",
+      "src/layers/cctv/render/navaraGizmo.js",
+      "src/layers/cctv/render/navaraLine.js",
       "src/layers/alpr/render/navara.js",
       "src/layers/alpr/render/navaraOverlay.js",
       "src/layers/radio/screenClusters.js",