Add depth-classified earthquakes on Navara

Match native ground footprints, encoded alpha and source ordering on real terrain and photoreal tiles while excluding forward meshes. Cache static screen data and reduce large-disc edge work without changing GPU pixels.

Add deterministic lifecycle, source/share, foreground/horizon and three-context performance proof; restore credits for available Navara feeds and retain failure history in migration evidence.

scripts/package-boundaries.json

@@ -2695,7 +2695,10 @@
       "src/celestialRing/render/cesium.js",
       "src/celestialRing/view.js",
       "src/layers/satellites/render/cesium.js",
-      "src/layers/earthquakes/render/cesium.js"
+      "src/layers/earthquakes/render/cesium.js",
+      "src/layers/earthquakes/render/navara.js",
+      "src/layers/earthquakes/render/navaraGeometry.js",
+      "src/layers/earthquakes/render/navaraGrid.js"
     ],
     "external": [
       "hls.js",