Open views naming the retired Snow style on Normal

createView threw on style 'snow', so an embed host or a
show_in_gods_eye_view call holding a view from before Snow was retired
was refused outright, camera and layers included. viewFromParams read
style=snow as the recipient's own style, while the app opened the same
link on Normal.

Both now read a retired style as Normal; truly unknown names still
throw. The retired list moves to a browser-free module shared by the
view API, the share codec and visual settings.

scripts/package-boundaries.json

@@ -813,7 +813,8 @@
       "src/ui/layerNames.js",
       "src/ui/statusText.js",
       "src/ui/statusBadge.js",
-      "src/scopeMaskPolicy.js"
+      "src/scopeMaskPolicy.js",
+      "src/visualStylePolicy.js"
     ],
     "external": ["cesium"]
   },
@@ -2627,7 +2628,8 @@
       "src/voice/geminiCaptureWorklet.js",
       "src/ui/statusBadge.js",
       "src/sceneCommandRelease.js",
-      "src/scopeMaskPolicy.js"
+      "src/scopeMaskPolicy.js",
+      "src/visualStylePolicy.js"
     ],
     "external": [
       "hls.js",
@@ -3364,7 +3366,8 @@
       "src/i18n/locales/zh-CN.json",
       "src/i18n/locales/zh-Hant.json",
       "src/scopeMaskPolicy.js",
-      "src/ui/displayControls.js"
+      "src/ui/displayControls.js",
+      "src/visualStylePolicy.js"
     ],
     "external": ["cesium"]
   },
@@ -3941,7 +3944,8 @@
       "src/data/idSwitches.js",
       "src/data/detectionPolicy.js",
       "src/scopeMaskPolicy.js",
-      "src/i18n/marker.js"
+      "src/i18n/marker.js",
+      "src/visualStylePolicy.js"
     ],
     "external": []
   },
@@ -4045,7 +4049,8 @@
       "src/tools/views.js",
       "src/tools/globePanel.js",
       "src/tools/queries/panelRequest.js",
-      "src/geoDistance.js"
+      "src/geoDistance.js",
+      "src/visualStylePolicy.js"
     ],
     "external": ["satellite.js"]
   },
@@ -4146,7 +4151,8 @@
       "src/view/index.js",
       "src/data/idSwitches.js",
       "src/data/layerState.js",
-      "src/data/layerStateTokenReservations.json"
+      "src/data/layerStateTokenReservations.json",
+      "src/visualStylePolicy.js"
     ],
     "external": []
   },