Merge origin/main into the right rail tabs

Main removed the compact Radio player and its Context header launcher
(66e19f0c) and the Operator HUD layout (8b2c6993). The right rail follows:

- The tool slot under the tabs (#right-rail-tools) and its launcher styles
  are gone; the strip's column holds only the tablist.
- Main's Radio placement, bindings and markup tests are taken as they are;
  the Details button reveal and the launcher state sync go with the player.
- The Radio reveal after Enable keeps the branch's scrollend landing, folded
  back into main's single method.
- A radio pick still reopens a closed Context in every theme (the early
  owner reveal in panelChrome), so main's non-Cyber block is dropped.
- The one-owner rail tests run over Tactical, Minimal and Cyber.
- CURRENT-STATE and the changelog fragment no longer mention the compact
  launcher or the slot.

scripts/format-scope.json

@@ -212,7 +212,6 @@
   "src/styles/thermal.js",
   "src/styles/anime.js",
   "src/styles/noir.js",
-  "src/styles/snow.js",
   "scripts/qa-visual-effects.mjs",
   "scripts/qa-draw-tool.mjs",
   "scripts/qa-geo-import.mjs",
@@ -562,6 +561,7 @@
   "src/data/cctvCataloniaSource.test.mjs",
   "src/data/cctvHk.test.mjs",
   "src/data/cctvVegvesen.test.mjs",
+  "src/data/cctvA22.test.mjs",
   "src/data/cctvNyc.test.mjs",
   "src/data/cctvNswSource.test.mjs",
   "src/data/cctvTxdotSource.test.mjs",
@@ -703,7 +703,6 @@
   "src/ui/shareRestoration.js",
   "src/ui/visualSettings.js",
   "src/ui/panelChrome.js",
-  "src/ui/panelChrome.radioOwnership.test.mjs",
   "src/testSupport/readShellSource.mjs",
   "src/ui/stateOwners.test.mjs",
   "src/layers/flights/records.js",