feat(hud): Cyber HUD theme with GPU contact sonar (#706)

Add the opt-in Cyber HUD layout with coordinated map and cockpit panel
styling, GPU-only contact sonar (rings, range, power, opacity, sector) with
native-rendering fallback, and set_cyber_sonar voice controls. Sonar visual
style inspired by kk376's tactical naval sonar (#214).

Co-authored-by: Sameh Khamis <[email protected]>
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

src/voice/actionSchemas.js

@@ -1,3 +1,5 @@
+import { HUD_LAYOUTS } from '../hudLayoutPolicy.js';
+
 // Canonical action arguments. Descriptive wording is supplied separately.
 const schemas = [
   {
@@ -313,11 +315,26 @@ const schemas = [
         },
         layout: {
           type: 'string',
-          enum: ['tactical', 'operator', 'minimal'],
+          enum: [...HUD_LAYOUTS],
         },
       },
     },
   },
+  {
+    name: 'set_cyber_sonar',
+    parameters: {
+      type: 'object',
+      additionalProperties: false,
+      properties: {
+        enabled: { type: 'boolean' },
+        rings: { type: 'integer', minimum: 3, maximum: 12 },
+        rangePct: { type: 'integer', minimum: 60, maximum: 120 },
+        intensityPct: { type: 'integer', minimum: 0, maximum: 100 },
+        opacityPct: { type: 'integer', minimum: 35, maximum: 100 },
+        sectorDeg: { type: 'integer', minimum: 8, maximum: 60 },
+      },
+    },
+  },
   {
     name: 'set_detection',
     parameters: {