fix(render): turn nuke range circle red when launch would break alliance

Wire targetingAlly through GhostPreviewData.rangeWarning so RangeCirclePass
can color the blast-radius circle red instead of white when the ghosted nuke
would trigger a traitor penalty. Restores behavior lost in the canvas→WebGL
migration.

src/client/controllers/BuildPreviewController.ts

@@ -163,18 +163,13 @@ export class BuildPreviewController implements Controller {
       }
     }
 
-    // targetingAlly is computed above for state purposes; the renderer's
-    // ghost passes derive their own "warning" visual from canBuild/canUpgrade
-    // if needed. (Leave the variable here so its eslint-no-unused doesn't trip.)
-    void targetingAlly;
-
     this.game
       ?.myPlayer()
       ?.buildables(tileRef, [this.ghostUnit?.buildableUnit.type])
       .then((buildables) => {
         if (!this.ghostUnit) {
           this.pendingConfirm = null;
-          this.emitGhostPreview(tileRef);
+          this.emitGhostPreview(tileRef, targetingAlly);
           return;
         }
 
@@ -187,7 +182,7 @@ export class BuildPreviewController implements Controller {
             canUpgrade: false,
           });
           this.pendingConfirm = null;
-          this.emitGhostPreview(tileRef);
+          this.emitGhostPreview(tileRef, targetingAlly);
           return;
         }
 
@@ -201,7 +196,7 @@ export class BuildPreviewController implements Controller {
           }
         }
 
-        this.emitGhostPreview(tileRef);
+        this.emitGhostPreview(tileRef, targetingAlly);
       });
   }
 
@@ -211,8 +206,11 @@ export class BuildPreviewController implements Controller {
    * the ghost can't be placed. smoothLoop interpolates displayed position
    * toward the target tile each frame.
    */
-  private emitGhostPreview(tileRef: TileRef | undefined): void {
-    const data = this.buildGhostPreviewData(tileRef);
+  private emitGhostPreview(
+    tileRef: TileRef | undefined,
+    targetingAlly: boolean,
+  ): void {
+    const data = this.buildGhostPreviewData(tileRef, targetingAlly);
     if (data === null) {
       this.lastGhostData = null;
       this.view.updateGhostPreview(null);
@@ -302,6 +300,7 @@ export class BuildPreviewController implements Controller {
 
   private buildGhostPreviewData(
     tileRef: TileRef | undefined,
+    targetingAlly: boolean,
   ): GhostPreviewData | null {
     if (!this.ghostUnit) return null;
     if (tileRef === undefined) return null;
@@ -352,6 +351,7 @@ export class BuildPreviewController implements Controller {
       ownerID: myPlayer.smallID(),
       upgradeTargetTile,
       rangeRadius,
+      rangeWarning: targetingAlly,
     };
   }