Remove debug test cube from Renderer3D

[Copilot]

Debug test cube geometry was left in production code, adding unnecessary objects to the scene and degrading performance on iOS (primary platform).

Changes:

• Removed testCube property from Renderer3D constructor
• Removed test cube creation in init() method (geometry, material, scene addition)
• Removed test cube camera-follow logic from render() method

Before:

// DEBUG: Add test cube at origin to verify rendering
const testGeometry = new THREE.BoxGeometry(50, 50, 50);
const testMaterial = new THREE.MeshBasicMaterial({ color: 0x00ff00, wireframe: false });
this.testCube = new THREE.Mesh(testGeometry, testMaterial);
this.layers.gameplay.add(this.testCube);

After:

// Clean initialization - no debug objects
this.initialized = true;

23 lines removed from production renderer.

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Project	Deployment	Actions	Updated (UTC)
shooter-app	Ready	Preview, Comment	Feb 11, 2026 9:43am