{
  "id": "brush_train",
  "name": "Brush 3DGS Train",
  "category": "scan",
  "description": "COLMAP dataset → 3D Gaussian Splat (.ply) via Brush, native Apple Silicon Metal trainer. Output opens in the splat viewer.",
  "accepts": ["colmap_dataset"],
  "produces": ["splat"],
  "resources": "gpu",
  "entry": "run.py",
  "params_schema": {
    "type": "object",
    "properties": {
      "total_steps": {"type": "integer", "default": 30000, "minimum": 500, "maximum": 100000, "description": "Training steps (30000 = full quality; lower = faster preview)"},
      "max_splats": {"type": "integer", "default": 10000000, "minimum": 100000, "maximum": 30000000, "description": "Upper bound on splat count"},
      "sh_degree": {"type": "integer", "enum": [0, 1, 2, 3], "default": 3, "description": "Spherical-harmonics degree (view-dependent color detail)"},
      "max_resolution": {"type": "integer", "default": 1920, "minimum": 512, "maximum": 4096, "description": "Max image resolution loaded"},
      "seed": {"type": "integer", "default": 42, "description": "Random seed"}
    }
  }
}