Skill: Add a New Dagster Asset

Steps

1. Choose the layer file: asset_bronze.py, asset_silver.py, or asset_gold.py.

2. Declare the asset:

   python
   1@asset(group_name="<layer>", deps=["<upstream_asset>"])
   2def <asset_name>(context: AssetExecutionContext) -> None:
   3    """One-line description."""
   4    settings = PipelineSettings()
   5    # ... logic
   6    context.add_output_metadata({"key": "value"})

3. File naming: follow <type>_<function>.py for any new utility files.

4. Resources (e.g. DbtCliResource): declare in function signature, already registered in definitions.py.

5. Register: load_assets_from_modules in definitions.py picks up the asset automatically if it's in the right module.

6. Validate:

   bash
   1uv run dotenv -f .env run -- uv run dagster asset list
   2uv run dotenv -f .env run -- uv run dagster asset materialize --select <asset_name>