Add a SLSA Generation step (YAML type: provenance) to an existing Harness pipeline to generate SLSA provenance and optionally attest with Cosign (keyless, key-based, or Vault). Supports container images (Docker, ECR, GCR, GAR, ACR, HAR) and Harness Local Stage artifacts. Place after image build/push; run sequentially after SBOM steps, not in parallel. Only works with existing pipelines. Use when asked to generate SLSA, add SLSA provenance, SLSA Generation step, attest SLSA, or configure SLSA Level 3 provenance in a pipeline. Trigger phrases: generate SLSA, SLSA generation, add SLSA step, SLSA provenance, attest SLSA, SlsaGeneration, provenance step, SLSA attestation, add provenance step.