feat(sbom): CUST-WP-0013 — expand SBOM infra to terraform, ansible, and tool manifests

- Migration d6e7f8a9b0c1: add terraform, ansible, tool to Ecosystem enum
- ingest_sbom.py: new Ansible Galaxy requirements.yml parser (collections + roles)
- ingest_sbom.py: new sbom-tools.yaml manifest parser (agent-generated tool deps)
- ingest_sbom.py: promote .terraform.lock.hcl parser from ecosystem=other → terraform
- ingest_sbom.py: detect_all() runs all four parsers in one comprehensive scan
- capture_sbom_tools.py: agent-assisted tool manifest generator (claude -p)
- prompts/sbom-capture-agent.md: parameterised prompt for repo tool discovery
- Makefile: capture-tools target; ingest-sbom updated docs and DRY_RUN support
- 29 unit tests covering all new parsers and detect_all() behaviour
- canon/standards/sbom-convention_v0.1.md: updated with four-mechanism model and workflow

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/models/sbom_entry.py

@@ -15,6 +15,9 @@ class Ecosystem(str, enum.Enum):
     rust = "rust"
     go = "go"
     java = "java"
+    terraform = "terraform"
+    ansible = "ansible"
+    tool = "tool"
     other = "other"