# Completed Tasks

| ID | Status | Owner(s) | Depends on | Description | Exit Criteria |
|----|--------|----------|------------|-------------|---------------|
| SCANNER-DIFF-10-501 | DONE (2025-10-19) | Diff Guild | SCANNER-CORE-09-501 | Build component differ tracking add/remove/version changes with deterministic ordering. | Diff engine produces deterministic results across runs; unit tests cover add/remove/version scenarios. |
| SCANNER-DIFF-10-502 | DONE (2025-10-19) | Diff Guild | SCANNER-DIFF-10-501 | Attribute diffs to introducing/removing layers including provenance evidence. | Layer attribution stored on every change; tests validate provenance with synthetic layer stacks. |
| SCANNER-DIFF-10-503 | DONE (2025-10-19) | Diff Guild | SCANNER-DIFF-10-502 | Produce JSON diff output for inventory vs usage views aligned with API contract. | JSON serializer emits stable ordering; golden fixture captured; API contract documented. |