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gsxdsm 74a0bdb25c FN-9032: harden knowledge-graph artifact validation

Reject malformed or contradictory graph cache artifacts and rebuild them as a complete set.

- Require exact persisted record shapes and valid import references before cache reuse
- Detect invalid import ownership and duplicate extractor identities during consistency checks
- Cover cache recovery cases and document the all-or-nothing artifact policy
- Add a patch changeset for the published CLI package

Files changed:
 .../fn-9032-knowledge-graph-artifact-validation.md |  7 +++++
 docs/knowledge-graph.md                            |  2 +-
 .../graph-artifact-not-gitignored.test.ts          | 13 ++++++---
 .../__tests__/graph-builder-incremental.test.ts    | 29 +++++++++++++++++++-
 .../__tests__/graph-serialization.test.ts          | 31 +++++++++++++++++++++
 .../__tests__/graph-store-recovery.test.ts         | 14 ++++++++++
 .../src/knowledge-graph/graph-serialization.ts     | 32 ++++++++++++++--------
 packages/core/src/knowledge-graph/graph-store.ts   | 18 ++++++++++++
 8 files changed, 129 insertions(+), 17 deletions(-)

Fusion-Task-Id: FN-9032

Fusion-Task-Lineage: d53934f6-2735-42ab-a41e-4421890277be

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>

2026-08-13 15:30:53 -07:00