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4f853603c3
Iter 31. Lifts ADR-118 invariant I3 + ADR-120 §2.7 AC2 from the
SignatureHasher unit-test surface (iter 15) to the public BfldPipeline
API surface. Every assertion goes through pipeline.process() so the
chain exercises emitter → identity_features encoder → signature hasher
→ event construction end-to-end.
Added (in v2/crates/wifi-densepose-bfld/tests/pipeline_i3_isolation.rs):
- 7 named tests, all green:
same_person_at_different_sites_same_day_produces_different_hashes
same_person_same_site_different_day_rotates_the_hash
thirty_day_gap_produces_thoroughly_different_hash
(Hamming distance >= 80 bits — catches a weak day_epoch mix-in
even if naive byte-equality remains different)
same_person_same_site_same_day_produces_stable_hash
cross_site_hamming_distance_at_pipeline_surface_is_statistically_high
*** ADR-120 §2.7 AC2 at the public pipeline surface ***
32 trials × 32 bytes; mean Hamming distance ≥ 120 bits required
(the same threshold the iter-15 SignatureHasher-direct test used)
restricted_class_strips_hash_but_pipeline_state_advances
(class 3 contract: hash stripped from event surface but the
underlying gate / ring / hasher state still updates so the
pipeline keeps detecting things; future PR can't accidentally
short-circuit at class 3 and miss legitimate sensing)
pipeline_without_signature_hasher_does_not_invent_a_hash
(no hasher installed → rf_signature_hash stays None)
ADR-124 status (from sibling-agent check in this iter's step 0):
- docs/adr/ADR-124-* not present yet
- docs/research/rvagent-rvf-integration/README.md present (iter 25)
- No conflict with current scope; will pick up sibling output on next iter
ACs progressed:
- ADR-118 invariant I3 — runtime proof now at the PUBLIC API surface,
not just inside SignatureHasher. Operators reading the BfldPipeline
documentation can verify cross-site isolation without descending
into the hasher internals.
- ADR-120 §2.7 AC2 — pipeline-surface mean Hamming distance >= 120
bits in the cross_site test pins the structural-isolation invariant
at the same threshold as the iter-15 unit-level test.
- ADR-118 §1.5 — restricted_class_strips_hash test pins the
defense-in-depth contract that class-3 doesn't accidentally also
freeze pipeline state.
Test config:
- cargo test --no-default-features → 72 passed (pipeline_i3_isolation cfg-out)
- cargo test → 217 passed (210 + 7)
Out of scope (next iter target):
- GitHub Actions workflow with mosquitto Docker (lifts iters 24+29
from skip-mode in CI).
- ADR-119 AC7 serialization throughput benchmark (50k frames/sec).
- ADR-122 AC3: 1Hz motion-publish rate integration test against the
BfldPipelineHandle worker thread.
Co-Authored-By: claude-flow <ruv@ruv.net>