anti
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Additive Phase 1 of BEHAVE-INTEGRATION.md. Lays the storage layer the BEHAVE-SHELL extractor (DEBT-050) will write into. Nothing breaks; SessionProfile coexists for now and is dropped in the follow-up commit. decnet/web/db/models/observations.py — new ObservationRow SQLModel mirroring the BEHAVE Observation envelope field-for-field (core/decnet_behave_core/spec/envelope.py). ``id`` is a hex-string UUID (matching BEHAVE), not a typed UUID column. ``identity_ref`` is str | None — written by the future attribution engine, NULL until then. ``attacker_uuid`` is the one DECNET-side denormalisation; FK'd to attackers.uuid for cheap AttackerDetail joins. ``evidence_ref`` is NOT NULL for DECNET emissions even though the upstream envelope makes it optional — the worker's "already profiled?" check keys on it. UniqueConstraint(evidence_ref, primitive) enforces idempotency at the schema level so re-running the extractor on the same shard+sid produces a DB-side conflict the upsert path resolves deterministically. Class is named ``ObservationRow`` (not ``Observation``) to avoid colliding with the BEHAVE Pydantic envelope at sites that import both. decnet/web/db/sqlmodel_repo/observations.py — ObservationsMixin. Three public methods backing the canonical queries from BEHAVE-INTEGRATION.md §"Storage": ``upsert_observation`` (idempotent on the natural key), ``latest_observation_per_primitive`` (per- primitive MAX(ts) subquery, portable across SQLite and MySQL — no DISTINCT ON), ``observations_time_series`` (asc-by-ts). Plus ``has_observations_for_evidence`` for the worker's session-already- profiled check. decnet/bus/topics.py — ATTACKER_OBSERVATION_PREFIX = "observation" constant + ``attacker_observation(primitive)`` builder. Full topic shape ``attacker.observation.<primitive>`` matches what BEHAVE's spec.event_adapter.event_topic_for produces upstream. Documentation + pattern matching only — bus auth is socket file perms (DEBT-029 §2), not topic-level. decnet/web/db/repository.py — abstract ``upsert_observation``, ``latest_observation_per_primitive``, ``observations_time_series`` on BaseRepository. tests/db/test_observations.py — 11 tests covering upsert round-trip, idempotency under the unique constraint, latest-per-primitive ordering across multiple sessions, time-series asc-ordering, empty- attacker contract, every BEHAVE ValueKind round-tripping through the JSON column, and the has_observations_for_evidence check. tests/db/test_base_repo.py — DummyRepo gains the three new abstract overrides so its coverage suite still instantiates.
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