Four-part fix for the collection bottleneck that was blocking the dev loop:
1. Lazy mitreattack.stix20 import in attack_stix.py — deferred to first
_load() call (TYPE_CHECKING guard at top level)
2. Lazy misp_stix_converter import in both MISP export routers — moved
from module level into the route handler body
3. Lazy attack_catalog / attack_stix in ttp.py repo mixin — thin wrapper
functions so the import chain never fires at module load time
4. tests/api/conftest.py — `from decnet.web.api import app` moved inside
the `client()` fixture; `pytest_ignore_collect` broadened to skip all
test_schemathesis*.py variants (not just test_schemathesis.py), which
were launching a subprocess server at module-import time
5. pyproject.toml — `norecursedirs` for tests/live, tests/stress,
tests/service_testing, tests/docker, tests/perf so these directories
are never entered; `-m` filter removed from addopts (now redundant);
`--dist loadscope` → `--dist load` to unblock workers immediately
6. behave_core / behave_shell rename — BEHAVE packages dropped the
`decnet_` prefix; reinstalled editable installs and updated all 14
import sites across profiler, ttp, bus, and correlation modules
Add tick_multi_actor() — periodic walk of attribution_state firing
attribution.profile.multi_actor_suspected when an identity carries
>= MULTI_ACTOR_MIN_PRIMITIVES rows in multi_actor state.
* Repo's list_multi_actor_identities() already filters to >= 2
primitives; the correlator just dispatches.
* In-memory dedup keyed on identity_uuid -> frozenset(primitives):
same set as last fire -> no re-emit. Set grows -> re-emit.
Set shrinks below threshold -> evict so a future re-flap re-fires.
Restart-resets are honest because attribution_state persists; a
v1 multi_actor_suspect_log table can replace this if needed.
* run_attribution_loop() now supervises three concurrent tasks:
observation handler, multi_actor tick loop, health/control. Tick
interval comes from _thresholds.MULTI_ACTOR_TICK_SECS (60s) with
test override.
Tests: 6 scenarios — single-primitive doesn't fire, two-primitive
co-flag fires, dedup blocks unchanged set, set growth re-fires,
threshold drop re-arms, multiple identities fire independently.
attribution_worker.handle_observation_event now executes the full
end-to-end path:
* ensure stub identity (Phase 1)
* observations_for_identity_primitive() — new repo helper joining
observations through attackers.identity_id, so v1's clusterer
gets cross-attacker rollup for free
* aggregate_observations() with ValueKind dispatched off the BEHAVE
PRIMITIVE_REGISTRY; unknown primitives default to categorical
* upsert_attribution_state() — last_change_ts locked when state is
unchanged so the dashboard can render "stable since X"
* publish attribution.profile.state_changed only on transition;
idempotent re-runs over the same observation set fire nothing
(loop-prevention invariant matching ttp.tagged)
Tests:
* 5 end-to-end attribution scenarios over in-memory SQLite + FakeBus.
* test_base_repo's DummyRepo + coverage body now stub every abstract
surface BaseRepository declares — the 6 added by this branch plus
the 12 left un-stubbed by earlier work (BEHAVE Phase 1, TTP
rollups, iter helpers). The coverage test could not previously
even instantiate.
* test_aggregate_categorical's dispatcher rejection updated for the
Phase 3 + 4 contract — ValueError on unknown kinds, not
NotImplementedError.
v0 Phase 1 of ATTRIBUTION-ENGINE.md:
* AttributionStateRow SQLModel keyed on (identity_uuid, primitive)
per ANTI direction — re-keying state rows when the v1 clusterer
merges attackers is the migration debt v0 should not bake in.
ATTRIBUTION-ENGINE.md updated with the deviation note.
* AttributionMixin: ensure_stub_identity_for_attacker, idempotent
upsert_attribution_state, get_attribution_state[_for_identity],
list_multi_actor_identities (the Phase 5 correlator's read).
* attribution.profile.{state_changed,multi_actor_suspected} bus
topics + builder; wiki Service-Bus.md updated separately.
* attribution_worker.py: subscribes to attacker.observation.>,
ensures stub identity per event, logs and continues. No merger,
no state writes, no derived events — Phase 4 wires those.
* attribution/{aggregate.py,_thresholds.py} skeletons: Phase 2
fills _aggregate_categorical, Phase 3 adds numeric+hash+dispatcher.
