anti bb77d13f9a feat(api/attackers): per-attacker SSE events stream ...

GET /api/v1/attackers/{uuid}/events streams behavioural events for
one attacker. Mirrors decnet/web/router/topology/api_events.py
end-to-end: ?token= auth, require_stream_viewer gate,
sse_connection_slot per-user cap, snapshot-on-connect, three bus
subscriptions (attacker.observation.>, attacker.fingerprint_rotated,
attacker.scored) merged through asyncio.Queue, 15s keepalive,
request.is_disconnected() exit, finally task cancellation.

Per-attacker filter keys on payload['attacker_uuid'] which the
profiler worker stamps onto every published payload (Phase 5 P5.0
amendment) — O(1) drop without a repo round-trip per event.

_sse_name_for derives SSE event names:
  attacker.observation.<primitive> → observation.<primitive>
  attacker.fingerprint_rotated     → fingerprint.rotated
  attacker.scored                  → attacker.scored

10 tests cover snapshot, live forward, per-attacker filter (drops
other attackers' events), fingerprint.rotated forward, 404, 401, and
the sse-name derivation across all four cases. Topology events
regression green.

2026-05-08 20:23:29 -04:00

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