- alert_entity_scope: add is_attributable_period / guard_alert_period (R5) and entity_alert_guard (R1, any write path)
- alert_rules.run_all_alert_checks: skip non-YYYY-MM period alert rows (R5)
- bot_bridge / bot_bridge_v2: R1 demo-entity guard + R5 period guard on write paths
- tests: new R5 suite (10 cases)
Not pushed / not deployed (release gate held by 任总).
R1: exclude status=demo entities from alert traversal (alert_generator / deviation_engine / kpi_bep_deriver / alert_rules / cash engine)
R2: only generate alerts within the last 6 calendar months (incl. current)
R3: only regular month periods (YYYY-MM) participate
R4: decouple generation from push - empty notification_channels never blocks
Single source of truth: app/utils/alert_entity_scope.py
Hermes CI Fix