After the existing webhook-loss drift detection (R-05.1: lead delivered but
webhook missed), CsvReconcileJob now runs a second pass on project_routing_snapshots:
per (snapshot_date, tenant_id) groups, if (expected - delivered) / expected > 20%
→ send TenantBusinessDriftAlertMail (separate from CsvDriftAlertMail).
This catches R-05.2: lead expected by slepok plan but supplier under-delivered.
Same lead can be missing from both CSV (webhook-loss) AND delivered_count
(business-shortfall) — both alerts fire independently.
BUSINESS_DRIFT_THRESHOLD = 0.20
detectAndAlertBusinessDrift() — runs after primary drift inside try{} block,
scoped to the same reconcile window. One email per tenant per snapshot_date.
+ New TenantBusinessDriftAlertMail + emails/tenant_business_drift_alert.blade.php.
+ 2 Pest tests: shortfall>20% triggers mail (80% case), shortfall<=20% does not (10% case).
+ Existing tests narrowed from assertNothingSent() to assertNotSent(CsvDriftAlertMail)
since legacy snapshot data on dev DB may trigger TenantBusinessDriftAlertMail
beyond test's scope.
Full CsvReconcileJobTest suite 11/11 GREEN. Stage 4 §4.4.4.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Дмитрий
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