Samir Boulahtit
52b78ce346
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Add async email notifications for 5 loyalty lifecycle events, using the existing messaging module infrastructure (EmailService, EmailLog, store template overrides). - New seed script: scripts/seed/seed_email_templates_loyalty.py Seeds 5 templates × 4 locales (en/fr/de/lb) = 20 rows. Idempotent. Renamed existing script to seed_email_templates_core.py. - Celery task: loyalty.send_notification_email — async dispatch with 3 retries and 60s backoff. Opens own DB session. - Notification service: LoyaltyNotificationService with 5 methods that resolve customer/card/program into template variables and enqueue via Celery (never blocks request handlers). - Enrollment: sends loyalty_enrollment + loyalty_welcome_bonus (if bonus > 0) after card creation commit. - Stamps: sends loyalty_reward_ready when stamp target reached. - Expiration task: sends loyalty_points_expiring 14 days before expiry (tracked via new last_expiration_warning_at column to prevent dupes), and loyalty_points_expired after points are zeroed. - Migration loyalty_005: adds last_expiration_warning_at to cards. - 8 new unit tests for notification service dispatch. - Fix: rate limiter autouse fixture in integration tests to prevent state bleed between tests. Templates: loyalty_enrollment, loyalty_welcome_bonus, loyalty_points_expiring, loyalty_points_expired, loyalty_reward_ready. All support store-level overrides via the existing email template UI. Birthday + re-engagement emails deferred to future marketing module (cross-platform: OMS, loyalty, hosting). 342 tests pass. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>