1. Install cron package in Dockerfile and start cron daemon in entrypoint
   (hourly: php cli.php cron). This was missing — cron jobs never ran.
2. SubscriptionGeneratorJob now delegates to SubscriptionGenerator service
   which handles exemptions, year-specific rates/discounts, per-person dedup.
3. Financial year 2026/2027 subscriptions will generate on next cron run
   (July 1-7 window still active).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>