Referral page, bug fixes, seed data, persona tiers

- New /refer page with share/copy/stats
- Fixed modal z-index conflicts (z-50 → z-[60]) across forum, groups, souq, halal-monitor
- Seed route: forum categories, marketplace listings, private groups
- Mufti/Daie personas now available in Premium tier
- Fixed referral share link: falahos.my/mobile/auth?ref=CODE
- Fixed client-side persona access check for premium

.dockerignore

@@ -0,0 +1,4 @@
+# Exclude source dev.db — live DB is on persistent volume at /app/data/dev.db
+prisma/dev.db*
+prisma/*.db-wal
+prisma/*.db-shm