Initial commit: nightly iOS app + Supabase backend

iOS SwiftUI app with Supabase auth/realtime, Node.js backend,
Docker/Supabase self-hosted infrastructure, and APNs scheduler.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/.env.example

@@ -0,0 +1,8 @@
+DB_PASSWORD=change_me_use_a_strong_password
+JWT_SECRET=change_me_use_a_very_long_random_string_min_64_chars
+
+# Apple Push Notifications
+APNS_KEY_PATH=/app/certs/AuthKey_XXXXXXXX.p8
+APNS_KEY_ID=XXXXXXXXXX
+APNS_TEAM_ID=XXXXXXXXXX
+APNS_BUNDLE_ID=app.nightly