Add env struct

backend/.env.template

@@ -1,10 +1,8 @@
 # Server
-HOST=127.0.0.1
-PORT=2892
-ALLOW_ORIGINS=                 # Optional comma-separated allowed CORS origins; empty = permissive
-
-# Auth
-ADMINS=                        # Comma-separated hex pubkeys with admin access
+SERVER_HOST=127.0.0.1
+SERVER_PORT=2892
+SERVER_ALLOW_ORIGINS=                 # Optional comma-separated allowed CORS origins; empty = permissive
+SERVER_ADMIN_PUBKEYS=                 # Comma-separated hex pubkeys with admin access
 
 # Database
 DATABASE_URL=sqlite://data/caravel.db
@@ -14,13 +12,13 @@ ROBOT_SECRET=                  # Nostr private key (hex)
 ROBOT_NAME=
 ROBOT_DESCRIPTION=
 ROBOT_PICTURE=
-ROBOT_OUTBOX_RELAYS=relay.damus.io,relay.primal.net,nos.lol
-ROBOT_INDEXER_RELAYS=purplepag.es,relay.damus.io,indexer.coracle.social
-ROBOT_MESSAGING_RELAYS=auth.nostr1.com,relay.keychat.io,relay.ditto.pub
+ROBOT_WALLET=                  # Nostr Wallet Connect URL for generating Lightning invoices
+ROBOT_OUTBOX_RELAYS=wss://relay.damus.io,wss://relay.primal.net,wss://nos.lol
+ROBOT_INDEXER_RELAYS=wss://purplepag.es,wss://relay.damus.io,wss://indexer.coracle.social
+ROBOT_MESSAGING_RELAYS=wss://auth.nostr1.com,wss://relay.keychat.io,wss://relay.ditto.pub
 
 # Zooid
 ZOOID_API_URL=http://127.0.0.1:3334
-ZOOID_API_SECRET=
 RELAY_DOMAIN=spaces.coracle.social
 LIVEKIT_URL=
 LIVEKIT_API_KEY=
@@ -34,8 +32,6 @@ BLOSSOM_S3_ACCESS_KEY=
 BLOSSOM_S3_SECRET_KEY=
 
 # Billing
-NWC_URL=                      # Nostr Wallet Connect URL for generating Lightning invoices
-ENCRYPTION_SECRET=            # Nostr secret key (hex or nsec) used to encrypt tenant NWC URLs at rest
 STRIPE_SECRET_KEY=            # Required Stripe API secret key (sk_...)
 STRIPE_WEBHOOK_SECRET=whsec_test_00000000000000000000000000  # Webhook signing secret (use real value in production)
 STRIPE_PRICE_BASIC=           # Stripe price ID (price_...) for the Basic plan; required for paid plans