Clean up environment files to remove obsolete relay URL configuration

- Remove REACT_APP_OWN_RELAY_URL from .env.production, .env.development, and .env.production.example
- Remove REACT_APP_NOSTR_RELAY_URLS references from all environment files
- Update comments to reflect that Nostr operations now use panel API
- Simplifies environment configuration after removing direct relay connections

Author: Maphikza

.env.development

@@ -4,9 +4,7 @@ REACT_APP_ASSETS_BUCKET=http://localhost
 REACT_APP_DEMO_MODE=false
 REACT_APP_BASENAME=
 
-# Nostr relay configuration for profile fetching
-REACT_APP_OWN_RELAY_URL=ws://localhost:9001
-# REACT_APP_NOSTR_RELAY_URLS=wss://your-relay1.com,wss://your-relay2.com,wss://your-relay3.com
+# Nostr operations now use panel API - no relay URLs needed
 
 # More info https://create-react-app.dev/docs/advanced-configuration
 ESLINT_NO_DEV_ERRORS=true

.env.production

@@ -13,9 +13,7 @@ PUBLIC_URL=
 # Asset serving configuration (optional - adjust for your domain)
 # REACT_APP_ASSETS_BUCKET=https://your-domain.com
 
-# Nostr relay configuration for profile fetching
-REACT_APP_OWN_RELAY_URL=ws://localhost:9001
-# REACT_APP_NOSTR_RELAY_URLS=wss://your-relay1.com,wss://your-relay2.com
+# Nostr operations now use panel API - no relay URLs needed
 
 # Development optimizations
 ESLINT_NO_DEV_ERRORS=true

.env.production.example

@@ -11,9 +11,7 @@ PUBLIC_URL=/panel
 # Asset serving configuration (optional - adjust for your domain)
 # REACT_APP_ASSETS_BUCKET=https://your-domain.com
 
-# Nostr relay configuration for profile fetching
-# REACT_APP_OWN_RELAY_URL=  # ✅ Auto-detected from current domain
-# REACT_APP_NOSTR_RELAY_URLS=wss://your-relay1.com,wss://your-relay2.com
+# Nostr operations now use panel API - no relay URLs needed
 
 # Development optimizations
 ESLINT_NO_DEV_ERRORS=true