Add Ladill Link URL shortener on ladl.link.

Management UI at link.ladill.com with GHS 0.05 per link wallet billing,
click analytics, and legacy fallback to ladill.com/q for QR ecosystem codes.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

@@ -1,20 +1,20 @@
-APP_NAME="Ladill QR Plus"
+APP_NAME="Ladill Link"
 APP_ENV=production
 APP_KEY=
 APP_DEBUG=false
-APP_URL=https://qrplus.ladill.com
+APP_URL=https://link.ladill.com
 
 PLATFORM_URL=https://ladill.com
 PLATFORM_DOMAIN=ladill.com
 AUTH_DOMAIN=auth.ladill.com
 ACCOUNT_DOMAIN=account.ladill.com
-QR_DOMAIN=qrplus.ladill.com
+LINK_PUBLIC_DOMAIN=ladl.link
 
 DB_CONNECTION=mysql
 DB_HOST=127.0.0.1
 DB_PORT=3306
-DB_DATABASE=ladill_qr_plus
-DB_USERNAME=ladill_qr_plus
+DB_DATABASE=ladill_link
+DB_USERNAME=ladill_link
 DB_PASSWORD=
 
 SESSION_DRIVER=database
@@ -25,15 +25,11 @@ LADILL_SSO_CLIENT_ID=
 LADILL_SSO_CLIENT_SECRET=
 
 BILLING_API_URL=https://ladill.com/api/billing
-BILLING_API_KEY_QR=
+BILLING_API_KEY_LINK=
 
 IDENTITY_API_URL=https://ladill.com/api
-IDENTITY_API_KEY_QR=
+IDENTITY_API_KEY_LINK=
 
-AFIA_ENABLED=true
-AFIA_PRODUCT=qr
-AFIA_PROVIDER=openai
-AFIA_MODEL=gpt-4o-mini
-AFIA_API_KEY=
+LINK_PRICE_PER_LINK_GHS=0.05
 
 VITE_APP_NAME="${APP_NAME}"