Begin payment logic and tests

src/.env.example

@@ -7,21 +7,28 @@
 GAME_MODE=PAID_SINGLE
 
 # Cryptocurrency Configuration
-CRYPTO_TYPE=XMR
+CRYPTO_TYPE=WOW
 # Payment amounts in atomic units (piconeros for XMR, tacoshis for WOW)
 # XMR: 0.005 XMR = 5000000000 piconeros
 # WOW: 1 WOW = 100000000000 tacoshis
-SINGLE_GAME_PRICE=5000000000
-CREDITS_PACKAGE_PRICE=50000000000
+# You can use plain integers, scientific notation (e.g. 5e9), or underscores (e.g. 5_000_000_000)
+# The parser will coerce to an integer atomic unit amount.
+SINGLE_GAME_PRICE=1e11            # 1 WOW 
+CREDITS_PACKAGE_PRICE=5e11        # 5 WOW 
+# SINGLE_GAME_PRICE=5e9            # 0.005 XMR (was 5000000000)
+# CREDITS_PACKAGE_PRICE=5e10        # 0.05 XMR (was 50000000000)
+# Alternative readable style:
+# SINGLE_GAME_PRICE=5_000_000_000
+# CREDITS_PACKAGE_PRICE=50_000_000_000
 
-# Wallet RPC Configuration (replaces MoneroPay)
+# Wallet RPC Configuration 
 PRIMARY_WALLET_ENDPOINT=http://127.0.0.1:34570
 # WALLET_RPC_USER=user
 # WALLET_RPC_PASSWORD=password
 
 # Blockchain RPC Configuration
-PRIMARY_RPC_ENDPOINT=http://jw-nodes:18081
-FALLBACK_RPC_ENDPOINT=http://jw-nodes:18081
+PRIMARY_RPC_ENDPOINT=http://127.0.0.1:34568
+FALLBACK_RPC_ENDPOINT=http://127.0.0.1:34568
 RPC_POLL_INTERVAL=2000
 
 # Database Configuration
@@ -35,6 +42,20 @@ DB_PASSWORD=jw
 PORT=3000
 NODE_ENV=production
 
+# Block Height Source & Debug Controls
+# BLOCK_SOURCE=daemon   -> always use real blockchain height (default for paid modes)
+# BLOCK_SOURCE=simulated -> force simulated blocks (development)
+# SIMULATED_BLOCKS=true/false overrides automatic detection (if set)
+# FORCE_SIMULATED_BLOCKS=true will force simulation even in paid modes (for local testing)
+# Examples:
+# BLOCK_SOURCE=daemon
+# BLOCK_SOURCE=simulated
+# SIMULATED_BLOCKS=false
+# FORCE_SIMULATED_BLOCKS=true
+BLOCK_SOURCE=daemon
+# SIMULATED_BLOCKS=false
+# FORCE_SIMULATED_BLOCKS=false
+
 # Payout Configuration
 PAYOUT_BATCH_INTERVAL=300000
 MAX_PAYOUT_BATCH_SIZE=50