Add live money configuration setup

.env.example

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+# Cloud state
+BLOB_READ_WRITE_TOKEN=
+PMA_STATE_PATH=shared/state.json
+
+# Live-money feature gate
+# Keep false until legal/compliance approval, provider credentials, wallet signing,
+# payment rails, and audit logging are production-ready.
+LIVE_TRADING_ENABLED=false
+
+# Eligibility / compliance provider
+KYC_PROVIDER=
+KYC_API_KEY=
+KYC_WEBHOOK_SECRET=
+RESTRICTED_JURISDICTIONS=US,CA-NY,CA-ON
+
+# Wallet / deposit-wallet provider
+WALLET_PROVIDER=
+WALLET_PROJECT_ID=
+WALLET_API_KEY=
+DEPOSIT_WALLET_ADDRESS=
+POLYMARKET_SIGNATURE_TYPE=3
+
+# Payments / deposits / withdrawals
+PAYMENTS_PROVIDER=
+PAYMENTS_API_KEY=
+PAYMENTS_WEBHOOK_SECRET=
+SETTLEMENT_ASSET=pUSD
+SETTLEMENT_CHAIN=polygon
+
+# Polymarket CLOB credentials
+POLYMARKET_CLOB_HOST=https://clob.polymarket.com
+POLYMARKET_CHAIN_ID=137
+POLYMARKET_CLOB_API_KEY=
+POLYMARKET_CLOB_SECRET=
+POLYMARKET_CLOB_PASSPHRASE=
+
+# Audit / monitoring
+AUDIT_LOG_STORE=
+ADMIN_ALERT_EMAIL=
+RISK_ADMIN_WALLET=