Standardize deployment env and deployer handling

scripts/deployment/deploy-contracts-ordered.sh

@@ -28,23 +28,13 @@ elif [[ -n "${REPO_ROOT:-}" && -f "$REPO_ROOT/.env" ]]; then
   set +a
 fi
 
-# Load environment variables
-if [ ! -f .env ]; then
-    log_error "Error: .env file not found"
-    echo "Please create .env file with required variables"
-    exit 1
-fi
-
-source .env
-
-# Check required variables
-if [ -z "$PRIVATE_KEY" ]; then
-    log_error "Error: PRIVATE_KEY not set in .env"
+if ! require_private_key_env; then
     exit 1
 fi
 
+RPC_URL="${RPC_URL:-${RPC_URL_138:-${CHAIN138_RPC_URL:-}}}"
 if [ -z "$RPC_URL" ]; then
-    log_error "Error: RPC_URL not set in .env"
+    log_error "ERROR: Chain 138 RPC not available. Set RPC_URL, RPC_URL_138, or CHAIN138_RPC_URL."
     exit 1
 fi
 
@@ -62,7 +52,7 @@ log_success "✅ RPC endpoint is accessible"
 update_env() {
     local key=$1
     local value=$2
-    if grep -q "^${key}=" .env; then
+    if grep -q "^${key}=" .env 2>/dev/null; then
         sed -i "s|^${key}=.*|${key}=${value}|" .env
     else
         echo "${key}=${value}" >> .env
@@ -240,7 +230,7 @@ ORACLE_HEARTBEAT=${ORACLE_HEARTBEAT:-"60"}
 ORACLE_DEVIATION_THRESHOLD=${ORACLE_DEVIATION_THRESHOLD:-"50"}
 
 # Get deployer address
-DEPLOYER_ADDRESS=$(cast wallet address --private-key "$PRIVATE_KEY" 2>/dev/null || echo "")
+    DEPLOYER_ADDRESS="$(derive_deployer_address || true)"
 
 if [ -z "$DEPLOYER_ADDRESS" ]; then
     log_warn "Warning: Could not get deployer address. Using script default"