Standardize deployment env and deployer handling

scripts/deployment/deploy-contracts-unified.sh

@@ -28,7 +28,7 @@ fi
 
 # Default values
 MODE="${MODE:-ordered}"  # ordered or parallel
-RPC_URL="${RPC_URL:-http://localhost:8545}"
+RPC_URL="${RPC_URL:-}"
 PRIVATE_KEY="${PRIVATE_KEY:-}"
 DRY_RUN="${DRY_RUN:-false}"
 
@@ -81,24 +81,19 @@ while [[ $# -gt 0 ]]; do
             usage
             ;;
         *)
-            echo "Unknown option: $1"
+            echo "ERROR: Unknown option: $1" >&2
             usage
             ;;
     esac
 done
 
-if [ -z "$PRIVATE_KEY" ]; then
-    if [ -f .env ]; then
-        source .env
-    fi
-    if [ -z "$PRIVATE_KEY" ]; then
-        log_error "Error: PRIVATE_KEY not set. Use --private-key or set in .env"
-        exit 1
-    fi
+if ! require_private_key_env "Use --private-key or set PRIVATE_KEY in smom-dbis-138/.env, repo .env, or ~/.secure-secrets/private-keys.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. Use --rpc-url or set in .env"
+    log_error "ERROR: Chain 138 RPC not available. Use --rpc-url or set RPC_URL/RPC_URL_138/CHAIN138_RPC_URL."
     exit 1
 fi