Standardize deployment env and deployer handling

scripts/deployment/verify-contract-etherscan.sh

@@ -24,19 +24,10 @@ elif [[ -n "${REPO_ROOT:-}" && -f "$REPO_ROOT/.env" ]]; then
   set +a
 fi
 
-
-# Load environment variables
-if [ -f "$PROJECT_ROOT/.env" ]; then
-    source "$PROJECT_ROOT/.env"
-else
-    log_error "Error: .env file not found"
-    exit 1
-fi
-
 log_info "=== Etherscan Contract Verification ==="
 
 if [ -z "$ETHERSCAN_API_KEY" ]; then
-    log_error "Error: ETHERSCAN_API_KEY not set in .env"
+    log_error "ERROR: ETHERSCAN_API_KEY not available. Set it in smom-dbis-138/.env or repo .env."
     exit 1
 fi