chore(scripts): use load_explorer_runtime_env + address-inventory helper

Align remaining shell scripts with shared env loading (no direct .env source).

Made-with: Cursor

scripts/send-with-optimal-gas.sh

@@ -7,6 +7,7 @@ set -euo pipefail
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+source "$PROJECT_ROOT/scripts/lib/address-inventory.sh"
 
 # Colors
 RED='\033[0;31m'
@@ -20,19 +21,14 @@ log_success() { echo -e "${GREEN}[✓]${NC} $1"; }
 log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
 log_error() { echo -e "${RED}[ERROR]${NC} $1"; }
 
-# Load environment variables
-if [ -f "$PROJECT_ROOT/.env" ]; then
-    source "$PROJECT_ROOT/.env"
-elif [ -f "$PROJECT_ROOT/../.env" ]; then
-    source "$PROJECT_ROOT/../.env"
-fi
+load_explorer_runtime_env
 
 # Configuration
 RPC_URL="${RPC_URL_138:-http://192.168.11.250:8545}"
 GAS_MULTIPLIER="${GAS_MULTIPLIER:-1.5}"  # Use 1.5x current gas for faster inclusion
 
 if [ -z "${PRIVATE_KEY:-}" ]; then
-    log_error "PRIVATE_KEY not found in .env"
+    log_error "PRIVATE_KEY not available in effective environment"
     exit 1
 fi
 
@@ -151,4 +147,3 @@ else
     
     exit 1
 fi
-