fix: add --base-url CLI option to smoke-edge-subpath.sh for flexible BASE_URL handling

tests/smoke-edge-subpath.sh

@@ -298,11 +298,42 @@ check_redirects_to() {
   fi
 }
 
+# ─────────────────────────────────────────────────────────────────────────────
+# Argument parsing
+# ─────────────────────────────────────────────────────────────────────────────
+
+parse_args() {
+  while [ $# -gt 0 ]; do
+    case "$1" in
+      --base-url)
+        BASE_URL="$2"
+        shift 2
+        ;;
+      -h|--help)
+        echo "Usage: $0 [--base-url BASE_URL]"
+        echo ""
+        echo "Environment variables:"
+        echo "  BASE_URL         — Edge proxy URL (default: http://localhost)"
+        echo "  EDGE_TIMEOUT     — Request timeout in seconds (default: 30)"
+        echo "  EDGE_MAX_RETRIES — Max retries per request (default: 3)"
+        exit 0
+        ;;
+      *)
+        echo "Unknown option: $1" >&2
+        echo "Usage: $0 [--base-url BASE_URL]" >&2
+        exit 1
+        ;;
+    esac
+  done
+}
+
 # ─────────────────────────────────────────────────────────────────────────────
 # Main test suite
 # ─────────────────────────────────────────────────────────────────────────────
 
 main() {
+  parse_args "$@"
+
   log_section "Edge Subpath Routing Smoke Test"
   log_info "Base URL: $BASE_URL"
   log_info "Timeout: ${EDGE_TIMEOUT}s, Max retries: $EDGE_MAX_RETRIES"
@@ -386,5 +417,6 @@ main() {
   exit 0
 }
 
-# Run main
+# Parse arguments and run main
+parse_args "$@"
 main "$@"