fix(scripts): allow command expansion in integration runner

integration/suites/mcp-streamable/docker-compose.yml

@@ -8,6 +8,7 @@ services:
       - .:/src
     working_dir: /src
     environment:
+      PATH: "/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
       PICOCLAW_MCP_REAL_SERVER_JSON: >-
         {"enabled":true,"type":"http","url":"http://mcp-streamable-server:8080/mcp"}
       PICOCLAW_MCP_REAL_TOOL_NAME: echo

scripts/run-integration-tests.sh

@@ -89,7 +89,7 @@ run_suite() {
     fi
 
     echo "==> [$suite_name] running: $TEST_COMMAND"
-    docker compose "${compose_args[@]}" run --rm "$runner_service" "$TEST_COMMAND"
+    docker compose "${compose_args[@]}" run --rm "$runner_service" $TEST_COMMAND
   )
 }