/ggc addons reads GetAddOnMemoryUsage when ClassicAPI provides it, so the
!!!!GentleGC_Memory companion is only needed without it. /ggc also shows the
client's scriptMemory limit and warns when scriptProfile is on.
Adds tests/test_native_memory.lua.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019W3rwtugSE5NbbiWQCbbKX
