Forget this repository's memories

This permanently deletes remote memories. Before running anything, tell the user exactly what will be deleted: their own memories for this repository only. The repository's project memory is shared by everyone who works in it, so it stays unless the user explicitly asks to delete that too.

After the user confirms, run:

python3 "${CLAUDE_PLUGIN_ROOT}/core/memory_cli.py" forget --remote --yes

If the user also asked to delete the repository's shared project memory, add --include-project-memory and say that this removes it for every teammate.