Enabling claude-mem per directory/project

[github-actions[bot]]

Originally posted as issue #2308 by @iDrwish
#2308

Is your feature request related to a problem? Please describe.
I want to use claude-mem selectively, but today project control appears to be mainly opt-out through CLAUDE_MEM_EXCLUDED_PROJECTS.

That works for a small number of excluded projects, but it becomes hard to manage when I only want memory capture for a few high-value projects. It also creates quota risk: if claude-mem is enabled globally, any new or noisy project can start generating observations/summaries unless I remember to add it to the exclusion list.

Describe the solution you'd like
Add an opt-in project marker mode. When marker mode is enabled, claude-mem would only run hooks for a session if the current working directory, or one of its parent directories, contains the marker file.

Describe alternatives you've considered

• Use CLAUDE_MEM_EXCLUDED_PROJECTS: works, but it is opt-out and easy to forget for new/noisy projects.
  • Disable the plugin globally
  • Patch hook commands locally with a wrapper script: brittle

Additional context
Add any other context or screenshots about the feature request here.