Feature request:  /resume  and  /session  should support filtering by current working directory

Describe the feature or problem you'd like to solve

Currently,  /resume  and  /session  list ALL sessions across every project/directory I've ever worked in, with no way to scope the list to the current repo/cwd. This makes it hard to find the right session to resume when I have many sessions across different projects.

Proposed solution

Requested behavior:

• By default,  /resume  and  /session  should show only sessions started in (or associated with) the current working directory / repo.
• Provide a flag or toggle (e.g.  /resume --all ) to view sessions from all directories when needed.
• Same behavior for  copilot --resume  from the CLI flag.

This would make session resumption much faster and less error-prone for users who work across multiple repositories.

Example prompts or workflows

No response

Additional context

No response

Commencez par suivre les commandes /resume et /session ainsi que le point d’entrée CLI copilot --resume, puis examinez la manière dont les sessions enregistrent ou associent leur répertoire de travail. Le travail est considéré comme terminé lorsque la liste par défaut n’affiche que les sessions du répertoire ou du dépôt courant, tandis qu’une option all-sessions explicite conserve la vue plus large sur les trois points d’entrée.