Mem0 Project Tour

Show the user what mem0 has stored for the current project.

Cross-project mode

When invoked with --all-projects (e.g., /mem0:tour --all-projects or /mem0:tour --all-projects auth middleware), search across ALL projects:

1. Call get_memories with filters={"AND": [{"user_id": "<active_user_id>"}]}, page_size=200 — no app_id filter.
2. If a search query was also provided, run search_memories with query=<query>, filters={"AND": [{"user_id": "<active_user_id>"}]}, top_k=20 — again no app_id.
3. Group results by app_id first, then by category within each project.
4. Display:

   ## <app_id_1> (<N> memories) ← current
   **Architecture Decisions** — <memory content>
   ...