Summary

The Mem0 provider writes memories with both user_id and agent_id (see _write_filters), but _read_filters only queried by user_id. The Mem0 Platform API matches filters strictly, so agent-attributed memories were invisible to mem0_profile, mem0_search, and prefetch.

Fix

Changed _read_filters() to use an OR filter that matches both:

• older user-only memories (no agent_id)
• newer memories saved with both user_id and agent_id

Before

def _read_filters(self):
    return {"user_id": self._user_id}

After

def _read_filters(self):
    return {
        "OR": [
            {"user_id": self._user_id},
            {"user_id": self._user_id, "agent_id": self._agent_id},
        ]
    }

Verification

• ✅ All 16 mem0 tests pass
• ✅ All 168 memory plugin tests pass with no regressions

Closes #38424

Notes

• This is a doc-type auto-fix PR generated by the auto-fixer engine.
• The fix is minimal and focused — only _read_filters() and the corresponding test assertions changed.
• The OR filter format matches the Mem0 Platform API's documented filter syntax.