This is a comment left during a code review.
Path: extensions/matrix/src/matrix/monitor/direct.test.ts
Line: 57-67

Comment:
**Test now asserts the removed (buggy) behavior**

This test sets `isDm: false` (no `m.direct` entry) and expects `isDirectMessage` to return `true` purely because the room has two members. That is exactly the unconditional fallback that this PR removes. After the code change this test will fail, so it needs to be updated to expect `false`:

```suggestion
  it("does not classify 2-member rooms as DMs when direct metadata is missing", async () => {
    const client = createMockClient({ isDm: false });
    const tracker = createDirectRoomTracker(client);
    await expect(
      tracker.isDirectMessage({
        roomId: "!room:example.org",
        senderId: "@alice:example.org",
      }),
    ).resolves.toBe(false);
    expect(client.getJoinedRoomMembers).toHaveBeenCalledWith("!room:example.org");
  });
```

How can I resolve this? If you propose a fix, please make it concise.

---

This is a comment left during a code review.
Path: extensions/matrix/src/matrix/monitor/direct.test.ts
Line: 122-130

Comment:
**Test will fail — `isDm` defaults to `false` here**

`createMockClient({})` passes no `isDm` argument, so `params.isDm === true` evaluates to `false`, meaning `client.dms.isDm` always returns `false`. The test then expects `true`, which relied on the unconditional 2-member fallback that was just removed. This test will fail and should be either deleted (it tested the removed behavior) or rewritten to use `isDm: true` if the intent is to verify the `m.direct` + strict-membership path:

```suggestion
  it("still recognizes exact 2-member rooms when m.direct and member state agree", async () => {
    const tracker = createDirectRoomTracker(createMockClient({ isDm: true }));
    await expect(
      tracker.isDirectMessage({
        roomId: "!room:example.org",
        senderId: "@alice:example.org",
      }),
    ).resolves.toBe(true);
  });
```

How can I resolve this? If you propose a fix, please make it concise.