fix channel members tool, add debug commands

vibe_bot/tests/test_tools.py

@@ -24,7 +24,7 @@ def test_get_channel_members_impl_returns_formatted_list() -> None:
     mock_member2.status = MagicMock(value="idle")
 
     mock_channel = MagicMock()
-    mock_channel.members = [mock_member1, mock_member2]
+    mock_channel.guild.members = [mock_member1, mock_member2]
 
     result = get_channel_members_impl(mock_channel)
 
@@ -38,7 +38,7 @@ def test_get_channel_members_impl_returns_formatted_list() -> None:
 def test_get_channel_members_impl_empty() -> None:
     """Test get_channel_members_impl with no members."""
     mock_channel = MagicMock()
-    mock_channel.members = []
+    mock_channel.guild.members = []
 
     result = get_channel_members_impl(mock_channel)
 
@@ -55,7 +55,7 @@ def test_get_channel_members_impl_with_global_name() -> None:
     mock_member.status = MagicMock(value="dnd")
 
     mock_channel = MagicMock()
-    mock_channel.members = [mock_member]
+    mock_channel.guild.members = [mock_member]
 
     result = get_channel_members_impl(mock_channel)
 
@@ -72,7 +72,7 @@ def test_get_channel_members_impl_no_status() -> None:
     mock_member.status = None
 
     mock_channel = MagicMock()
-    mock_channel.members = [mock_member]
+    mock_channel.guild.members = [mock_member]
 
     result = get_channel_members_impl(mock_channel)
 
@@ -83,8 +83,7 @@ def test_get_channel_members_impl_no_status() -> None:
 def test_get_channel_members_impl_exception() -> None:
     """Test get_channel_members_impl handles exceptions gracefully."""
     mock_channel = MagicMock()
-    mock_channel.members = None
-    type(mock_channel).members = property(
+    type(mock_channel.guild).members = property(
         lambda self: (_ for _ in ()).throw(Exception("test"))
     )
 
@@ -119,7 +118,7 @@ def test_get_channel_members_impl_sorted_by_display_name() -> None:
     mock_member_a.status = MagicMock(value="online")
 
     mock_channel = MagicMock()
-    mock_channel.members = [mock_member_z, mock_member_a]
+    mock_channel.guild.members = [mock_member_z, mock_member_a]
 
     result = get_channel_members_impl(mock_channel)
 
@@ -138,7 +137,7 @@ def test_get_channel_members_impl_no_nick_when_same_as_display() -> None:
     mock_member.status = MagicMock(value="online")
 
     mock_channel = MagicMock()
-    mock_channel.members = [mock_member]
+    mock_channel.guild.members = [mock_member]
 
     result = get_channel_members_impl(mock_channel)
 
@@ -179,3 +178,23 @@ def test_format_member_with_all_fields() -> None:
     assert "(nickname: Al)" in result
     assert "(global name: Alice Global)" in result
     assert "[online]" in result
+
+
+def test_get_channel_members_impl_no_guild() -> None:
+    """Test get_channel_members_impl when channel has no guild (e.g. DM)."""
+    mock_channel = MagicMock()
+    mock_channel.guild = None
+
+    result = get_channel_members_impl(mock_channel)
+
+    assert "No members found in this channel." in result
+
+
+def test_get_channel_members_impl_guild_members_none() -> None:
+    """Test get_channel_members_impl when guild.members is None."""
+    mock_channel = MagicMock()
+    mock_channel.guild.members = None
+
+    result = get_channel_members_impl(mock_channel)
+
+    assert "No members found in this channel." in result