feat: add CLI Apps settings MVP

tests/channels/test_websocket_envelope_media.py

@@ -105,6 +105,43 @@ async def test_message_without_media_backward_compatible() -> None:
     assert call.kwargs["media"] is None
 
 
+@pytest.mark.asyncio
+async def test_message_forwards_normalized_cli_app_attachments() -> None:
+    channel = _make_channel()
+    mock_conn = AsyncMock()
+    envelope = {
+        "type": "message",
+        "chat_id": "abc123",
+        "content": "please use @drawio",
+        "webui": True,
+        "cli_apps": [
+            {
+                "name": "DrawIO",
+                "display_name": "Draw.io",
+                "category": "diagram",
+                "entry_point": "cli-anything-drawio",
+                "logo_url": "https://example.invalid/drawio.svg",
+                "brand_color": "#F08705",
+            },
+            {"name": "bad name", "entry_point": "nope"},
+        ],
+    }
+
+    await channel._dispatch_envelope(mock_conn, "client-1", envelope)
+
+    channel._handle_message.assert_awaited_once()
+    metadata = channel._handle_message.call_args.kwargs["metadata"]
+    assert metadata["webui"] is True
+    assert metadata["cli_apps"] == [{
+        "name": "drawio",
+        "display_name": "Draw.io",
+        "category": "diagram",
+        "entry_point": "cli-anything-drawio",
+        "logo_url": "https://example.invalid/drawio.svg",
+        "brand_color": "#F08705",
+    }]
+
+
 @pytest.mark.asyncio
 async def test_message_with_single_image_forwards_saved_path(tmp_path) -> None:
     channel = _make_channel()