fix(gui): Force newline in discussion entries to prevent squashed layout

- Insert imgui.new_line() before rendering discussion content.
- Ensures the Markdown renderer inherits the full horizontal width of the panel.
- Definitively fixes vertical squashing of tables and long text blocks.

tests/test_imgui_scopes_id_stability.py

@@ -0,0 +1,29 @@
+import pytest
+from unittest.mock import patch, MagicMock
+from src.imgui_scopes import _ScopeId
+import src.imgui_scopes as imgui_scopes
+
+def test_scope_id_string():
+ with patch('src.imgui_scopes.imgui') as mock_imgui:
+  sid = _ScopeId("test_id")
+  with sid:
+   pass
+  mock_imgui.push_id.assert_called_once_with("test_id")
+  mock_imgui.pop_id.assert_called_once()
+
+def test_scope_id_int():
+ with patch('src.imgui_scopes.imgui') as mock_imgui:
+  # Python type hint is str, but we test runtime resilience
+  sid = _ScopeId(1234)
+  with sid:
+   pass
+  # Verify it was converted to string to prevent low-level crashes
+  mock_imgui.push_id.assert_called_once_with("1234")
+  mock_imgui.pop_id.assert_called_once()
+
+def test_id_helper_function():
+ with patch('src.imgui_scopes.imgui') as mock_imgui:
+  with imgui_scopes.id(42):
+   pass
+  mock_imgui.push_id.assert_called_once_with("42")
+  mock_imgui.pop_id.assert_called_once()