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_gui_text_viewer_docking.py

@@ -0,0 +1,54 @@
+import pytest
+from unittest.mock import patch, MagicMock
+from src.gui_2 import render_text_viewer_window
+
+def test_text_viewer_window_id_stability():
+ # Setup a mock app with necessary state
+ app = MagicMock()
+ app.show_windows = {"Text Viewer": True}
+ app.text_viewer_title = "Custom Title"
+ app.text_viewer_content = "Some content"
+ app.text_viewer_type = "text"
+ app.ui_editing_slices_file = None
+ 
+ # Patch all dependencies
+ with patch('src.gui_2.imgui') as mock_imgui, \
+      patch('src.gui_2.markdown_helper') as mock_md, \
+      patch('src.gui_2.imscope') as mock_scope:
+  
+  # Setup mock returns
+  mock_imgui.begin.return_value = (True, True)
+  mock_imgui.checkbox.return_value = (False, True)
+  
+  render_text_viewer_window(app)
+  
+  # Verify imgui.begin was called with the stable ID suffix
+  args, _ = mock_imgui.begin.call_args
+  window_title = args[0]
+  assert "###Text_Viewer_Stable" in window_title
+  assert window_title.startswith("Custom Title")
+
+def test_text_viewer_window_default_title_id_stability():
+ # Setup a mock app with default title (None)
+ app = MagicMock()
+ app.show_windows = {"Text Viewer": True}
+ app.text_viewer_title = None
+ app.text_viewer_content = "Some content"
+ app.text_viewer_type = "text"
+ app.ui_editing_slices_file = None
+ 
+ with patch('src.gui_2.imgui') as mock_imgui, \
+      patch('src.gui_2.markdown_helper') as mock_md, \
+      patch('src.gui_2.imscope') as mock_scope:
+  
+  # Setup mock returns
+  mock_imgui.begin.return_value = (True, True)
+  mock_imgui.checkbox.return_value = (False, True)
+  
+  render_text_viewer_window(app)
+  
+  # Verify imgui.begin was called with the stable ID suffix
+  args, _ = mock_imgui.begin.call_args
+  window_title = args[0]
+  assert "###Text_Viewer_Stable" in window_title
+  assert window_title.startswith("Text Viewer")