feat(markdown): apply active theme syntax palette to code blocks

tests/test_markdown_render_robust.py

@@ -54,3 +54,28 @@ def test_duplicate_table_content_both_get_replaced():
   full = "".join(str(c) for c in mock_md.render.call_args_list)
   assert "| A | B |" not in full, f"Raw table text leaked on duplicate: {full!r}"
 
+
+def test_render_applies_current_syntax_palette(monkeypatch):
+    """When a theme is active, the render path should call apply_syntax_palette
+    so new code-block editors pick up the theme's syntax palette."""
+    from unittest.mock import patch
+    from src import theme_2 as theme
+
+    class _Tracker:
+        last_palette = None
+        last_call = False
+
+    def fake_apply(palette_id):
+        _Tracker.last_palette = palette_id
+        _Tracker.last_call = True
+
+    monkeypatch.setattr(theme, "apply_syntax_palette", fake_apply)
+    monkeypatch.setattr(theme, "_current_palette", "solarized_dark")
+    monkeypatch.setattr(theme, "get_syntax_palette_for_theme", lambda n: "dark")
+
+    from src.markdown_helper import MarkdownRenderer
+    with patch("src.markdown_helper.imgui_md") as mock_md, patch("src.markdown_helper.imgui") as mock_imgui, patch("src.markdown_table.imgui") as mock_table_imgui:
+        _mock_table_calls(mock_table_imgui)
+        MarkdownRenderer().render("hello world", context_id="p")
+        assert _Tracker.last_call, "expected apply_syntax_palette to be called"
+