feat(ui): Integrate imgui_markdown and professional fonts for rich text rendering

src/markdown_helper.py

@@ -0,0 +1,56 @@
+# src/markdown_helper.py
+from __future__ import annotations
+from imgui_bundle import imgui_md, imgui, immapp
+import webbrowser
+import os
+from typing import Optional
+
+class MarkdownRenderer:
+ """
+    Wrapper for imgui_md to manage styling, callbacks, and specialized rendering
+    (like syntax highlighting integration).
+    """
+ def __init__(self):
+  self.options = imgui_md.MarkdownOptions()
+  # Use Inter as the base font for Markdown (matches professional theme)
+  # It expects fonts like Inter-Regular.ttf, Inter-Bold.ttf, etc. in the assets folder
+  self.options.font_options.font_base_path = "fonts/Inter"
+  self.options.font_options.regular_size = 16.0
+  
+  # Configure callbacks
+  self.options.callbacks.on_open_link = self._on_open_link
+  
+  # Note: Syntax highlighting will be integrated in Phase 2
+
+ def _on_open_link(self, url: str) -> None:
+  """Handle link clicks in Markdown."""
+  # If it's a URL, open in browser
+  if url.startswith("http"):
+   webbrowser.open(url)
+  else:
+   # Handle local files or internal links
+   # For now, just print. Could integrate with app_controller in Phase 4.
+   print(f"Clicked local link: {url}")
+
+ def render(self, text: str) -> None:
+  """Render Markdown text using imgui_md."""
+  imgui_md.render(text)
+
+ def render_unindented(self, text: str) -> None:
+  """Render Markdown text with automatic unindentation."""
+  imgui_md.render_unindented(text)
+
+# Global instance for easy access
+_renderer: Optional[MarkdownRenderer] = None
+
+def get_renderer() -> MarkdownRenderer:
+ global _renderer
+ if _renderer is None:
+  _renderer = MarkdownRenderer()
+ return _renderer
+
+def render(text: str) -> None:
+ get_renderer().render(text)
+
+def render_unindented(text: str) -> None:
+ get_renderer().render_unindented(text)