Embed shared CSS/JS inline instead of file serving

Gradio file serving doesn't work reliably with Docker SDK.
Read chat-ui.css and chat-ui.js at startup and inject inline.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app.py

@@ -220,6 +220,10 @@ def stream_question(
 # Gradio app
 # ---------------------------------------------------------------------------
 
+_STATIC_DIR = Path(__file__).parent / "static"
+_CHAT_UI_CSS = (_STATIC_DIR / "chat-ui.css").read_text() if (_STATIC_DIR / "chat-ui.css").exists() else ""
+_CHAT_UI_JS = (_STATIC_DIR / "chat-ui.js").read_text() if (_STATIC_DIR / "chat-ui.js").exists() else ""
+
 CUSTOM_HTML = """
 <div id="explorer-app">
     <div id="setup-panel">
@@ -249,8 +253,8 @@ CUSTOM_HTML = """
     </div>
 </div>
 
-<link rel="stylesheet" href="/file=static/chat-ui.css" />
-<script src="/file=static/chat-ui.js"></script>
+<style>""" + _CHAT_UI_CSS + """</style>
+<script>""" + _CHAT_UI_JS + """</script>
 <style>
     #explorer-app { font-family: var(--font-family, 'Inter', system-ui, sans-serif); max-width: 800px; margin: 0 auto; }
     #setup-panel { padding: 24px 0; }
@@ -576,4 +580,4 @@ if __name__ == "__main__":
         print("WARNING: LH_ACCESS_TOKEN not set — app is unprotected")
 
     app = build_app()
-    app.launch(server_name="0.0.0.0", server_port=7860, allowed_paths=["static"])
+    app.launch(server_name="0.0.0.0", server_port=7860)