Fix CORS and file serving for dashboard

- Added allowed_paths to Gradio launch for proper file serving
- Updated dashboard to handle Gradio file serving format
- Added HTML detection to avoid JSON parse errors
- Prioritized Gradio's file= URL format

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

app.py

@@ -1229,5 +1229,13 @@ with gr.Blocks(css=custom_css, theme="soft", title="Trek Asistanı", head=storag
 
 # API will be handled separately in production
 
+# Make conversations.json accessible via Gradio file serving
+# The file will be accessible at: https://samikoen-bf.hf.space/file=conversations.json
+# But we need to ensure it's served with proper content type
+
 if __name__ == "__main__":
-    demo.launch(debug=True)
+    # Launch with allowed paths for file serving
+    demo.launch(
+        debug=True,
+        allowed_paths=["conversations.json", "public/conversations.json"]
+    )