Mercury 3.1.0

Mercury 3.1.0 focuses on widget stability, cleaner notebook files, better chat behavior, and smoother Docker deployments.

Highlights

• Cleaner .ipynb files
  Mercury no longer stores unnecessary widget ESM/CSS/runtime information directly in notebooks. Notebook files are treated more like application source code, keeping them cleaner and easier to version control. (#537)

• Improved Docker deployments
  Fixed issues where widgets were rendered as plain string representations after Docker deployment. (#533)
  Also fixed Docker-related "File Save Error" and "Shadow Notebook not found" messages. (#532)

• Better widget behavior inside layouts
  Buttons placed inside Columns now work correctly and trigger cell re-execution as expected. (#519)

• More control over append-style widgets
  Widgets with append behavior, such as Columns, now support controlling whether new content is appended or previous content is cleared, for example with an append argument. (#536)

Widgets

• Added an option to create an Expander without border and header background. (#517)
• Improved MultiSelect behavior: removing an item from a chip no longer opens the dropdown list. (#538)
• Improved Table widget configuration with options for setting height and controlling whether the table is displayed immediately after construction. (#510)
• Fixed Table widget UID handling after recent changes in WidgetsManager. (#509)

Chat

• Added a stop button to ChatInput while the app is generating a response. (#516)
• Improved chat scrolling when assistant messages are updated incrementally, such as during streaming responses. (#514)

Documentation and demos

• Added an option to open live demo applications from the documentation iframe in a separate tab / full-screen view. (#513)

Fixes

• Fixed widget rendering in Docker.
• Fixed Docker notebook save/shadow notebook errors.
• Fixed buttons inside Columns.
• Fixed Table widget UID handling.
• Fixed MultiSelect chip removal behavior.
• Fixed chat auto-scroll when appending streamed message content.