Add a `fit()` method to the Container class that invokes the xterm.js fit addon to resize the terminal to its parent element. In the app template, introduce a `toggleDevelopmentMode()` function that hides the header, repositions the sidebar to a fixed 10% width on the left, allocates 40% width to both the terminal and chat area side by side, calls `container.fit()` for proper terminal sizing, and renders a "H4x0r 1337" word on the star field. Also refactor the `/container` command in web.html to remove redundant container initialization logic, leaving only a placeholder comment for the dialog open call.