[SteelCrab]

Summary

• On narrow screens (<640px), zoom and pan so a terminal fits the screen width below the toolbar, both on joining a session and when creating a terminal.
• On touch devices, show an extra-keys bar (Ctrl, Esc, Tab, arrows) while a terminal is focused. Ctrl is a one-shot sticky modifier; keys keep terminal focus so the on-screen keyboard stays open, and the bar follows the visual viewport above the keyboard.
• Move the connection status and user list below the toolbar on narrow screens so they are not covered.

Screenshots

Before	After

• npm run lint, npm run build
• iPhone viewport with touch emulation: terminal fits the width, typing reaches the shell, Ctrl → c interrupts sleep, arrow keys work
• Desktop viewport: unchanged behavior, no touch keys

Note: in Chrome DevTools device mode, set the emulated DPR equal to the display's real DPR; otherwise xterm's WebGL canvas (sized via device-pixel-content-box) renders magnified. This is an emulation artifact, not a real-device issue.