shell.online v0.7.1

Shared terminals now keep one immutable 80x24 PTY grid. Desktop, mobile, read-only, and locally attached viewers fit that same grid independently, so joining or taking control on one device no longer deforms another device's TUI.

Legacy browser and attach resize requests remain accepted as compatibility no-ops. Personal browser zoom, touch scrolling, mobile keyboard handling, E2EE defaults, and collaboration behavior are preserved.

All binaries and install metadata are covered by SHA256SUMS.