v0.4.9

One design, two clients

The browser client and the desktop app are drawn from the same palette now. A
shell in a tab and a shell in the native window say the same things in the same
words, with the same colours, at the same sizes: one accent for what is chosen
or in control, amber for read-only, red for gone, grey for exited.

• The desktop app's palette moves off its violet onto the teal the browser
  client uses, and its terminal takes the same sixteen ANSI colours, so a shell
  belongs to the window around it rather than looking like a program that
  wandered in. The header band is 44px and the status line 30px, the heights the
  browser client uses, and the status line states the connection as a chip — a
  dot in a wash — the way the browser does.
• A shell in the sidebar carries its state as a badge — 控制中, 只读, 已退出 —
  with the holder's name beside it, and the row's tooltip carries the numbers
  the row has no room for. The empty window says what the machine it would open
  a shell on is doing, rather than showing an empty rectangle.
• The browser client is redrawn on the same system: a cold near-black ground
  with hairlines instead of borders, a sidebar whose rows are one badge and one
  number, tabs whose underline is their state, and a right-hand session
  inspector holding what the daemon said about the shell on screen. A dark and a
  light appearance are both complete, and the choice is remembered per device.
• The composer gained a strip of the commands this tab has sent — real history,
  newest first, one tap back into the box — and says on the same line what the
  Enter key will do. The relay's connect screen names the app, says why it is
  asking, and reports an empty token next to the field instead of doing nothing.
• The phone layout is a drawer and a bigger key bar rather than a second design,
  with touch targets at 44px and the terminal kept whole.

Fixed

• The browser client's empty state kept a stale line about a previous machine
  after the roster changed, and said nothing at all once the machine had
  sessions to show.