Backpack v1.6.3

The panel gets a clear-out. The header carried six facts nobody reads twice,
the tile row carried eight figures to answer four questions, and the menu would
not close. All of that is smaller now, the accent colour is yours to pick, and
the panel can serve itself over HTTPS.

Fixed

• A server card never showed its own tunnel port. The field was declared,
  documented, and never once assigned, so every card printed a dash where the
  port belongs — the one number on a card that cannot be found anywhere else on
  the page.
• The menu would not close when you clicked away from it. Its backdrop asked
  to cover the viewport and covered only the header, because the header carries
  a backdrop-filter and a filtered element becomes the containing block for
  anything positioned against the viewport inside it. Nothing about the CSS
  looked wrong. The menu and its backdrop live outside the header now, which
  also fixes the full-width sheet on phones — mispositioned by the same trap,
  and not previously noticed.
• A connection limit leaked a slot on every timeout. A forwarded connection
  that waited more than three seconds to be paired was closed without releasing
  the slot it took on accept; only the handler frees that, and the handler never
  runs for a connection that timed out. Tunnels with max_connections set would
  fill up permanently. Tunnels with no limit were never affected.

Added

• Pick the accent colour. Six of them — Ember (the CLI's own, and the
  default), Pomegranate, Saffron, Pistachio, Turquoise and Frost — in Settings
  beside Language. Every coloured thing in the panel derives from one variable,
  so a theme is that variable and nothing else, and the login screen follows the
  same choice: it is the first thing anyone sees, and a sign-in page in a colour
  the panel does not use reads as a different product.
• HTTPS for the web panel, under Web Panel → Certificate in the CLI. A
  self-signed certificate works anywhere, including on the bare IP most of these
  panels live on, and the browser warns once. With a domain that resolves here
  and port 80 reachable, Let's Encrypt issues one browsers trust and renews it
  on its own — the certificate is resolved per handshake, so a reissue lands
  without restarting the panel. Off by default, and it stays off on upgrade:
  turning it on changes the address people have bookmarked, so it is a
  deliberate act rather than something an update does to you.
• GitHub, with its star count, in the menu. Fetched by the browser so it
  works from a panel on a server with no internet of its own, cached for six
  hours because GitHub allows sixty anonymous requests an hour, and simply left
  off when it cannot be had.
• A prompt asking for a star, shown at most once every three days, never on a
  first visit, and never again after either answer. This panel also carries the
  alerts, and anything that teaches people to dismiss it without reading costs
  more than a star is worth.

Changed

• The header carries the brand and the way in, and nothing else. Uptime,
  the addresses, OS, location and ISP all moved into the menu: they are read
  when a server is set up and then almost never again, which does not earn a
  permanent strip across the top of every screen.
• The tile row went from eight to four: download, upload, one total, and the
  running version. In and out were two tiles answering half a question each —
  "how much has this machine moved" is the question, so it is one figure now.
  Load and the tunnel count were already on screen elsewhere, and the congestion
  algorithm is a setup detail, so it joined the rest of the machine's facts in
  the menu.
• A tunnel's status is a ring around its whole card, drawn inside the edge,
  instead of a bar down one side. The same three pixels, now describing the card
  they belong to, breathing on the status dot's rhythm — identical duration and
  identical keyframes, so the two read as one signal rather than two things
  blinking near each other.
• Traffic on a card is one line — ↓ 203.5 GiB ↑ 13.0 GiB Σ 216.6 GiB —
  with the glyphs quiet and the figures bright. Dropping the label and the
  pairing slash bought the total, which is what most people were adding up in
  their head.
• Support Backpack left the menu. The heart button already floats in the corner
  of every screen, and asking twice is not asking better.

Notes

No config, wire protocol, or tunnel behaviour changes. Updating replaces the
binary.