Cody v0.48.0

Release 0.48.0

Port forwarding from a tablet, and a calmer Devices panel.

• adb forward and adb reverse work from the browser, through Cody's server.
  Forward listens on the Cody machine's loopback and tunnels each connection
  to the device; reverse lets the device reach a service on the Cody machine.
  Each rule is a confirmed operation with bounded quotas and credit-based flow
  control, and it is torn down on cancel, unplug, a lost relay or page
  replacement. Port rules, shells, pulls and terminals share one ADB
  connection and lease.
• The Devices panel is reorganised as connect -> device -> that mode's
  actions: one "Add a device" card, one card per device with its mode
  (ADB, recovery, sideload, fastboot, DFU, serial, ESP, Bluetooth) and tabs
  for only the actions that mode supports. Touch targets are 44 px or more,
  laid out for tablet portrait and landscape. Every existing action stays
  reachable; protocol and confirmation logic are unchanged.
• docs/hardware-parity.md lists every adb, fastboot, esptool, dfu-util and
  mtkclient command with the Cody action and the test that exercises it.
  MediaTek preloader/BROM support is not implemented yet.
• docs/release.md records the v0.47.0 release-job runner fault and its
  recovery.

Full Changelog: v0.47.0...v0.48.0