feat(bonfire): SSU widgets on charm v2 behind the Output interface

- Spinner, gradient progress bar and the multi-row process view ported
  from SSU to bubbletea v2 (input off, no signal handler, command
  context); boxed tables through lipgloss/table
- Prompts use huh fields and a single-select port of SSU's selector with
  its confirmation screen on an interactive terminal; line prompts off a
  terminal and under --no-ansi are unchanged (piped passwords still work)
- -q hides decoration but keeps data and errors; -n returns defaults and
  Secret fails with a hint on a terminal stdin; --no-ansi and non-TTY
  runs print today's plain lines
- Helpers: GlobalsOf, VerbosityOf, IsQuiet, Interactive, ConfirmProceed,
  Process, Current, Failed, PrintAbove, ItemProgress, ErrAborted
- diary's styled console lines print above a running live view

docs/services/logging.md

@@ -24,6 +24,8 @@ A channel is a named destination with a driver:
 
 Each channel may set its own `level`; a record reaches a channel when it passes both its component's level and the channel's level.
 
+While a command shows a live view on the terminal (a spinner, a progress bar or the process view of `bonfire.Process`), styled console lines print above the view through `bonfire.PrintAbove` instead of being written into it, so log records from workers and other goroutines never tear the animation. Without a live view, and on channels that are not styled, lines are written directly as usual.
+
 ## config/log.yaml
 
 `summer new` writes this file, and an application without it gets the same values as framework defaults: