fix(bonfire): end a live view when its context is cancelled and print later lines plainly (WR-09)

docs/console/writing-commands.md

@@ -74,7 +74,7 @@ Print the data your command exists to produce (a token, a key, JSON) with `bonfi
 
 Before a destructive step, ask with `bonfire.ConfirmProceed`. It asks only on an interactive terminal; off a terminal, with `-n` or `-q`, and when the scheduler calls the command, it returns true without asking, so deploys over SSH never wait for an answer.
 
-For a loop over many items, `bonfire.Process` runs a function per item and shows SSU's process view on a terminal, one row per item with its state, or prints one `✓ item` or `✗ item: error` line per item elsewhere; it returns the failures joined. Inside `bonfire.Output.Progress`, `bonfire.Current` names the item being worked on and `bonfire.Failed` records a failed one. Log lines and output printed while a live view runs appear above the view (`bonfire.PrintAbove`).
+For a loop over many items, `bonfire.Process` runs a function per item and shows SSU's process view on a terminal, one row per item with its state, or prints one `✓ item` or `✗ item: error` line per item elsewhere; it returns the failures joined. Inside `bonfire.Output.Progress`, `bonfire.Current` names the item being worked on and `bonfire.Failed` records a failed one. Log lines and output printed while a live view runs appear above the view (`bonfire.PrintAbove`). When the context given to `bonfire.Process` is cancelled, the view ends with its last frame and later lines print plainly below it.
 
 Return an error from `Run` to fail the command. The binary prints it as an error block on stderr and exits with status 1; see [Errors and hints](#errors-and-hints).