Test b313751acf fix(display): show spinners and tool progress during streaming mode ...

When streaming was enabled, two visual feedback mechanisms were
completely suppressed:

1. The thinking spinner (TUI toolbar) was skipped because the entire
   spinner block was gated on 'not self._has_stream_consumers()'.
   Now the thinking_callback fires in streaming mode too — the
   raw KawaiiSpinner is still skipped (would conflict with streamed
   tokens) but the TUI toolbar widget works fine alongside streaming.

2. Tool progress lines (the ┊ feed) were invisible because _vprint
   was blanket-suppressed when stream consumers existed. But during
   tool execution, no tokens are actively streaming, so printing is
   safe. Added an _executing_tools flag that _vprint respects to
   allow output during tool execution even with stream consumers
   registered.

2026-03-20 05:14:42 -07:00

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