_run() receives the parsed arguments as its args parameter, but then
checks the private __args attribute for the func attribute and resolves
the command function through the args property. Both refer to the same
object today, so the mixing is harmless, but it obscures the data flow
and would silently diverge if a caller ever passed a namespace other
than the stored one.
Use the args parameter consistently in _run().
Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.84.2
Signed-off-by: Jan Lindemann <jan@janware.com>