Extends the JFK thread-count sweep to print four labelled panels
(AC+CPU, AC+GPU, battery+CPU, battery+GPU) driven by
MAGNOTIA_POWER_STATE_OVERRIDE. Each panel shows the helper's
predicted thread count for its (power, gpu) combination alongside
the empirical RTF table for n_threads = [1, 2, 4, physical, logical,
maybe 8].
The actual whisper context is initialised once (Vulkan if compiled
in and resolvable, CPU otherwise), so the RTF rows themselves are
produced by the same backend across panels. The CPU vs GPU axis
controls only the helper-pick column, which is the empirical
question we want answered: is the LLM=2 / Whisper=4 GPU floor right?
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
a58c2f0994