Dataset re-processing reads a stored HDF5 file, so it is unavailable for
the live HTTP stream. Disable the "Analyze dataset" hero button while a
source is connected (with an explanatory tooltip) instead of letting the
user click through to a "open a file first" dialog afterwards.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
leonarski_fandClaude Opus 4.8
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