updaterNewerVersionByProbe guarded on updaterTagExists being defined
and gave up when it was not. That function lives in the ladder, and a
cross-file function is not reliably loaded in the generator's context —
updaterAppPolicy a few lines below already carries an explicit source
fallback for exactly this. Without one the probe silently did nothing,
which is the failure mode it was added to remove.
Source the ladder when the function is absent, matching the existing
idiom. Verified by calling the probe with updaterTagExists undefined:
it now loads the ladder and returns v1.159.0 for matrixdotorg/synapse
instead of an empty string.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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