Step 6 evaluated: infinity (never completes) to 24.1s measured
snackbar-to-snackbar, with the measured after-bar charted in step 6 (the
step-1 chart stays potential-only, per the format). Documents the second
localization loop the verification runs forced on the push half: UI death
by shared heap fate, odb cache exonerated, telemetry axis bug, mmaps named
as the eater, the impossible fixed-maps budget, the keep-alive race, and
pack layout as a device-performance variable.
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