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Add score indicator to threads using the (replies/words) metric.
当前为
Formula: ncdf(zscore(log1p(replies) / log1p(words)))
Uses a self-calibrating moving-window algorithm with N=1500.
Learns the mean and variance on each site to ensures a [0, 100] score spread.
Also remembers the last 300 threadIds (~10 pages) to prevent recounting them too often as you browse/reload.
The scores can move around a bit at first while you browse.

Options:
-set CORNER_TOP=false to put indicator in bottom corner (MOBILE ONLY).
-set CORNER_INDICATOR=false for text only scores.