Pull a break's edges back off the programme

Subtraction answers "not in the master", which is a superset of "advertising".
Across the eighteen episodes holding a master the candidates come to a mean of
exactly 100% of what the length gap implies, and individually overshoot by up to
10%. Reading their edges showed two causes.

The first is the programme leaking in. Darknet Diaries' "NSL" opened a break on
"I'm Jack Resider." and closed one on "So Nick and ACLU, we're going to
challenge"; Incels opened two on "let's stop here for a...". Those lines failed
to anchor only because recognition dented a word near them, and skipping them is
the harm this whole thing exists to prevent. Their words are in the master, so
they can be found there and given back.

The second is whisper's own "[MUSIC PLAYING]" and "(upbeat music)" and a title
card. Those are genuinely absent from a publisher's written transcript, so
nothing here can tell them from an advertisement. Left alone: they sit against
the break anyway, and a rule invented to catch them would be a guess.

**Measured in both directions**, which is the lesson MinRunSamples taught:

    Worship at the Feet of a Coward   108% -> 100%
    the 764 Network                   104% -> 100%
    The Manosphere                    104% -> 101%
    I hit you because I love you      104% -> 101%
    Gobi                              107% -> 104%
    From Victim to Violence            86% ->  78%
    Behind the Scenes                  75% ->  73%

The three that got worse were already the worst, and not because of this: each
finds three pods where its show's others find four, so it is missing a whole
break. The trim removes edge text from the pods they did find, before and after
alike. Mean 100% -> 98%, and the top of the range is where it should be.

Four words, five and six all measured. Five and six are identical and four
differs by one point on one episode, which is noise at this sample size. Four is
kept because it is the only one that still recognises a short line with a
mistake in the middle -- an eight-word line with a dented fifth word has no
clean five-word run, and "So Nick and ACLU, we're going to challenge" is eight
words. Trimming more also errs towards smaller candidates, which is the safe
direction here.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018AwnALZL6bD4VBtATDVv3B

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