refine: Make writing-great-skills hunt no-ops at the sentence level

Add a Pruning directive to run the no-op test sentence by sentence and
delete whole failing sentences rather than trim words. References the
existing no-op test as single source of truth — no restated definition.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Matt Pocock 2026-06-17 14:33:42 +01:00
commit aa7ed40cbe

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@ -48,6 +48,8 @@ Keep each meaning in a **single source of truth**: one authoritative place, so c
Check every line for **relevance**: does it still bear on what the skill does?
Then hunt **no-ops** sentence by sentence, not just line by line: run the no-op test on each sentence in isolation, and when one fails, delete the whole sentence rather than trim words from it. Be aggressive — most prose that fails should go, not be rewritten.
## Leading words
A **leading word** is a compact concept already living in the model's pretraining that the agent thinks with while running the skill (e.g. _lesson_, _fog of war_, _tracer bullets_). Repeated throughout the text (though not necessarily - a strong leading word might only be needed once), it accumulates a distributed definition and anchors a whole region of behaviour in the fewest tokens, by recruiting priors the model already holds.