build-packlisted

# Building a pack A pack is a sealed, signed YantrikDB file a model mounts to gain knowledge and behaviour it lacks, and unmounts without a trace. This skill covers authoring one that is *worth shipping* — which is decided by measurement, not by how good the corpus looks. ## The one thing to get right first **A pack shifts knowledge and procedure. It does not raise raw capability.** Every claim must be phrased so it can be checked: - ✗ "makes your model write like Shakespeare" - ✓ "raises compliance with Shakespearean craft rules from 7/12 to 10/12 on qwen3.5:4b, on checks written down before the run" If you cannot state the claim as a measured delta on named checks, you do not yet know whether the pack works. ## Which of the four shapes is this? Measured across three model sizes; the shape predicts the payoff and the buyer. | Shape | Example | Typical lift | Who buys it | |---|---|---|---| | **Knowledge** the model cannot have | private codebase, post-cutoff API | huge (1/20 → 18/20) | anyone running a local model | | **Method** it knows but doesn't apply | reasoning discipline, review procedure | large at *every* size (+5 to +8) | everyone — the most underserved shape | | **Framework** house rules | React, WordPress conventions | moderate; ceiling is high already | small-model operators | | **Style** craft rules | period voice, brand tone | real but smallest | small-model operators | Two findings worth carrying: **method packs lift even a 27B**, because models kn