1@README.md
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3- **Capture BEFORE changing anything.** A fixture taken after a fix is a
4  picture of the fix, not of the defect, and the difference is the whole
5  point of keeping it.
6- A fixture is never loaded by a test. Deserializing a game type (the old
7  `alttp::Scene`, today's `alttp::State`) would mean deriving `Deserialize`
8  on a type that has no other reason to want it,
9  and the test would then be a test of the serializer. Reconstruct the
10  situation in the crate's own terms and cite the fixture in the test's doc
11  comment, which is what `the_live_stall` did (in `packages/brain`, deleted
12  2026-09-21).
13- Keep them small: the few decisions around the moment, not the whole
14  history. The old brain's `decisions` tool returned a quarter of a
15  megabyte; today's `jev_history` and `bot` tools are the ones to capture
16  from.
17- Say in the table WHAT WAS WRONG, not only what was captured. A fixture with
18  no verdict beside it is a file nobody will ever dare delete.