Steps were identified by their own sentences, so 'which one failed' meant reading
prose, and rewording a step silently made it a different step with no history.
Each now carries a stable code: R for raising the mesh, P for it being able to
produce, U for something being used on it, V for verifying what it says about
itself, E for enduring — a change following on its own, and coming back after the
machine stops.
The plan is data, printed before anything is attempted, so a reader knows what
the run intends to establish rather than inferring it from what happens to be
printed. The run ends with a table and a JSON report, and distinguishes SKIP from
FAIL: a step whose dependency failed was never asked, which is not the same as a
step that was asked and said no.
Claude-Session: https://claude.ai/code/session_01D6qtiYU3P9jk3pnAXyAFyx
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