The story in one minute
Last night we finished a controlled experiment: two teams of AI builders, same twelve-step feature, handing work forward like a relay. The team whose briefings we expected to win — machine-rendered, structured, "smarter" — shipped more surviving defects, not fewer. The autopsy found why: its builders left behind confident statements — "this is tested," "this is wired in," "this can't run twice" — and nothing ever checked those statements against the code. The purest specimen: a safety test that existed, passed, and was connected to nothing, while the record said "gated."
This milestone makes that sentence impossible to write. Every claim a builder leaves behind carries a check the system can re-run — and a claim without one is displayed as unverified, everywhere, always.
What I decided (each one annotatable)
Three courts, no fourth. Every claim binds one way: a command receipt (a check that re-runs red/green), a reach receipt (structural proof from the code graph — "this test is actually executed," "only this module writes this store"), or an honest judged label (a human call, shown as a human call).
Unbound renders fenced. A claim with no binding — or whose binding fails against the current tree — shows as unverified on every surface. No exceptions, because exceptions are how the losing tower died.
The graph finally meets the ledger. Plato can already prove who-runs-what and who-writes-what; the ledger already holds claims. This wires them together — the capability the truth-class method spec logged as an ask becomes machinery.
Rulings ride free. "Robert approved X" is just a claim whose receipt is your verbatim words + scope + document version. Same courts, same fencing — the governance layer costs no separate build.
The five slices
S1 — the orphaned-test tripwire. A test that exists but is wired to nothing turns the gate red. SHIPPED last night (#201) — already caught nothing on trunk because trunk is clean; proven by planted orphan.
S2 — reach receipts. The new court: wiring and sole-writer claims proven structurally. The Plato⇄ledger wiring.
S3 — read-side fencing. Binding state rendered on every surface; the zero-naked-claims sweep gate.
S4 — the rulings court. Your decisions as bound claims (verbatim + scope + document version; provisional-until-confirmed). Timing is your call below.
S5 — the lift experiment. Same tower laboratory, binding ON vs OFF, sealed in advance. Produces the number: escape reduction per unit of ceremony.
The kill number, sealed now so we can't fudge it later: if S5 shows less than a 20% escape reduction, the milestone stops at S2 and we bank it as hygiene, not an organ.