ForgeKitFORGEKIT

Build Log

Engine: The Prediction Ledger

June 22, 2026

The OS got its training layer — prediction_attribution, the Prediction Ledger named as the asset, and three Strikes that lock the architecture before the Council is built.

EngineOSCouncil
3
Strikes captured
3
Anvils recorded
1
new schema field
223
lines added to OS docs

Timeline

Start
OS feedback consumed
External evaluation — 'documentation to governance' transition confirmed
Early
Strike: Council is a retrieval system
Six headings in a struct is ceremony, not expertise
Mid
prediction_attribution field added
The data collection layer that earns the Council — not the Council itself
Mid
Strike: Ledger is the asset
Council is the consumer — the ledger outlasts any mechanism that reads from it
Late
Three-altitude distinction captured
Lessons explain, traps operationalize, prediction entries train judgment
Close
Ledger lifecycle named
How does a ledger entry die? Named as a future question before 300 entries accumulate

What shipped

prediction_attribution field added to spin_triage in _SCHEMA.md — spin_id, should_have_been_caught_by, why_missed, lesson

Phase 1.5 section added to crucible-proposal.md — the bridge between plumbing fixes and Council, with QE-first rationale

Prediction Ledger named as its own section — validators prove present, attribution explains past, ledger trains future, Council consumes ledger

Ledger lifecycle question documented — how entries die, how they graduate, what happens to black swans. Not built — named for 50+ entries from now

Strike: The Council is a retrieval system, not a JSON shape — strikes.md + anvils.md

Strike: The Prediction Ledger is the asset. The Council is the consumer — strikes.md + anvils.md

Strike: ForgeKit builds at three altitudes of knowledge — lessons, traps, prediction — strikes.md

“You didn't build the Council. You built the data structure that can eventually prove whether a Council should exist. Those are radically different things.”

— External OS review, 2026-06-22