ROLE-SEPARATED EVIDENCE + MODEL GOVERNANCE

Cross-check evidence before BIM production begins.

Separate roles research traceable drawing evidence, classify readiness, control modeling scope, and independently review results before authority promotion.

14accepted evidence records

2real readiness outcomes

5separated role boundaries

Publication-authorized stair candidate shown within a redacted BIM context — ISOLATED WORK CANDIDATEPublication-authorized, redacted project view

HOW THE PRODUCT WORKS

Evidence is cross-checked before geometry. Models are cross-checked before authority.

This demonstration proves a role-separated agent workflow. One evidence-research capability covers multiple disciplines; it does not claim three simultaneous specialist agents.

01 · EVIDENCE RESEARCH

Traceable source claims

ARCHITECTURAL PLANSTRUCTURAL DETAILSECTION / DETAIL

An external research role records source, region, discipline, confidence and authorization.

02 · READINESS ENGINE

Cross-check requirements

STAIR · 14 / 14 → READYINTERFACE · MISSING → HUMAN

A separate reasoning role decides whether evidence closes the scope. No evidence means no model.

03 · CONTROLLED MODELING

Package before production

READY → WORK PACKAGEISOLATED WORK ONLY

The builder receives explicit targets and protected non-targets. Authority remains read-only.

04 · INDEPENDENT CHECKS

Model result cross-check

FULL REGRESSIONREAD-ONLY REVIEWER

The reviewer is a separate session and cannot build, repair, reclassify, or self-promote.

CROSS-SOURCE EVIDENCE MATRIX

The sources close different parts of one bounded stair requirement set.

Complementary requirement closure across authorized sources — not a claim that every value is independently duplicated.

RequirementAuthorized sourceAccepted valueDecision

Flight widthArchitectural plan1,200 mmACCEPTED

Floor heightArchitectural section4,200 mmACCEPTED

Waist thicknessStructural detail150 mmACCEPTED

STAIR SCOPE14 / 14 requirements closedREADY_TO_MODEL

ADJACENT INTERFACENo approved architectural or structural evidence registeredHUMAN_CLARIFICATION_REQUIRED

PROJECT READINESS

Every item ends in exactly one state.

Counts below are measured from two real decision artifacts. Zero is a real result.

READY TO MODEL1

CROSSCHECK0

HUMAN CLARIFICATION1

COORDINATION0

BLOCKED0

ETA-01 · MACHINE DECISION

Stair work package

READY_TO_MODEL

MODELINGALLOWED IN ISOLATED WORK ONLY

Decision reason: Fourteen accepted evidence records close geometry, elevation, orientation and interface requirements against the live authority baseline.
Missing / conflicting: None. Unresolved assumptions: 0.
Recommended next action: Approved by a separate read-only reviewer and promoted by the controlling authority role.
Work package: CONTROLLED PACKAGE ETA-01
Current REV status: New authority REV created — confidential identifier withheld

Publication-authorized redacted stair drawing with traceable measured values

DRAWING EVIDENCE · REDACTED FOR PUBLICATION

4,200 mmfloor height99% CONF.

1,200 mmflight width96% CONF.

250 mmtread depth99% CONF.

13 + 12riser split98% CONF.

CONTROLLED PRODUCTION CYCLE

Independent review passed. A new REV was created.

VERIFIED FINAL STATUS

01Evidence14 accepted records

02Data audit34 / 34

03Regression15 / 15

04Non-target diff0 across 2,334

05Bonsai GUIPASS · IFC unchanged

06Independent reviewPASS — 0 / 0 / 0

07New authority REVNEW REV CREATED

A REAL DEFECT THE GATE STOPPED

A correct stair almost changed 508 unrelated BIM products.

The stair passed in isolation. The first integrated WORK candidate did not. Authority Gate blocked 508 unintended non-target representation differences before promotion, so the authoritative BIM was never modified.

BEFOREINITIAL WORK INTEGRATION

Isolated stair audit34 / 34 PASS

Authority regressionBLOCKED · 14 / 15

508unintended non-target
representation differences

350 slabs · 124 beams · 19 annotations · 13 columns · 2 stairs

ROOT CAUSESHARED IFC CONTEXT

World coordinate system Y

0→2,400 mm

A shared representation context was changed inside the candidate. The Gate detected its downstream fingerprint impact.

AFTERWORK-ONLY REPAIR

0 / 2,334protected non-target differences

Regression rerun 15 / 15 PASS
Independent review 0 / 0 / 0
Authority source UNCHANGED

34 / 34
STAIR PASS→508
GATE BLOCKED→WORK ONLY
CONTEXT REPAIRED→0 / 2,334
REVIEW + PROMOTION

AUTHORITY INTEGRITY

One writer. Separate reviewer. Controlled promotion.

AUTHORITY
READ ONLY→WORK
ISOLATED→REVIEW
INDEPENDENT→NEW REV
PROMOTED

REV227 — unchanged: VERIFIED — VALUE WITHHELD
WORK-ETA-01 — reviewed: INDEPENDENT REVIEW · 0 / 0 / 0
REV228 — created: CONTROLLED PROMOTION

Source authority SHA-256: VERIFIED — VALUE WITHHELD
New authority SHA-256: VERIFIED — VALUE WITHHELD
Authority source: UNCHANGED