How is this used and audited?

Answer so far

The workbook is one connected reasoning system, not fifteen independent dashboards. A reviewer can trace a Page 1 total backward to its source and an evidence item forward to every conclusion it affects.

The relationship to hold onto

Two-way traceability is the handoff test.

Backward tracePage 1 → Page 4 → Page 6 → engine → Page 5 → source.

Forward traceEvidence → assumption/readiness → schedule/cashflow → resident conclusion.

Independent reconstructionRules, contracts, checks, and history preserve institutional memory.

Current QA state

Twenty-four workbook structural assertions pass

Structure, blank safety, overlap control, terminal timing, chain integrity, readiness records, source contracts, and privacy checks pass. Results remain evidence-gated.

Operating boundary

The web app explains; Excel calculates

The web layer reads a bounded contract tied to the exact v0.7 hash. It does not refresh the source, mutate the workbook, or create a second calculation engine.

Resident resultPage 01

←

ComparisonPage 04

←

CashflowPage 06

←

InputPage 05

←

EvidenceSource contract

Protected support layers behind the journey

01Model Inputs

02Cashflow Event Ledger

03Economic Cash Flow

04Funding & Debt

05Terminal Position

06Sensitivity Engine

07Financial Dashboard

08Readiness Register

09Model Checks

10Source & Query Control

11Evidence Cache

See the workbook connection and limits

Workbook binding: WMS Model Guide!A1:N54; WMS Model Checks!A1:I32

The 15 front sheets are followed by 11 protected support layers.

Every future update must retain source, as-of date, unit, evidence state, change reason, and release history.

Controlled baseline: v0.7, SHA-256 d35db6de8563ce17bd311f760ac14a607f35839e452d2865477dc067d405b6ff.

Open the full source, missingness, and calculation contract →