Spreadsheet Tamper X-Ray: Hardcoded Formula Overrides, veryHidden Sheets & White Text

Deterministic SpreadsheetML R1C1 canonical formula-grid spatial discontinuity detector + foreground-vs-fill ΔE<2 invisible-text hunter + workbook.xml state='veryHidden' unlocker engine (.xlsx, .xlsm) built for Microsoft Excel, Big4 Audit, Construction Estimating — zero-upload ephemeral Wasm RAM execution.

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Cloudflare Ephemeral Wasm RAM · 0% Retention

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