DreamNum

Use when planning complex SaC spreadsheet or workbook behavior, Facade Migration Packs, workbook range roles, migration boundaries, assertion gates, or Excel-domain decisions before implementation.

Use when solving spreadsheet workbook problems with the `univer` CLI as a terminal-native spreadsheet engine: Excel-compatible `.xlsx` handoff, `.univer` packages, workbook inspection, range search, formulas, formatting, charts, shapes, floating images, rich spreadsheet edits, live preview and viewer review comments, versioning, shell-native `pipe out`/`pipe in` roundtrips, or bounded `run` scripts.

Use when implementing or repairing Univer package-local SaC behavior with assertions.ts, Facade Migration Packs, univer sac apply, univer sac verify, or verify evidence loops.

Use when executing a written Univer SaC workbook plan, implementing Facade Migration Packs, repairing plan gaps, or coordinating plan-driven assertion and migration work.

Use when any task involves spreadsheets, workbook files, Excel-compatible files, .xlsx/.csv/.univer packages, sheets, cells, ranges, formulas, charts, formatting, workbook previews, or SaC workbook behavior.