writing-univer-planslisted

# Writing Univer Plans Write the workbook-domain success criteria and plan before any SaC assertion or migration source work. The success criteria locks the target outcome as a checklist. The plan is a source-first authoring artifact, not chat-only notes. This is not generic software planning. The plan exists to make spreadsheet behavior explicit: Excel-domain meaning, range roles, formulas, formatting, validation, preservation boundaries, and assertion gates. <EXTREMELY-IMPORTANT> If complex SaC workbook behavior is involved, you MUST write or update the workspace plan before writing `assertions.ts` or editing Migration Packs. IF THIS SKILL APPLIES, SUCCESS CRITERIA FIRST. PLAN SECOND. ASSERTIONS THIRD. MIGRATION SOURCE FOURTH. </EXTREMELY-IMPORTANT> ## The Rule Decide workbook behavior in source before executing it. ```dot digraph writing_univer_plans { "SaC workbook task received" [shape=doublecircle]; "Write success criteria checklist" [shape=box]; "Read workbook evidence" [shape=box]; "Classify range roles" [shape=box]; "Resolve workbook behavior decisions" [shape=box]; "Decompose Migration Packs" [shape=box]; "Define assertion gates" [shape=box]; "Write plan file" [shape=box]; "Plan self-review" [shape=box]; "Ready for executing-univer-plans" [shape=doublecircle]; "SaC workbook task received" -> "Write success criteria checklist"; "Write success criteria checklist" -> "Read workbook evidence"; "Read workbook ev