excel

<modeling_standards>

• Zero Formula Errors: Models MUST have zero #REF!, #DIV/0!, or #VALUE! errors.
• Dynamic Logic: You MUST NOT hardcode derived values. You MUST use Excel formulas for all calculations.
• Assumptions: You MUST place all inputs in dedicated assumption cells. </modeling_standards>

<professional_formatting>

• Standards: Specify units in headers ("Revenue ($mm)"). Format zeros as "-".
• Color Coding: The agent SHOULD follow the project's branding skill for color choices. If not defined, the agent SHOULD default to professional standards (e.g., Blue for hardcoded inputs, Black for formulas).
• Visuals: You SHOULD use artifact_tool to render sheets and verify layout. Reference: references/artifact_tool_spreadsheets_api.md. </professional_formatting>

<technical_workflows>

1. Data Analysis (Pandas)

• You SHOULD use Pandas for heavy lifting and aggregation.
• You SHOULD convert to Openpyxl for final professional formatting and formula insertion.