Initial release of excel-weekly-dashboard.

• Designs refreshable Excel dashboards using Power Query, structured tables, validation, and pivot reporting.
• Focuses on creating repeatable weekly KPI workbooks that update from files with minimal manual work.
• Supports ingestion from CSV, XLSX, and exported table formats (DOCX/PDF).
• Provides clear input requirements, step-by-step workflow, and sample output formats.
• Defines robust validation, error detection, and refresh status features to ensure reliable weekly reporting.
• Includes safety guidelines to prevent accidental overwrites and highlight extraction risks.