docs: update ExcelReader, add MatrixParser, SpreadsheetValidator, DistrictVolumeProcessor pages (#905)
Refactor markdown links to standard format across documentation - Converted wikilinks ([[Target|Display]]) to standard markdown links ([Display](Target)) in various markdown files. - Updated references in ConditionalField.md, FileUploadInput.md, FormulaInput.md, ReadonlyInput.md, Layout components, Waste components, context-and-hook documentation, core components, and Cypress documentation. - Ensured consistency in link formatting for better readability and navigation.
Refactor documentation links to use wiki-style formatting for improved navigation consistency across components and services. Update references in various markdown files including Components, Form, Layout, Waste, context-and-hook, and testing documentation. Ensure all related components and services are correctly linked for better accessibility and clarity.
docs: enhance ExcelReader documentation with detailed type definitions and usage examples
docs: add ExcelReader service documentation - Create wiki page for ExcelReader service (Layer 1 of import pipeline) - Document public interface, design principles, dependencies, constraints - Include usage examples and links to related layers - Update Components.md to include new Services section - Update _Sidebar.md to link to ExcelReader documentation Completes feature 905 documentation.