Guided workflow for updating Next.js documentation based on code changes and PR reviews.

• Analyzes git diffs to identify affected documentation files using a code-to-docs mapping reference
• Provides templates and conventions for scaffolding new feature docs (components, functions, config, guides, file conventions)
• Walks through step-by-step updates to existing documentation with user confirmation before each change
• Includes validation checklist and linting commands to ensure formatting compliance
• Handles router-specific content using <AppOnly> and <PagesOnly> components for shared documentation between App and Pages Router