Documentation updates:
- Update README.md title and all references
- Update PROJECT_GUIDELINES.md title and guidelines
- Update all documentation files in docs/ directory
- Update device setup guides (Kobo, KOReader)
- Update API and architecture documentation
- Update completion summaries and progress reports
This is part 5 of the project rename to Bookhoard.
- Analytics API endpoints (reading stats, device usage, popular books)
- Bulk operations for conflicts, books, and collections
- Book matching and auto-linking endpoints
- Unlinked book management
- OPDS on-the-fly conversion
- Request/response examples for all endpoints
- Authentication requirements and error handling