## Summary * **What is the goal of this PR?** Update project documentation to match the current master implementation for cache formats, i18n, file transfer/web server workflows, SD-card fonts, and root user-facing docs. * **What changes are included?** Refreshes `book.bin`/`section.bin` docs for v6/v25, updates File Transfer/Calibre/WebDAV/API docs, documents 24 UI languages and JSON language persistence, updates root README/USER_GUIDE cache and network details, and syncs the tracked CLAUDE skill doc cache-version notes. ## Additional Context * Docs-only change. Verified with `git diff --check origin/master..HEAD` and stale-reference greps for old cache versions, removed i18n APIs, old WiFi screen wording, and raw `Serial.printf` examples. No firmware build was run. --- ### AI Usage While CrossPoint doesn't have restrictions on AI tools in contributing, please be transparent about their usage as it helps set the right context for reviewers. Did you use AI tools to help write this code? _**NO**_
Contributing Docs
This section is a lightweight contributor guide for CrossPoint Reader. It is written for software developers who may be new to embedded development.
If you are new, start with Getting Started.