Delete all Rust crates (crates/) and Cargo files. The nuwiki-ls binary
is now built in the separate nuwiki-rs repository and downloaded at
install time from the Gitea release assets, with a cargo build fallback
that clones nuwiki-rs.
Update all documentation to reflect the split repo layout.
`git add -A` in the previous commit accidentally swept in
.claude/scheduled_tasks.lock — a Claude Code local runtime artifact. Remove
it from the index and gitignore the .claude/ dir so it can't recur.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>