v0.18.0

Fix CI build: pin Cargo.lock to the working Tauri deps

release.sh ran `cargo generate-lockfile`, which re-resolved every dependency to
its latest version and pulled in tauri-runtime/tauri-runtime-wry 2.11.3 + wry
0.55.1 — incompatible with the pinned Tauri version (E0308 on the new-window
closure, E0004 on the new WindowEvent::Suspended/Resumed variants).

Restore the working lock (tauri-runtime(-wry) 2.10.1, wry 0.54.4, tao 0.34.8)
and bump only the opendraft package version. Also change release.sh to bump just
the opendraft version in Cargo.lock instead of regenerating the whole lockfile,
so this can't recur.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>