Splits the former 478-line main.rs into focused modules. Drops hashbrown
in favour of std HashMap (the drain_filter API it was used for was
renamed with changed semantics) and drops vendored libusb1-sys in favour
of the system library, matching nlink-cli.
Also removes the Task 2 scaffold's lib.rs/tauri-plugin-opener indirection
(the brief's module layout is a plain binary with no lib target) and drops
the now-dangling "opener:default" permission from capabilities/default.json,
which otherwise fails the Tauri build script with an unresolved permission
error.
Tauri 1.0.0-beta.8 links webkit2gtk-4.0, unavailable on Ubuntu 26.04.
Verified: builds and links libwebkit2gtk-4.1.so.0, libsoup-3.0.so.0,
libjavascriptcoregtk-4.1.so.0 with no webkit-4.0 or libssl.1.1 refs.
Workspace moved from yarn to npm; yarn.lock invalidated by this port.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
