fix(release): sync release tags during preflight

[wesbillman]

🤖 Fixes the release preflight fetch so stale local release tags do not block just release.

What changed:

• Fetch origin/main explicitly without pulling all tags into the main preflight fetch.
• Force-sync only v* release tags, which are remote-owned release metadata.
• Keep the strict clean working tree check unchanged.

Also included:

• Mechanical desktop Tauri Clippy cleanups required by the current pre-push hook. The first push was blocked by existing Clippy warnings unrelated to the release fetch change, so these restore the local hook to green.

Validation:

• just --dry-run release
• just desktop-tauri-clippy
• pre-commit hook
• pre-push hook: rust-clippy, rust-tests, desktop-test, desktop-tauri-clippy, mobile-test, desktop-tauri-test