fix: replace ncurses with crossterm to fix CI builds on both arches

ncurses-rs is broken on Arch Linux ARM (missing TRUE constant in
generated bindings) and the git HEAD version breaks Ubuntu too.
crossterm is pure Rust with no C dependency, eliminating the issue
on all platforms.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -25,12 +25,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install system dependencies
-        if: matrix.arch == 'x86_64'
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libncurses-dev
-
       - name: Install Rust stable
         uses: dtolnay/rust-toolchain@stable
         with: