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>

Cargo.toml

@@ -10,8 +10,5 @@ codegen-units = 1
 [dependencies]
 byteorder = "1.5.0"
 clap = { version = "4.5.21", features = ["derive"] }
-ncurses = "6.0.1"
+crossterm = "0.29.0"
 rustfft = "6.2.0"
-
-[patch.crates-io]
-ncurses = { git = "https://github.com/jeaye/ncurses-rs" }