Upgrade TUI stack: ratatui 0.30, crossterm 0.29

Constrain run_app backend to Error = io::Error for ratatui 0.30's
associated backend error type.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Cargo.toml

@@ -12,8 +12,8 @@ opt-level = 3
 strip = true
 
 [dependencies]
-ratatui = "0.29"
-crossterm = { version = "0.28", features = ["event-stream"] }
+ratatui = "0.30"
+crossterm = { version = "0.29", features = ["event-stream"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 dirs = "5"

src/events.rs

@@ -10,7 +10,7 @@ use crate::app::{App, ConfirmAction, ContextMenuItem, DialogMode, Focus, Setting
 use crate::config::{AppliesTo, CustomMenuItem};
 use crate::ui;
 
-pub fn run_app<B: Backend>(terminal: &mut Terminal<B>, app: &mut App) -> io::Result<()> {
+pub fn run_app<B: Backend<Error = io::Error>>(terminal: &mut Terminal<B>, app: &mut App) -> io::Result<()> {
     loop {
         terminal.draw(|f| ui::draw(f, app))?;