refactor: build the app with Application::create

Application::new(qh, sender) took the session's Wayland queue handle,
which no client ever used, and calloop's sender; cce-ui is retiring it
for create(sender: AppSender<_>), which names no window system. The
body is unchanged: an app that keeps calloop's sender converts the
AppSender into it on the first line, and the now-unused QueueHandle and
EngineState imports go.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

 src/main.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index e338350..cfe853d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,10 +16,9 @@ use std::sync::atomic::{AtomicU64, Ordering};
 use std::sync::Arc;
 
 use chrono::{Datelike, NaiveDate, NaiveDateTime, Timelike};
-use wayland_client::QueueHandle;
 
 use cce_ui::widget::Owned;
-use cce_ui::engine::{Application, EngineState, LogicalPosition, LogicalSize, WindowSettings};
+use cce_ui::engine::{Application, LogicalPosition, LogicalSize, WindowSettings};
 use cce_ui::layout::{
     align_text_y, bevel_width, control_gap, list_font_parsed, plate_corner_radius,
     plate_padding,
@@ -637,7 +636,9 @@ impl WeatherApp {
 impl Application for WeatherApp {
     type Message = Message;
 
-    fn new(_qh: &QueueHandle<EngineState<Self>>, sender: calloop::channel::Sender<Self::Message>) -> Self {
+    fn create(sender: cce_ui::engine::AppSender<Self::Message>) -> Self {
+        // The app keeps calloop's sender; `AppSender` converts into it.
+        let sender: calloop::channel::Sender<Self::Message> = sender.into();
         let config = config::load_config();
         let state = config::load_state();
         let units = config::resolve_units(&state, &config);