feat(app): turn on AccessKit, and name the controls drawn as icons

eframe now builds with its accesskit feature, so the widget tree reaches
the platform screen reader. Buttons drawn as an icon glyph were read as
the icon font's private code point, and the hand-painted ones (play,
poster tiles, the watched mark, download rings, the seek bar) as
nothing. A Named trait gives them a name, and hint() makes the existing
hover text that name.

crates/pstr-app/src/ui/mod.rs

@@ -25,6 +25,7 @@ use pstr_core::metadata::{ArtShape, EpisodeGuide, EpisodeMetadata, MetadataRecor
 
 use crate::engine::{Engine, ImageCache, WIDE_MAX_EDGE, thumbnail_key};
 use crate::theme;
+use widgets::Named;
 
 /// Everything the pages need to draw one title's picture.
 ///
@@ -324,7 +325,7 @@ pub fn search_field(ui: &mut egui::Ui, search: &mut String, focus: bool) {
         );
         if response
             .on_hover_cursor(egui::CursorIcon::PointingHand)
-            .on_hover_text("Clear (Esc)")
+            .hint("Clear (Esc)")
             .clicked()
         {
             search.clear();
@@ -529,6 +530,7 @@ fn filled(ui: &mut egui::Ui, text: &str, fill: Fill, extra: Vec2) -> egui::Respo
     );
 
     let (rect, response) = ui.allocate_exact_size(size, Sense::click());
+    let response = response.named(text);
     if !ui.is_rect_visible(rect) {
         return response;
     }
@@ -626,6 +628,11 @@ pub fn card(ui: &mut egui::Ui, card: Card<'_>) -> egui::Response {
 
     let (rect, response) =
         ui.allocate_exact_size(Vec2::new(width, image_height + text_height), Sense::click());
+    let response = if card.subtitle.is_empty() {
+        response.named(card.name)
+    } else {
+        response.named(format!("{}, {}", card.name, card.subtitle))
+    };
     // Reached with the arrow keys or Tab: bring it into view, before the
     // early return below would skip a tile that is just off screen.
     if response.gained_focus() {