T00 foundation: theme, motion, assets, icon, buttons, gallery

Theme tokens in light and dark with high contrast, a palette cross-fade,
motion curves and a damped spring, embedded Lucide icons with Inter and
JetBrains Mono, Icon, Button, IconButton, and a gallery that captures
its own window. Reviewed by codex gpt-6-astra (max): PASS in round 3.

examples/gallery/main.rs

@@ -0,0 +1,78 @@
+mod capture;
+mod pages;
+mod shell;
+mod ui;
+
+use std::path::PathBuf;
+
+use anyhow::{Context as _, Result, bail};
+use ely_gpui_component::Assets;
+use gpui::{
+    App, AppContext, Application, Bounds, KeyBinding, TitlebarOptions, WindowBounds, WindowOptions,
+    actions, point, px, size,
+};
+
+actions!(gallery, [Quit, FocusNext, FocusPrev]);
+
+struct Args {
+    page: usize,
+    capture: Option<PathBuf>,
+}
+
+fn parse_args() -> Result<Args> {
+    let mut args = Args {
+        page: 0,
+        capture: None,
+    };
+    let mut iter = std::env::args().skip(1);
+    while let Some(flag) = iter.next() {
+        let value = iter
+            .next()
+            .with_context(|| format!("{flag} needs a value"))?;
+        match flag.as_str() {
+            "--page" => {
+                args.page = pages::find(&value).with_context(|| format!("no page {value}"))?
+            }
+            "--capture" => args.capture = Some(PathBuf::from(value)),
+            other => bail!("unknown flag {other}"),
+        }
+    }
+    Ok(args)
+}
+
+fn main() -> Result<()> {
+    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
+    let args = parse_args()?;
+    Application::new()
+        .with_assets(Assets)
+        .run(move |cx: &mut App| {
+            ely_gpui_component::init(cx);
+            cx.bind_keys([
+                KeyBinding::new("cmd-q", Quit, None),
+                KeyBinding::new("tab", FocusNext, None),
+                KeyBinding::new("shift-tab", FocusPrev, None),
+            ]);
+            cx.on_action(|_: &Quit, cx| cx.quit());
+            let bounds = Bounds::centered(None, size(px(1280.0), px(820.0)), cx);
+            let options = WindowOptions {
+                window_bounds: Some(WindowBounds::Windowed(bounds)),
+                titlebar: Some(TitlebarOptions {
+                    title: Some("Ely".into()),
+                    appears_transparent: true,
+                    traffic_light_position: Some(point(px(16.0), px(18.0))),
+                }),
+                window_min_size: Some(size(px(880.0), px(560.0))),
+                ..Default::default()
+            };
+            let window = cx
+                .open_window(options, |window, cx| {
+                    cx.new(|cx| shell::Gallery::new(args.page, window, cx))
+                })
+                .expect("gallery window failed to open");
+            cx.activate(true);
+            if let Some(dir) = args.capture {
+                capture::run(window, dir, cx);
+            }
+        });
+    Ok(())
+}