feat: add accordion overlay controls and icon API

src-tauri/src/server/routes.rs

@@ -1,6 +1,7 @@
 use crate::app_state::AppState;
 use crate::countdown::commands::build_snapshot_dtos;
 use crate::countdown::events::AppEvent;
+use axum::Json;
 use axum::extract::{Path, Query, State};
 use axum::response::sse::KeepAlive;
 use axum::response::{
@@ -27,6 +28,13 @@ pub async fn overlay_countdown(
         .and_then(|snaps| snaps.into_iter().find(|s| s.id == q.id))
         .map(|s| format_remaining(s.duration as u64))
         .unwrap_or_else(|| "??:??:??.???".to_string());
+    let config = state
+        .overlay_configs
+        .lock()
+        .await
+        .get(&q.id)
+        .cloned()
+        .unwrap_or_default();
 
     let mut env = minijinja::Environment::new();
     env.add_template(
@@ -37,7 +45,13 @@ pub async fn overlay_countdown(
     let html = env
         .get_template("page")
         .unwrap()
-        .render(minijinja::context! { id => q.id, remaining => remaining })
+        .render(minijinja::context! {
+            id => q.id,
+            remaining => remaining,
+            icon => config.icon,
+            text_color => config.text_color,
+            bg_color => config.bg_color,
+        })
         .unwrap();
     Html(html)
 }
@@ -56,6 +70,9 @@ pub async fn sse_countdown(
                 .event("tick")
                 .data(format_remaining(s.duration as u64)))
         }),
+        Ok(AppEvent::ConfigChanged(cid)) if cid == id => {
+            Some(Ok(Event::default().event("reload").data("")))
+        }
         _ => None,
     });
     Sse::new(stream).keep_alive(
@@ -72,3 +89,19 @@ fn format_remaining(ms: u64) -> String {
     let millis = ms % 1_000;
     format!("{:02}:{:02}:{:02}.{:03}", h, m, s, millis)
 }
+
+pub async fn list_icons() -> Json<Vec<String>> {
+    let mut names = Vec::new();
+    if let Ok(mut entries) = tokio::fs::read_dir("public/icons").await {
+        while let Ok(Some(entry)) = entries.next_entry().await {
+            let path = entry.path();
+            if matches!(path.extension().and_then(|e| e.to_str()), Some("svg" | "png")) {
+                if let Some(filename) = path.file_name().and_then(|s| s.to_str()) {
+                    names.push(filename.to_string());
+                }
+            }
+        }
+    }
+    names.sort();
+    Json(names)
+}