add SPA config UI, wire media/rss adapters, event-driven layout push

- React SPA: dashboard, data sources CRUD, widgets CRUD, layout builder,
  presets. TanStack Router + Query, shadcn/ui, Vite proxy to :3000
- wire media + rss adapters into polling loop, remove xtb source type
- media adapter: read username/password from headers, proper subsonic auth
- event handler: subscribe to LayoutChanged, push screen update to clients
- fix clippy warnings across workspace (Default impls, collapsible ifs,
  redundant closures, is_none_or, unused imports)

crates/adapters/media/Cargo.toml

@@ -8,6 +8,8 @@ domain.workspace = true
 reqwest.workspace = true
 serde_json.workspace = true
 thiserror.workspace = true
+md5 = "0.7"
+fastrand = "2"
 
 [dev-dependencies]
 tokio.workspace = true

crates/adapters/media/src/error.rs

@@ -4,6 +4,8 @@ pub enum MediaError {
     Request(#[from] reqwest::Error),
     #[error("no url configured")]
     NoUrl,
+    #[error("missing field in headers: {0}")]
+    MissingField(&'static str),
     #[error("parse: {0}")]
     Parse(String),
 }

crates/adapters/media/src/lib.rs

@@ -2,33 +2,61 @@ mod error;
 
 pub use error::MediaError;
 
-use std::collections::BTreeMap;
 use domain::{DataSource, DataSourcePort, Value};
+use std::collections::BTreeMap;
 
 pub struct MediaAdapter {
     client: reqwest::Client,
 }
 
-impl MediaAdapter {
-    pub fn new() -> Self {
+impl Default for MediaAdapter {
+    fn default() -> Self {
         Self {
             client: reqwest::Client::new(),
         }
     }
 }
 
+impl MediaAdapter {
+    pub fn new() -> Self {
+        Self::default()
+    }
+}
+
+fn find_header<'a>(headers: &'a [(String, String)], key: &str) -> Option<&'a str> {
+    headers
+        .iter()
+        .find(|(k, _)| k.eq_ignore_ascii_case(key))
+        .map(|(_, v)| v.as_str())
+}
+
+fn subsonic_token(password: &str, salt: &str) -> String {
+    format!("{:x}", md5::compute(format!("{password}{salt}")))
+}
+
 impl DataSourcePort for MediaAdapter {
     type Error = MediaError;
 
     async fn poll(&self, source: &DataSource) -> Result<Value, Self::Error> {
         let base_url = source.config.url.as_ref().ok_or(MediaError::NoUrl)?;
-        let api_key = source.config.api_key.as_deref().unwrap_or("");
+        let username = find_header(&source.config.headers, "username")
+            .ok_or(MediaError::MissingField("username"))?;
+        let password = find_header(&source.config.headers, "password")
+            .ok_or(MediaError::MissingField("password"))?;
+
+        let salt: String = (0..12).map(|_| fastrand::alphanumeric()).collect();
+        let token = subsonic_token(password, &salt);
 
         let url = format!(
-            "{base_url}/rest/getNowPlaying.view?u=kframe&t={api_key}&s=salt&v=1.16.1&c=kframe&f=json"
+            "{base_url}/rest/getNowPlaying.view?u={username}&t={token}&s={salt}&v=1.16.1&c=kframe&f=json"
         );
 
-        let resp = self.client.get(&url).send().await.map_err(MediaError::Request)?;
+        let resp = self
+            .client
+            .get(&url)
+            .send()
+            .await
+            .map_err(MediaError::Request)?;
         let json: serde_json::Value = resp.json().await.map_err(MediaError::Request)?;
 
         let entries = json["subsonic-response"]["nowPlaying"]["entry"]
@@ -45,15 +73,18 @@ impl DataSourcePort for MediaAdapter {
         let entry = &entries[0];
         let mut result = BTreeMap::new();
         result.insert("playing".into(), Value::Bool(true));
-        result.insert("title".into(), Value::String(
-            entry["title"].as_str().unwrap_or("Unknown").into()
-        ));
-        result.insert("artist".into(), Value::String(
-            entry["artist"].as_str().unwrap_or("Unknown").into()
-        ));
-        result.insert("album".into(), Value::String(
-            entry["album"].as_str().unwrap_or("Unknown").into()
-        ));
+        result.insert(
+            "title".into(),
+            Value::String(entry["title"].as_str().unwrap_or("Unknown").into()),
+        );
+        result.insert(
+            "artist".into(),
+            Value::String(entry["artist"].as_str().unwrap_or("Unknown").into()),
+        );
+        result.insert(
+            "album".into(),
+            Value::String(entry["album"].as_str().unwrap_or("Unknown").into()),
+        );
 
         if let Some(duration) = entry["duration"].as_u64() {
             result.insert("duration".into(), Value::Number(duration as f64));

crates/adapters/media/tests/media_tests.rs

@@ -1,6 +1,6 @@
-use std::time::Duration;
 use domain::{DataSource, DataSourceConfig, DataSourcePort, DataSourceType, Value};
 use media_adapter::MediaAdapter;
+use std::time::Duration;
 
 fn subsonic_response(playing: bool) -> serde_json::Value {
     if playing {
@@ -28,10 +28,10 @@ fn subsonic_response(playing: bool) -> serde_json::Value {
 }
 
 async fn start_fake_subsonic(playing: bool) -> String {
-    let app = axum::Router::new()
-        .route("/rest/getNowPlaying.view", axum::routing::get(move || async move {
-            axum::response::Json(subsonic_response(playing))
-        }));
+    let app = axum::Router::new().route(
+        "/rest/getNowPlaying.view",
+        axum::routing::get(move || async move { axum::response::Json(subsonic_response(playing)) }),
+    );
 
     let listener = tokio::net::TcpListener::bind("127.0.0.1:0").await.unwrap();
     let addr = listener.local_addr().unwrap();
@@ -47,8 +47,11 @@ fn make_source(url: String) -> DataSource {
         poll_interval: Duration::from_secs(5),
         config: DataSourceConfig {
             url: Some(url),
-            headers: vec![],
-            api_key: Some("testtoken".into()),
+            headers: vec![
+                ("username".into(), "test".into()),
+                ("password".into(), "testpass".into()),
+            ],
+            api_key: None,
         },
     }
 }
@@ -62,8 +65,14 @@ async fn returns_now_playing_info() {
     let result = adapter.poll(&source).await.unwrap();
 
     assert_eq!(result.get_path("$.playing"), Some(&Value::Bool(true)));
-    assert_eq!(result.get_path("$.title"), Some(&Value::String("Believer".into())));
-    assert_eq!(result.get_path("$.artist"), Some(&Value::String("Imagine Dragons".into())));
+    assert_eq!(
+        result.get_path("$.title"),
+        Some(&Value::String("Believer".into()))
+    );
+    assert_eq!(
+        result.get_path("$.artist"),
+        Some(&Value::String("Imagine Dragons".into()))
+    );
 }
 
 #[tokio::test]