feat: add UrlSource for arbitrary URL-based media playback

Introduces the pmourlsource crate as a standard MusicSource that resolves HTTP/HTTPS URLs via a priority-ordered UrlHandler registry. Includes specialized handlers for Qobuz and Radio France alongside an SSRF-safe generic scraper supporting playlists, feeds, and HTML audio. Integrates with existing browse flows, REST endpoints, and Android Web Share targets while updating source capability flags to correctly route URL queries.

pmocontrol/src/pmoserver_ext.rs

@@ -2399,12 +2399,15 @@ fn search_result_container_id(entries: &[ContainerEntry]) -> String {
     entries
         .iter()
         .find(|entry| entry.is_container)
-        .and_then(|entry| {
+        .map(|entry| {
             let parts: Vec<&str> = entry.id.splitn(5, ':').collect();
             if parts.len() == 5 && parts[0] == "qobuz" && parts[1] == "search" {
-                Some(format!("qobuz:search:{}:all:{}", parts[2], parts[4]))
+                // Résultat de recherche Qobuz : reconstruire le container virtuel parent
+                // ex. "qobuz:search:catalog:albums:Beethoven" → "qobuz:search:catalog:all:Beethoven"
+                format!("qobuz:search:{}:all:{}", parts[2], parts[4])
             } else {
-                None
+                // Résultat d'une autre source (ex. UrlSource) : retourner l'ID tel quel
+                entry.id.clone()
             }
         })
         .unwrap_or_else(|| "search".to_string())