fix(oauth): correct parameter names (code_autorisation, not code)

Qobuz redirects to play.qobuz.com/discover?code_autorisation=XXX
not ?code=XXX. Both the navigation intercept and the /oauth/callback
API call were using the wrong parameter name, so the code was never
captured and the exchange request was malformed.

crates/qbz-qobuz/src/client.rs

@@ -210,7 +210,7 @@ impl QobuzClient {
             .http
             .get(&callback_url)
             .headers(headers)
-            .query(&[("code", code), ("private_key", &private_key)])
+            .query(&[("code_autorisation", code), ("private_key", &private_key)])
             .send()
             .await?;
 

src-tauri/src/api/client.rs

@@ -211,7 +211,7 @@ impl QobuzClient {
             .http
             .get(&callback_url)
             .headers(headers)
-            .query(&[("code", code), ("private_key", &private_key)])
+            .query(&[("code_autorisation", code), ("private_key", &private_key)])
             .send()
             .await?;
 

src-tauri/src/commands_v2.rs

@@ -1078,10 +1078,10 @@ pub async fn v2_start_oauth_login(
     .resizable(true)
     .on_navigation(move |url| {
         log::info!("[OAuth] on_navigation: {}", url);
-        // Intercept redirect to play.qobuz.com/discover?code=...
+        // Intercept redirect to play.qobuz.com/discover?code_autorisation=...
         if url.host_str() == Some("play.qobuz.com") {
             for (key, value) in url.query_pairs() {
-                if key == "code" {
+                if key == "code_autorisation" || key == "code" {
                     let mut holder = code_holder_nav.lock().unwrap();
                     // Only act on the first code (idempotent)
                     if holder.is_none() {