acp: Add more logs to model selector to diagnose issue (#36997)

Release Notes:

- N/A

---------

Co-authored-by: Antonio Scandurra <me@as-cii.com>
Co-authored-by: Cole Miller <cole@zed.dev>
Co-authored-by: Joseph T. Lyons <JosephTLyons@gmail.com>
Co-authored-by: Katie Geer <katie@zed.dev>

crates/acp_thread/src/connection.rs

@@ -232,6 +232,13 @@ impl AgentModelList {
             AgentModelList::Grouped(groups) => groups.is_empty(),
         }
     }
+
+    pub fn len(&self) -> usize {
+        match self {
+            AgentModelList::Flat(models) => models.len(),
+            AgentModelList::Grouped(groups) => groups.values().len(),
+        }
+    }
 }
 
 #[cfg(feature = "test-support")]

crates/agent_ui/src/acp/model_selector.rs

@@ -71,7 +71,7 @@ impl AcpModelPickerDelegate {
                     let (models, selected_model) = futures::join!(models_task, selected_model_task);
 
                     this.update_in(cx, |this, window, cx| {
-                        this.delegate.models = models.ok();
+                        this.delegate.models = models.log_err();
                         this.delegate.selected_model = selected_model.ok();
                         this.delegate.update_matches(this.query(cx), window, cx)
                     })?
@@ -144,6 +144,11 @@ impl PickerDelegate for AcpModelPickerDelegate {
         cx.spawn_in(window, async move |this, cx| {
             let filtered_models = match this
                 .read_with(cx, |this, cx| {
+                    if let Some(models) = this.delegate.models.as_ref() {
+                        log::debug!("Filtering {} models.", models.len());
+                    } else {
+                        log::debug!("No models available.");
+                    }
                     this.delegate.models.clone().map(move |models| {
                         fuzzy_search(models, query, cx.background_executor().clone())
                     })
@@ -155,6 +160,8 @@ impl PickerDelegate for AcpModelPickerDelegate {
                 None => AgentModelList::Flat(vec![]),
             };
 
+            log::debug!("Filtered models. {} available.", filtered_models.len());
+
             this.update_in(cx, |this, window, cx| {
                 this.delegate.filtered_entries =
                     info_list_to_picker_entries(filtered_models).collect();

crates/language_model/src/registry.rs

@@ -208,6 +208,7 @@ impl LanguageModelRegistry {
     ) -> impl Iterator<Item = Arc<dyn LanguageModel>> + 'a {
         self.providers
             .values()
+            .filter(|provider| provider.is_authenticated(cx))
             .flat_map(|provider| provider.provided_models(cx))
     }