fix: read_resource_tool deadlock causing test_compaction to hang (#6737)

crates/goose/src/agents/extension_manager.rs

@@ -973,9 +973,14 @@ impl ExtensionManager {
         // Loop through each extension and try to read the resource, don't raise an error if the resource is not found
         // TODO: do we want to find if a provided uri is in multiple extensions?
         // currently it will return the first match and skip any others
-
-        // Collect extension names first to avoid holding the lock during iteration
-        let extension_names: Vec<String> = self.extensions.lock().await.keys().cloned().collect();
+        let extension_names: Vec<String> = self
+            .extensions
+            .lock()
+            .await
+            .iter()
+            .filter(|(_name, ext)| ext.supports_resources())
+            .map(|(name, _)| name.clone())
+            .collect();
 
         for extension_name in extension_names {
             let read_result = self

crates/goose/src/agents/snapshots/goose__agents__prompt_manager__tests__one_extension.snap

@@ -31,8 +31,8 @@ in your tool specification.
 
 ## test
 
-test supports resources, you can use platform__read_resource,
-and platform__list_resources on this extension.
+test supports resources, you can use extensionmanager__read_resource,
+and extensionmanager__list_resources on this extension.
 ### Instructions
 how to use this extension
 

crates/goose/src/agents/snapshots/goose__agents__prompt_manager__tests__typical_setup.snap

@@ -31,8 +31,8 @@ in your tool specification.
 
 ## extension_A
 
-extension_A supports resources, you can use platform__read_resource,
-and platform__list_resources on this extension.
+extension_A supports resources, you can use extensionmanager__read_resource,
+and extensionmanager__list_resources on this extension.
 ### Instructions
 <instructions on how to use extension A>
 ## extension_B

crates/goose/src/prompts/system.md

@@ -31,8 +31,8 @@ in your tool specification.
 ## {{extension.name}}
 
 {% if extension.has_resources %}
-{{extension.name}} supports resources, you can use platform__read_resource,
-and platform__list_resources on this extension.
+{{extension.name}} supports resources, you can use extensionmanager__read_resource,
+and extensionmanager__list_resources on this extension.
 {% endif %}
 {% if extension.instructions %}### Instructions
 {{extension.instructions}}{% endif %}