extensions: add a display name field (#1759)

crates/goose/src/agents/capabilities.rs

@@ -134,7 +134,12 @@ impl Capabilities {
                 );
                 Box::new(McpClient::new(service))
             }
-            ExtensionConfig::Builtin { name, timeout } => {
+            #[allow(unused_variables)]
+            ExtensionConfig::Builtin {
+                name,
+                display_name,
+                timeout,
+            } => {
                 // For builtin extensions, we run the current executable with mcp and extension name
                 let cmd = std::env::current_exe()
                     .expect("should find the current executable")

crates/goose/src/agents/extension.rs

@@ -78,6 +78,7 @@ pub enum ExtensionConfig {
     Builtin {
         /// The name used to identify this extension
         name: String,
+        display_name: Option<String>, // needed for the UI
         timeout: Option<u64>,
     },
 }
@@ -86,6 +87,7 @@ impl Default for ExtensionConfig {
     fn default() -> Self {
         Self::Builtin {
             name: config::DEFAULT_EXTENSION.to_string(),
+            display_name: Some(config::DEFAULT_DISPLAY_NAME.to_string()),
             timeout: Some(config::DEFAULT_EXTENSION_TIMEOUT),
         }
     }

crates/goose/src/config/extensions.rs

@@ -8,6 +8,7 @@ use utoipa::ToSchema;
 pub const DEFAULT_EXTENSION: &str = "developer";
 pub const DEFAULT_EXTENSION_TIMEOUT: u64 = 300;
 pub const DEFAULT_EXTENSION_DESCRIPTION: &str = "";
+pub const DEFAULT_DISPLAY_NAME: &str = "Developer";
 
 #[derive(Debug, Deserialize, Serialize, Clone, ToSchema)]
 pub struct ExtensionEntry {
@@ -42,6 +43,7 @@ impl ExtensionManager {
                         enabled: true,
                         config: ExtensionConfig::Builtin {
                             name: DEFAULT_EXTENSION.to_string(),
+                            display_name: Some(DEFAULT_DISPLAY_NAME.to_string()),
                             timeout: Some(DEFAULT_EXTENSION_TIMEOUT),
                         },
                     },

crates/goose/src/config/mod.rs

@@ -7,6 +7,7 @@ pub use base::{Config, ConfigError, APP_STRATEGY};
 pub use experiments::ExperimentManager;
 pub use extensions::{ExtensionEntry, ExtensionManager};
 
+pub use extensions::DEFAULT_DISPLAY_NAME;
 pub use extensions::DEFAULT_EXTENSION;
 pub use extensions::DEFAULT_EXTENSION_DESCRIPTION;
 pub use extensions::DEFAULT_EXTENSION_TIMEOUT;