feat(tui): add extension management screen (#8536)

crates/goose-acp/acp-meta.json

@@ -35,6 +35,11 @@
       "requestType": "GetExtensionsRequest",
       "responseType": "GetExtensionsResponse"
     },
+    {
+      "method": "_goose/session/extensions",
+      "requestType": "GetSessionExtensionsRequest",
+      "responseType": "GetSessionExtensionsResponse"
+    },
     {
       "method": "_goose/session/provider/update",
       "requestType": "UpdateProviderRequest",

crates/goose-acp/acp-schema.json

@@ -168,6 +168,33 @@
       "x-side": "agent",
       "x-method": "_goose/config/extensions"
     },
+    "GetSessionExtensionsRequest": {
+      "type": "object",
+      "properties": {
+        "sessionId": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "sessionId"
+      ],
+      "x-side": "agent",
+      "x-method": "_goose/session/extensions"
+    },
+    "GetSessionExtensionsResponse": {
+      "type": "object",
+      "properties": {
+        "extensions": {
+          "type": "array",
+          "items": {}
+        }
+      },
+      "required": [
+        "extensions"
+      ],
+      "x-side": "agent",
+      "x-method": "_goose/session/extensions"
+    },
     "UpdateProviderRequest": {
       "type": "object",
       "properties": {
@@ -710,6 +737,15 @@
                   "description": "Params for _goose/config/extensions",
                   "title": "GetExtensionsRequest"
                 },
+                {
+                  "allOf": [
+                    {
+                      "$ref": "#/$defs/GetSessionExtensionsRequest"
+                    }
+                  ],
+                  "description": "Params for _goose/session/extensions",
+                  "title": "GetSessionExtensionsRequest"
+                },
                 {
                   "allOf": [
                     {
@@ -898,6 +934,14 @@
                       ],
                       "title": "GetExtensionsResponse"
                     },
+                    {
+                      "allOf": [
+                        {
+                          "$ref": "#/$defs/GetSessionExtensionsResponse"
+                        }
+                      ],
+                      "title": "GetSessionExtensionsResponse"
+                    },
                     {
                       "allOf": [
                         {

crates/goose-acp/src/server.rs

@@ -2291,6 +2291,34 @@ impl GooseAcpAgent {
         })
     }
 
+    #[custom_method(GetSessionExtensionsRequest)]
+    async fn on_get_session_extensions(
+        &self,
+        req: GetSessionExtensionsRequest,
+    ) -> Result<GetSessionExtensionsResponse, sacp::Error> {
+        let internal_id = self.internal_session_id(&req.session_id).await?;
+        let session = self
+            .session_manager
+            .get_session(&internal_id, false)
+            .await
+            .map_err(|e| sacp::Error::internal_error().data(e.to_string()))?;
+
+        let extensions = EnabledExtensionsState::extensions_or_default(
+            Some(&session.extension_data),
+            goose::config::Config::global(),
+        );
+
+        let extensions_json = extensions
+            .into_iter()
+            .map(|e| serde_json::to_value(&e))
+            .collect::<Result<Vec<_>, _>>()
+            .map_err(|e| sacp::Error::internal_error().data(e.to_string()))?;
+
+        Ok(GetSessionExtensionsResponse {
+            extensions: extensions_json,
+        })
+    }
+
     #[custom_method(UpdateProviderRequest)]
     async fn on_update_provider(
         &self,

crates/goose-sdk/src/custom_requests.rs

@@ -104,6 +104,18 @@ pub struct GetExtensionsResponse {
     pub warnings: Vec<String>,
 }
 
+#[derive(Debug, Default, Clone, Serialize, Deserialize, JsonSchema, JsonRpcRequest)]
+#[request(method = "_goose/session/extensions", response = GetSessionExtensionsResponse)]
+#[serde(rename_all = "camelCase")]
+pub struct GetSessionExtensionsRequest {
+    pub session_id: String,
+}
+
+#[derive(Debug, Default, Clone, Serialize, Deserialize, JsonSchema, JsonRpcResponse)]
+pub struct GetSessionExtensionsResponse {
+    pub extensions: Vec<serde_json::Value>,
+}
+
 /// Atomically update the provider for a live session.
 #[derive(Debug, Default, Clone, Serialize, Deserialize, JsonSchema, JsonRpcRequest)]
 #[request(method = "_goose/session/provider/update", response = UpdateProviderResponse)]