feat: consolidate subagent execution for dynamic tasks (#3444)

Co-authored-by: Lifei Zhou <lifei@squareup.com>

crates/goose/src/agents/subagent_task_config.rs

@@ -0,0 +1,55 @@
+use crate::agents::extension_manager::ExtensionManager;
+use crate::providers::base::Provider;
+use mcp_core::protocol::JsonRpcMessage;
+use std::fmt;
+use std::sync::Arc;
+use tokio::sync::{mpsc, RwLock};
+use uuid::Uuid;
+
+/// Configuration for task execution with all necessary dependencies
+#[derive(Clone)]
+pub struct TaskConfig {
+    pub id: String,
+    pub provider: Option<Arc<dyn Provider>>,
+    pub extension_manager: Option<Arc<RwLock<ExtensionManager>>>,
+    pub mcp_tx: mpsc::Sender<JsonRpcMessage>,
+    pub max_turns: Option<usize>,
+}
+
+impl fmt::Debug for TaskConfig {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("TaskConfig")
+            .field("id", &self.id)
+            .field("provider", &"<dyn Provider>")
+            .field("extension_manager", &"<ExtensionManager>")
+            .field("max_turns", &self.max_turns)
+            .finish()
+    }
+}
+
+impl TaskConfig {
+    /// Create a new TaskConfig with all required dependencies
+    pub fn new(
+        provider: Option<Arc<dyn Provider>>,
+        extension_manager: Option<Arc<RwLock<ExtensionManager>>>,
+        mcp_tx: mpsc::Sender<JsonRpcMessage>,
+    ) -> Self {
+        Self {
+            id: Uuid::new_v4().to_string(),
+            provider,
+            extension_manager,
+            mcp_tx,
+            max_turns: Some(10),
+        }
+    }
+
+    /// Get a reference to the provider
+    pub fn provider(&self) -> Option<&Arc<dyn Provider>> {
+        self.provider.as_ref()
+    }
+
+    /// Get a clone of the MCP sender
+    pub fn mcp_tx(&self) -> mpsc::Sender<JsonRpcMessage> {
+        self.mcp_tx.clone()
+    }
+}