add scheduler type setting (#3119)

crates/goose-cli/src/commands/configure.rs

@@ -856,6 +856,11 @@ pub async fn configure_settings_dialog() -> Result<(), Box<dyn Error>> {
             "Goose recipe github repo",
             "Goose will pull recipes from this repo if not found locally.",
         )
+        .item(
+            "scheduler",
+            "Scheduler Type",
+            "Choose between built-in cron scheduler or Temporal workflow engine",
+        )
         .interact()?;
 
     match setting_type {
@@ -877,6 +882,9 @@ pub async fn configure_settings_dialog() -> Result<(), Box<dyn Error>> {
         "recipe" => {
             configure_recipe_dialog()?;
         }
+        "scheduler" => {
+            configure_scheduler_dialog()?;
+        }
         _ => unreachable!(),
     };
 
@@ -1227,3 +1235,57 @@ fn configure_recipe_dialog() -> Result<(), Box<dyn Error>> {
     }
     Ok(())
 }
+
+fn configure_scheduler_dialog() -> Result<(), Box<dyn Error>> {
+    let config = Config::global();
+
+    // Check if GOOSE_SCHEDULER_TYPE is set as an environment variable
+    if std::env::var("GOOSE_SCHEDULER_TYPE").is_ok() {
+        let _ = cliclack::log::info("Notice: GOOSE_SCHEDULER_TYPE environment variable is set and will override the configuration here.");
+    }
+
+    // Get current scheduler type from config for display
+    let current_scheduler: String = config
+        .get_param("GOOSE_SCHEDULER_TYPE")
+        .unwrap_or_else(|_| "legacy".to_string());
+
+    println!(
+        "Current scheduler type: {}",
+        style(&current_scheduler).cyan()
+    );
+
+    let scheduler_type = cliclack::select("Which scheduler type would you like to use?")
+        .items(&[
+            ("legacy", "Built-in Cron (Default)", "Uses Goose's built-in cron scheduler. Simple and reliable for basic scheduling needs."),
+            ("temporal", "Temporal", "Uses Temporal workflow engine for advanced scheduling features. Requires Temporal CLI to be installed.")
+        ])
+        .interact()?;
+
+    match scheduler_type {
+        "legacy" => {
+            config.set_param("GOOSE_SCHEDULER_TYPE", Value::String("legacy".to_string()))?;
+            cliclack::outro(
+                "Set to Built-in Cron scheduler - simple and reliable for basic scheduling",
+            )?;
+        }
+        "temporal" => {
+            config.set_param(
+                "GOOSE_SCHEDULER_TYPE",
+                Value::String("temporal".to_string()),
+            )?;
+            cliclack::outro(
+                "Set to Temporal scheduler - advanced workflow engine for complex scheduling",
+            )?;
+            println!();
+            println!("📋 {}", style("Note:").bold());
+            println!("  • Temporal scheduler requires Temporal CLI to be installed");
+            println!("  • macOS: brew install temporal");
+            println!("  • Linux/Windows: https://github.com/temporalio/cli/releases");
+            println!("  • If Temporal is unavailable, Goose will automatically fall back to the built-in scheduler");
+            println!("  • The scheduling engines do not share the list of schedules");
+        }
+        _ => unreachable!(),
+    };
+
+    Ok(())
+}