Add assistant script loading mechanism

- Implement loading of assistant TypeScript index files
- Filter and load only src/index.ts files from assistants directory
- Generate unique IDs for assistant scripts using file path
- Extend application walk method to support assistant script loading

script/script.go

@@ -2,6 +2,7 @@ package script
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/yaoapp/gou/application"
 	v8 "github.com/yaoapp/gou/runtime/v8"
@@ -25,6 +26,27 @@ func Load(cfg config.Config) error {
 		return err
 	}
 
+	// Load assistants
+	err = application.App.Walk("assistants", func(root, file string, isdir bool) error {
+		if isdir {
+			return nil
+		}
+
+		// Keep the src.index only
+		if !strings.HasSuffix(file, "src/index.ts") {
+			return nil
+		}
+
+		id := fmt.Sprintf("assistants.%s", share.ID(root, file))
+		id = strings.TrimSuffix(id, ".src.index")
+		_, err := v8.Load(file, id)
+		return err
+	}, exts...)
+
+	if err != nil {
+		return err
+	}
+
 	return application.App.Walk("services", func(root, file string, isdir bool) error {
 		if isdir {
 			return nil