refactor: improve write_todos tool and UI components

- Refactored the write_todos tool to enhance argument and result schemas using Zod for better validation and type safety.
- Updated the WriteTodosToolUI to streamline the rendering logic and improve loading states, ensuring a smoother user experience.
- Enhanced the Plan and TodoItem components to better handle streaming states and display progress, providing clearer feedback during task management.
- Cleaned up code formatting and structure for improved readability and maintainability.

surfsense_web/components/tool-ui/shared/schema.ts

@@ -4,10 +4,10 @@ import { z } from "zod";
  * Shared action schema for tool UI components
  */
 export const ActionSchema = z.object({
-  id: z.string(),
-  label: z.string(),
-  variant: z.enum(["default", "secondary", "destructive", "outline", "ghost", "link"]).optional(),
-  disabled: z.boolean().optional(),
+	id: z.string(),
+	label: z.string(),
+	variant: z.enum(["default", "secondary", "destructive", "outline", "ghost", "link"]).optional(),
+	disabled: z.boolean().optional(),
 });
 
 export type Action = z.infer<typeof ActionSchema>;
@@ -16,9 +16,8 @@ export type Action = z.infer<typeof ActionSchema>;
  * Actions configuration schema
  */
 export const ActionsConfigSchema = z.object({
-  confirm: ActionSchema.optional(),
-  cancel: ActionSchema.optional(),
+	confirm: ActionSchema.optional(),
+	cancel: ActionSchema.optional(),
 });
 
 export type ActionsConfig = z.infer<typeof ActionsConfigSchema>;
-