fix: template content generation (#1716)

* feat:  template-content-generation

* fix(workflow-app): inject CanvasService in template processor to fix getWorkflowVariables call

* fix: update prevTemplateContent

* fix: templateResult Valid

* fix: upload

* fix(workflow-app): update shared storage for all share records without duplicate staticFile entries

- Use direct putObject instead of uploadBuffer to avoid creating duplicate staticFile records
- Update all share records (regular share + template share) instead of only the latest one
- Add JSON data validation to prevent invalid structure updates
- Improve error logging with stack trace for better debugging
- Add independent error handling for each share record

* feat: optimize prompt

Author: anthhub

apps/api/src/modules/share/share-creation.service.ts

@@ -1286,6 +1286,12 @@ export class ShareCreationService {
       throw new ShareNotFoundError();
     }
 
+    // Get workflow variables from Canvas service
+    const variables = await this.canvasService.getWorkflowVariables(user, {
+      canvasId: workflowApp.canvasId,
+    });
+    workflowApp.variables = JSON.stringify(variables) ?? '[]';
+
     // Use creditUsage from database if available (already has markup applied),
     // otherwise calculate from param (apply markup if needed)
     let finalCreditUsage: number;