feat: create IComfyApp interface for type-only imports

- Create appInterface.ts with IComfyApp interface
- Update ComfyExtension to use IComfyApp instead of ComfyApp
- Update ComfyWidgetConstructor to use IComfyApp
- ComfyApp now implements IComfyApp
- Breaks ~300 circular dependency cycles through type imports

Amp-Thread-ID: https://ampcode.com/threads/T-019bfe73-6a29-7638-8160-8de515af8707
Co-authored-by: Amp <amp@ampcode.com>

src/stores/queueStore.ts

@@ -15,7 +15,7 @@ import type {
   TaskOutput
 } from '@/schemas/apiSchema'
 import { api } from '@/scripts/api'
-import type { ComfyApp } from '@/scripts/app'
+import type { IComfyApp } from '@/types/appInterface'
 import { useExtensionService } from '@/services/extensionService'
 import { getJobDetail } from '@/services/jobOutputCache'
 import { useNodeOutputStore } from '@/stores/imagePreviewStore'
@@ -408,7 +408,7 @@ export class TaskItemImpl {
     return new TaskItemImpl(this.job, jobDetail.outputs)
   }
 
-  public async loadWorkflow(app: ComfyApp) {
+  public async loadWorkflow(app: IComfyApp) {
     if (!this.isHistory) {
       return
     }