feat: enable verbatimModuleSyntax in TypeScript config (#5533)

## Summary
- Enable `verbatimModuleSyntax` compiler option in TypeScript
configuration
- Update all type imports to use explicit `import type` syntax
- This change will Improve tree-shaking and bundler compatibility

## Motivation
The `verbatimModuleSyntax` option ensures that type-only imports are
explicitly marked with the `type` keyword. This:
- Makes import/export intentions clearer
- Improves tree-shaking by helping bundlers identify what can be safely
removed
- Ensures better compatibility with modern bundlers
- Follows TypeScript best practices for module syntax

## Changes
- Added `"verbatimModuleSyntax": true` to `tsconfig.json`
- Updated another 48+ files to use explicit `import type` syntax for
type-only imports
- No functional changes, only import/export syntax improvements

## Test Plan
- [x] TypeScript compilation passes
- [x] Build completes successfully  
- [x] Tests pass
- [ ] No runtime behavior changes

🤖 Generated with [Claude Code](https://claude.ai/code)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5533-feat-enable-verbatimModuleSyntax-in-TypeScript-config-26d6d73d36508190b424ef9b379b5130)
by [Unito](https://www.unito.io)

Author: snomiao

build/plugins/comfyAPIPlugin.ts

@@ -1,5 +1,5 @@
 import path from 'path'
-import { Plugin } from 'vite'
+import type { Plugin } from 'vite'
 
 interface ShimResult {
   code: string

build/plugins/generateImportMapPlugin.ts

@@ -1,7 +1,7 @@
 import glob from 'fast-glob'
 import fs from 'fs-extra'
 import { dirname, join } from 'node:path'
-import { HtmlTagDescriptor, Plugin, normalizePath } from 'vite'
+import { type HtmlTagDescriptor, type Plugin, normalizePath } from 'vite'
 
 interface ImportMapSource {
   name: string

src/extensions/core/groupNode.ts

@@ -11,16 +11,16 @@ import {
 } from '@/lib/litegraph/src/litegraph'
 import { useToastStore } from '@/platform/updates/common/toastStore'
 import {
-  ComfyLink,
-  ComfyNode,
-  ComfyWorkflowJSON
+  type ComfyLink,
+  type ComfyNode,
+  type ComfyWorkflowJSON
 } from '@/platform/workflow/validation/schemas/workflowSchema'
 import type { ComfyNodeDef } from '@/schemas/nodeDefSchema'
 import { useDialogService } from '@/services/dialogService'
 import { useExecutionStore } from '@/stores/executionStore'
 import { useNodeDefStore } from '@/stores/nodeDefStore'
 import { useWidgetStore } from '@/stores/widgetStore'
-import { ComfyExtension } from '@/types/comfy'
+import { type ComfyExtension } from '@/types/comfy'
 import { ExecutableGroupNodeChildDTO } from '@/utils/executableGroupNodeChildDTO'
 import { GROUP } from '@/utils/executableGroupNodeDto'
 import { deserialiseAndCreate, serialise } from '@/utils/vintageClipboard'

src/extensions/core/load3d.ts

@@ -9,7 +9,7 @@ import Load3dUtils from '@/extensions/core/load3d/Load3dUtils'
 import { t } from '@/i18n'
 import type { IStringWidget } from '@/lib/litegraph/src/types/widgets'
 import { useToastStore } from '@/platform/updates/common/toastStore'
-import { CustomInputSpec } from '@/schemas/nodeDef/nodeDefSchemaV2'
+import { type CustomInputSpec } from '@/schemas/nodeDef/nodeDefSchemaV2'
 import { api } from '@/scripts/api'
 import { ComfyApp, app } from '@/scripts/app'
 import { ComponentWidgetImpl, addWidget } from '@/scripts/domWidget'

src/extensions/core/load3d/AnimationManager.ts

@@ -1,9 +1,9 @@
 import * as THREE from 'three'
 
 import {
-  AnimationItem,
-  AnimationManagerInterface,
-  EventManagerInterface
+  type AnimationItem,
+  type AnimationManagerInterface,
+  type EventManagerInterface
 } from '@/extensions/core/load3d/interfaces'
 
 export class AnimationManager implements AnimationManagerInterface {

src/extensions/core/load3d/CameraManager.ts

@@ -2,11 +2,11 @@ import * as THREE from 'three'
 import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
 
 import {
-  CameraManagerInterface,
-  CameraState,
-  CameraType,
-  EventManagerInterface,
-  NodeStorageInterface
+  type CameraManagerInterface,
+  type CameraState,
+  type CameraType,
+  type EventManagerInterface,
+  type NodeStorageInterface
 } from './interfaces'
 
 export class CameraManager implements CameraManagerInterface {

src/extensions/core/load3d/ControlsManager.ts

@@ -2,9 +2,9 @@ import * as THREE from 'three'
 import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
 
 import {
-  ControlsManagerInterface,
-  EventManagerInterface,
-  NodeStorageInterface
+  type ControlsManagerInterface,
+  type EventManagerInterface,
+  type NodeStorageInterface
 } from './interfaces'
 
 export class ControlsManager implements ControlsManagerInterface {

src/extensions/core/load3d/EventManager.ts

@@ -1,4 +1,4 @@
-import { EventCallback, EventManagerInterface } from './interfaces'
+import { type EventCallback, type EventManagerInterface } from './interfaces'
 
 export class EventManager implements EventManagerInterface {
   private listeners: { [key: string]: EventCallback[] } = {}

src/extensions/core/load3d/LightingManager.ts

@@ -1,6 +1,9 @@
 import * as THREE from 'three'
 
-import { EventManagerInterface, LightingManagerInterface } from './interfaces'
+import {
+  type EventManagerInterface,
+  type LightingManagerInterface
+} from './interfaces'
 
 export class LightingManager implements LightingManagerInterface {
   lights: THREE.Light[] = []

src/extensions/core/load3d/Load3d.ts

@@ -1,7 +1,7 @@
 import * as THREE from 'three'
 
 import { LGraphNode } from '@/lib/litegraph/src/litegraph'
-import { CustomInputSpec } from '@/schemas/nodeDef/nodeDefSchemaV2'
+import { type CustomInputSpec } from '@/schemas/nodeDef/nodeDefSchemaV2'
 
 import { CameraManager } from './CameraManager'
 import { ControlsManager } from './ControlsManager'
@@ -16,11 +16,11 @@ import { SceneManager } from './SceneManager'
 import { SceneModelManager } from './SceneModelManager'
 import { ViewHelperManager } from './ViewHelperManager'
 import {
-  CameraState,
-  CaptureResult,
-  Load3DOptions,
-  MaterialMode,
-  UpDirection
+  type CameraState,
+  type CaptureResult,
+  type Load3DOptions,
+  type MaterialMode,
+  type UpDirection
 } from './interfaces'
 
 class Load3d {