[refactor] Migrate manager code to DDD structure (#5662)

## Summary

Reorganized custom nodes manager functionality from scattered technical
layers into a cohesive domain-focused module following [domain-driven
design](https://en.wikipedia.org/wiki/Domain-driven_design) principles.

## Changes

- **What**: Migrated all manager code from technical layers
(`src/components/`, `src/stores/`, etc.) to unified domain structure at
`src/workbench/extensions/manager/`
- **Breaking**: Import paths changed for all manager-related modules
(40+ files updated)

## Review Focus

Verify all import path updates are correct and no circular dependencies
introduced. Check that [Vue 3 composition
API](https://vuejs.org/guide/reusability/composables.html) patterns
remain consistent across relocated composables.


┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5662-refactor-Migrate-manager-code-to-DDD-structure-2736d73d3650812c87faf6ed0fffb196)
by [Unito](https://www.unito.io)

src/composables/nodePack/useInstalledPacks.ts

@@ -2,9 +2,9 @@ import { whenever } from '@vueuse/core'
 import { computed, onUnmounted, ref } from 'vue'
 
 import { useNodePacks } from '@/composables/nodePack/useNodePacks'
-import { useComfyManagerStore } from '@/stores/comfyManagerStore'
-import type { UseNodePacksOptions } from '@/types/comfyManagerTypes'
 import type { components } from '@/types/comfyRegistryTypes'
+import { useComfyManagerStore } from '@/workbench/extensions/manager/stores/comfyManagerStore'
+import type { UseNodePacksOptions } from '@/workbench/extensions/manager/types/comfyManagerTypes'
 
 export const useInstalledPacks = (options: UseNodePacksOptions = {}) => {
   const comfyManagerStore = useComfyManagerStore()

src/composables/nodePack/useMissingNodes.ts

@@ -5,10 +5,10 @@ import { useWorkflowPacks } from '@/composables/nodePack/useWorkflowPacks'
 import type { NodeProperty } from '@/lib/litegraph/src/LGraphNode'
 import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
 import { app } from '@/scripts/app'
-import { useComfyManagerStore } from '@/stores/comfyManagerStore'
 import { useNodeDefStore } from '@/stores/nodeDefStore'
 import type { components } from '@/types/comfyRegistryTypes'
 import { collectAllNodes } from '@/utils/graphTraversalUtil'
+import { useComfyManagerStore } from '@/workbench/extensions/manager/stores/comfyManagerStore'
 
 /**
  * Composable to find missing NodePacks from workflow

src/composables/nodePack/useNodePacks.ts

@@ -2,7 +2,7 @@ import { get, useAsyncState } from '@vueuse/core'
 import type { Ref } from 'vue'
 
 import { useComfyRegistryStore } from '@/stores/comfyRegistryStore'
-import type { UseNodePacksOptions } from '@/types/comfyManagerTypes'
+import type { UseNodePacksOptions } from '@/workbench/extensions/manager/types/comfyManagerTypes'
 
 /**
  * Handles fetching node packs from the registry given a list of node pack IDs

src/composables/nodePack/usePackUpdateStatus.ts

@@ -1,8 +1,8 @@
 import { computed } from 'vue'
 
-import { useComfyManagerStore } from '@/stores/comfyManagerStore'
 import type { components } from '@/types/comfyRegistryTypes'
 import { compareVersions, isSemVer } from '@/utils/formatUtil'
+import { useComfyManagerStore } from '@/workbench/extensions/manager/stores/comfyManagerStore'
 
 export const usePackUpdateStatus = (
   nodePack: components['schemas']['Node']

src/composables/nodePack/usePacksSelection.ts

@@ -1,7 +1,7 @@
 import { type Ref, computed } from 'vue'
 
-import { useComfyManagerStore } from '@/stores/comfyManagerStore'
 import type { components } from '@/types/comfyRegistryTypes'
+import { useComfyManagerStore } from '@/workbench/extensions/manager/stores/comfyManagerStore'
 
 type NodePack = components['schemas']['Node']
 

src/composables/nodePack/useUpdateAvailableNodes.ts

@@ -1,9 +1,9 @@
 import { computed, onMounted } from 'vue'
 
 import { useInstalledPacks } from '@/composables/nodePack/useInstalledPacks'
-import { useComfyManagerStore } from '@/stores/comfyManagerStore'
 import type { components } from '@/types/comfyRegistryTypes'
 import { compareVersions, isSemVer } from '@/utils/formatUtil'
+import { useComfyManagerStore } from '@/workbench/extensions/manager/stores/comfyManagerStore'
 
 /**
  * Composable to find NodePacks that have updates available

src/composables/nodePack/useWorkflowPacks.ts

@@ -7,9 +7,9 @@ import { app } from '@/scripts/app'
 import { useComfyRegistryStore } from '@/stores/comfyRegistryStore'
 import { useNodeDefStore } from '@/stores/nodeDefStore'
 import { useSystemStatsStore } from '@/stores/systemStatsStore'
-import type { UseNodePacksOptions } from '@/types/comfyManagerTypes'
 import type { components } from '@/types/comfyRegistryTypes'
 import { collectAllNodes } from '@/utils/graphTraversalUtil'
+import type { UseNodePacksOptions } from '@/workbench/extensions/manager/types/comfyManagerTypes'
 
 type WorkflowPack = {
   id: