diff --git a/src/components/dialog/content/ConfirmationDialogContent.vue b/src/components/dialog/content/ConfirmationDialogContent.vue
index 556379b3f..32e147d49 100644
--- a/src/components/dialog/content/ConfirmationDialogContent.vue
+++ b/src/components/dialog/content/ConfirmationDialogContent.vue
@@ -99,7 +99,7 @@ import { useI18n } from 'vue-i18n'
 
 import Button from '@/components/ui/button/Button.vue'
 import { useSettingStore } from '@/platform/settings/settingStore'
-import type { ConfirmationDialogType } from '@/services/dialogService'
+import type { ConfirmationDialogType } from '@/services/dialogTypes'
 import { useDialogStore } from '@/stores/dialogStore'
 
 const props = defineProps<{
diff --git a/src/components/queue/job/useJobErrorReporting.ts b/src/components/queue/job/useJobErrorReporting.ts
index b008238a6..c1a3f9148 100644
--- a/src/components/queue/job/useJobErrorReporting.ts
+++ b/src/components/queue/job/useJobErrorReporting.ts
@@ -1,7 +1,7 @@
 import { computed } from 'vue'
 import type { ComputedRef } from 'vue'
 
-import type { ExecutionErrorDialogInput } from '@/services/dialogService'
+import type { ExecutionErrorDialogInput } from '@/services/dialogTypes'
 import type { TaskItemImpl } from '@/stores/queueStore'
 
 type CopyHandler = (value: string) => void | Promise<void>
diff --git a/src/lib/litegraph/constants.ts b/src/lib/litegraph/constants.ts
new file mode 100644
index 000000000..1a4299010
--- /dev/null
+++ b/src/lib/litegraph/constants.ts
@@ -0,0 +1,14 @@
+/**
+ * Symbols used for widget configuration in litegraph nodes.
+ * Extracted to break circular dependencies between litegraphService and extensions.
+ */
+
+/**
+ * Symbol used to access the config object on a widget.
+ */
+export const CONFIG = Symbol('CONFIG')
+
+/**
+ * Symbol used to access the config getter function on a widget.
+ */
+export const GET_CONFIG = Symbol('GET_CONFIG')
diff --git a/src/services/dialogService.ts b/src/services/dialogService.ts
index 3154c54d6..1209f7c40 100644
--- a/src/services/dialogService.ts
+++ b/src/services/dialogService.ts
@@ -34,26 +34,15 @@ import NodeConflictHeader from '@/workbench/extensions/manager/components/manage
 import type { ConflictDetectionResult } from '@/workbench/extensions/manager/types/conflictDetectionTypes'
 import type { ComponentAttrs } from 'vue-component-type-helpers'
 
-export type ConfirmationDialogType =
-  | 'default'
-  | 'overwrite'
-  | 'overwriteBlueprint'
-  | 'delete'
-  | 'dirtyClose'
-  | 'reinstall'
-  | 'info'
+import type {
+  ConfirmationDialogType,
+  ExecutionErrorDialogInput
+} from './dialogTypes'
 
-/**
- * Minimal interface for execution error dialogs.
- * Satisfied by both ExecutionErrorWsMessage (WebSocket) and ExecutionError (Jobs API).
- */
-export interface ExecutionErrorDialogInput {
-  exception_type: string
-  exception_message: string
-  node_id: string | number
-  node_type: string
-  traceback: string[]
-}
+export type {
+  ConfirmationDialogType,
+  ExecutionErrorDialogInput
+} from './dialogTypes'
 
 export const useDialogService = () => {
   const dialogStore = useDialogStore()
diff --git a/src/services/dialogTypes.ts b/src/services/dialogTypes.ts
new file mode 100644
index 000000000..2b1094c65
--- /dev/null
+++ b/src/services/dialogTypes.ts
@@ -0,0 +1,25 @@
+/**
+ * Type definitions for dialog service.
+ * Extracted to break circular dependencies between dialogService and dialog components.
+ */
+
+export type ConfirmationDialogType =
+  | 'default'
+  | 'overwrite'
+  | 'overwriteBlueprint'
+  | 'delete'
+  | 'dirtyClose'
+  | 'reinstall'
+  | 'info'
+
+/**
+ * Minimal interface for execution error dialogs.
+ * Satisfied by both ExecutionErrorWsMessage (WebSocket) and ExecutionError (Jobs API).
+ */
+export interface ExecutionErrorDialogInput {
+  exception_type: string
+  exception_message: string
+  node_id: string | number
+  node_type: string
+  traceback: string[]
+}