Centralized management of external links (#4471)

Update the desktop guide links to make them platform and locale-aware

Edited by Terry:
Refactor external link management by introducing a centralized
useExternalLink composable with automatic locale and platform detection
for documentation URLs.

- Created useExternalLink composable - A new centralized utility for
managing all external links
- Dynamic docs URL builder (buildDocsUrl) - Automatically constructs
docs.comfy.org URLs with:
  - Locale detection (Chinese vs English)
  - Platform detection (macOS vs Windows for desktop)
  - Flexible path construction with options

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-4471-Add-platform-and-locale-aware-desktop-guide-URL-2346d73d3650815ea4a4dd64be575bbe)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Terry Jia <terryjia88@gmail.com>

src/workbench/extensions/manager/components/manager/ManagerDialogContent.vue

@@ -142,6 +142,7 @@ import ContentDivider from '@/components/common/ContentDivider.vue'
 import NoResultsPlaceholder from '@/components/common/NoResultsPlaceholder.vue'
 import VirtualGrid from '@/components/common/VirtualGrid.vue'
 import { useResponsiveCollapse } from '@/composables/element/useResponsiveCollapse'
+import { useExternalLink } from '@/composables/useExternalLink'
 import { useComfyRegistryStore } from '@/stores/comfyRegistryStore'
 import type { components } from '@/types/comfyRegistryTypes'
 import ManagerNavSidebar from '@/workbench/extensions/manager/components/manager/ManagerNavSidebar.vue'
@@ -165,6 +166,7 @@ const { initialTab } = defineProps<{
 }>()
 
 const { t } = useI18n()
+const { buildDocsUrl } = useExternalLink()
 const comfyManagerStore = useComfyManagerStore()
 const { getPackById } = useComfyRegistryStore()
 const conflictAcknowledgment = useConflictAcknowledgment()
@@ -356,7 +358,9 @@ watch([isAllTab, searchResults], () => {
 
 const onClickWarningLink = () => {
   window.open(
-    'https://docs.comfy.org/troubleshooting/custom-node-issues',
+    buildDocsUrl('/troubleshooting/custom-node-issues', {
+      includeLocale: true
+    }),
     '_blank'
   )
 }

src/workbench/extensions/manager/components/manager/NodeConflictFooter.vue

@@ -26,6 +26,7 @@
 <script setup lang="ts">
 import Button from 'primevue/button'
 
+import { useExternalLink } from '@/composables/useExternalLink'
 import { useDialogStore } from '@/stores/dialogStore'
 
 interface Props {
@@ -36,10 +37,13 @@ const props = withDefaults(defineProps<Props>(), {
   buttonText: undefined,
   onButtonClick: undefined
 })
+const { buildDocsUrl } = useExternalLink()
 const dialogStore = useDialogStore()
 const handleConflictInfoClick = () => {
   window.open(
-    'https://docs.comfy.org/troubleshooting/custom-node-issues',
+    buildDocsUrl('/troubleshooting/custom-node-issues', {
+      includeLocale: true
+    }),
     '_blank'
   )
 }