[refactor] Organize all browser test assets into logical folders (#5058)

* move subgraph test assets into subfolder

* [refactor] Organize browser test assets into logical folders

Reorganized test assets for better maintainability:
- groupnodes/: GroupNode feature tests
- groups/: Visual grouping tests
- missing/: Missing nodes/models tests
- links/: Link-related tests
- inputs/: Input widget tests
- widgets/: Widget-specific tests
- nodes/: Node-related tests
- workflowInMedia/: Workflow media files

Updated all loadWorkflow references to use new folder structure.
Fixed programmatic filename references to prevent test failures.

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

Co-Authored-By: Claude <noreply@anthropic.com>

* [fix] Update mobile test to use new asset path

* [fix] Update remaining loadWorkflow calls to use new folder structure

* [fix] Fix remaining programmatic filename references

* [fix] Run prettier formatting

* [fix] Fix setupWorkflowsDirectory references to use correct folder paths

* [refactor] Rename subgraph folder to subgraphs for consistency

* [fix] Fix breadcrumb name in subgraph DOM widget test

* Update test expectations [skip ci]

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: github-actions <github-actions@github.com>

browser_tests/tests/nodeSearchBox.spec.ts

@@ -16,7 +16,7 @@ test.describe('Node search box', () => {
   })
 
   test(`Can trigger on group body double click`, async ({ comfyPage }) => {
-    await comfyPage.loadWorkflow('single_group_only')
+    await comfyPage.loadWorkflow('groups/single_group_only')
     await comfyPage.page.mouse.dblclick(50, 50, { delay: 5 })
     await comfyPage.nextFrame()
     await expect(comfyPage.searchBox.input).toHaveCount(1)
@@ -59,7 +59,7 @@ test.describe('Node search box', () => {
   })
 
   test('Can auto link batch moved node', async ({ comfyPage }) => {
-    await comfyPage.loadWorkflow('batch_move_links')
+    await comfyPage.loadWorkflow('links/batch_move_links')
 
     const outputSlot1Pos = {
       x: 304,
@@ -110,7 +110,7 @@ test.describe('Node search box', () => {
 
   test('@mobile Can trigger on empty canvas tap', async ({ comfyPage }) => {
     await comfyPage.closeMenu()
-    await comfyPage.loadWorkflow('single_ksampler')
+    await comfyPage.loadWorkflow('nodes/single_ksampler')
     const screenCenter = {
       x: 200,
       y: 400