[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/groupNode.spec.ts

@@ -137,7 +137,9 @@ test.describe('Group Node', () => {
   test('Preserves hidden input configuration when containing duplicate node types', async ({
     comfyPage
   }) => {
-    await comfyPage.loadWorkflow('group_node_identical_nodes_hidden_inputs')
+    await comfyPage.loadWorkflow(
+      'groupnodes/group_node_identical_nodes_hidden_inputs'
+    )
     await comfyPage.nextFrame()
 
     const groupNodeId = 19
@@ -204,7 +206,7 @@ test.describe('Group Node', () => {
   test('Loads from a workflow using the legacy path separator ("/")', async ({
     comfyPage
   }) => {
-    await comfyPage.loadWorkflow('legacy_group_node')
+    await comfyPage.loadWorkflow('groupnodes/legacy_group_node')
     expect(await comfyPage.getGraphNodesCount()).toBe(1)
     await expect(
       comfyPage.page.locator('.comfy-missing-nodes')
@@ -213,7 +215,7 @@ test.describe('Group Node', () => {
 
   test.describe('Copy and paste', () => {
     let groupNode: NodeReference | null
-    const WORKFLOW_NAME = 'group_node_v1.3.3'
+    const WORKFLOW_NAME = 'groupnodes/group_node_v1.3.3'
     const GROUP_NODE_CATEGORY = 'group nodes>workflow'
     const GROUP_NODE_PREFIX = 'workflow>'
     const GROUP_NODE_NAME = 'group_node' // Node name in given workflow