fix(mothership): tool path for nested folders (#4158)

apps/sim/app/workspace/[workspaceId]/home/hooks/use-chat.ts

@@ -673,7 +673,10 @@ function extractResourceFromReadResult(
 ): MothershipResource | null {
   if (!path) return null
 
-  const segments = path.split('/')
+  const segments = path
+    .split('/')
+    .map((segment) => segment.trim())
+    .filter(Boolean)
   const resourceType = VFS_DIR_TO_RESOURCE[segments[0]]
   if (!resourceType || !segments[1]) return null
 
@@ -693,8 +696,22 @@ function extractResourceFromReadResult(
     }
   }
 
+  const fallbackTitle =
+    resourceType === 'workflow'
+      ? resolveLeafWorkflowPathSegment(segments)
+      : segments[1] || segments[segments.length - 1]
+
   if (!id) return null
-  return { type: resourceType, id, title: name || segments[1] }
+  return { type: resourceType, id, title: name || fallbackTitle || id }
+}
+
+function resolveLeafWorkflowPathSegment(segments: string[]): string | undefined {
+  const lastSegment = segments[segments.length - 1]
+  if (!lastSegment) return undefined
+  if (/\.[^/.]+$/.test(lastSegment) && segments.length > 1) {
+    return segments[segments.length - 2]
+  }
+  return lastSegment
 }
 
 export interface UseChatOptions {

apps/sim/lib/copilot/tools/client/store-utils.test.ts

@@ -29,6 +29,12 @@ describe('resolveToolDisplay', () => {
         path: 'workflows/My Workflow/meta.json',
       })?.text
     ).toBe('Read My Workflow')
+
+    expect(
+      resolveToolDisplay(ReadTool.id, ClientToolCallState.success, {
+        path: 'workflows/Folder 1/RET XYZ/state.json',
+      })?.text
+    ).toBe('Read RET XYZ')
   })
 
   it('falls back to a humanized tool label for generic tools', () => {

apps/sim/lib/copilot/tools/client/store-utils.ts

@@ -98,10 +98,26 @@ function describeReadTarget(path: string | undefined): string | undefined {
     return segments.slice(1).join('/') || segments[segments.length - 1]
   }
 
+  if (resourceType === 'workflow') {
+    return stripExtension(getLeafResourceSegment(segments))
+  }
+
   const resourceName = segments[1] || segments[segments.length - 1]
   return stripExtension(resourceName)
 }
 
+function getLeafResourceSegment(segments: string[]): string {
+  const lastSegment = segments[segments.length - 1] || ''
+  if (hasFileExtension(lastSegment) && segments.length > 1) {
+    return segments[segments.length - 2] || lastSegment
+  }
+  return lastSegment
+}
+
+function hasFileExtension(value: string): boolean {
+  return /\.[^/.]+$/.test(value)
+}
+
 function stripExtension(value: string): string {
   return value.replace(/\.[^/.]+$/, '')
 }