fix(files): sync materialized display names

Author: j15z

apps/sim/lib/copilot/tools/handlers/materialize-file.test.ts

@@ -325,7 +325,11 @@ describe('executeMaterializeFile - save storage transition', () => {
       null
     )
     expect(dbChainMockFns.set).toHaveBeenCalledWith(
-      expect.objectContaining({ context: 'workspace', originalName: 'image (1).png' })
+      expect.objectContaining({
+        context: 'workspace',
+        originalName: 'image (1).png',
+        displayName: 'image (1).png',
+      })
     )
     expect(result.resources).toEqual([{ type: 'file', id: 'file-1', title: 'image (1).png' }])
   })

apps/sim/lib/copilot/tools/handlers/materialize-file.ts

@@ -139,6 +139,7 @@ async function executeSave(
             chatId: null,
             messageId: null,
             originalName: materializedName,
+            displayName: materializedName,
             size: verifiedSize,
           })
           .where(