[Bug]: iOS: a file shared into a new task isn't visible in the composer until the message is sent #21651

Before submitting

• I searched existing issues and did not find a duplicate.
• I included enough detail to reproduce or investigate the problem.

Area

apps/mobile

Steps to reproduce

1. In the iOS Files app, share a non-image file to T3 Code. (Earlier cases were a .json backup shared from inside the app that created it and a .zip of swim meet results containing a .hy3 file.)
2. T3 Code opens "Start a task." Choose Start without a project.
3. Look at the new-task composer.
4. Swipe the sheet closed without sending.

I reproduced this again on purpose with a fresh share from Files, and got the same result.

Expected behavior

The shared file appears in the composer's attachment strip (with the file icon), so I can see and remove it before sending.

Actual behavior

• The composer showed no attachment. I couldn't tell anything was attached.
• After I closed the sheet, the Threads list showed it under Unsent as "No project · Draft · 1 attachment." That was the only sign of the file.
• Reopening that draft from Unsent still shows no attachment in the composer. The file is never visible or removable before sending; I only saw it after sending a message.
• I only saw the file after I sent the message.

Impact

Minor bug or occasional failure. You can't see or remove a file before it's sent. Combined with the loop below, I didn't know a file was stuck at all.

Version or commit

iOS app 2.0.0 (App Store). Desktop/server 0.1.1-nightly.20261016.3190.

Environment

iPhone 16 Pro, iOS 26.6.1.

Related

Before this, the shared item kept reopening "Start a task" on every cold launch, even after I dismissed it, for days, without showing what had been shared. Once I cleared it by choosing a project, an older share (a .zip from over a week earlier) started popping up the same way. That looks like what #11488 fixes, so I'm not filing it separately. I've added a note there.