[turinglambdaai]

Bug

CommitQuickAdd() cleared NewTaskBox before checking backend readiness and before async parsing/persistence finished. A disconnected backend, parse error, or save error discarded the user's unsent task content.

Fix

• Reject blank/whitespace-only or disconnected submissions without clearing the draft.
• Capture submitted text through the async parse and save callbacks.
• Restore that draft on parse/save failure only if the field is still empty: never overwrite a newer draft that the user started typing while the RPC was pending.
• Keep current successful-submit behavior and error reporting unchanged.

Verification before merging

• Windows host CI builds
• With backend disconnected, Enter does not clear input
• Parse/save RPC failure restores submitted text and shows error
• If user has begun typing a new draft, failed old submission never overwrites it
• Successful quick add still clears the input and creates one task
• macOS/Linux unaffected; validate shared cross-platform behavior contract

Independent small fix; no merging or release until all pending work is tested.