bug: profile deletion competes with background paykit work #1511

Twin: synonymdev/bitkit-ios#955
Refs:

• [Bug]: Pubky private-session recovery remains blocked after restart (shared_state_busy) #1453
• [Bug]: Continue on Let your contacts pay you does not finish #1406
• profile deletion makes ~100 sequential homeserver requests pubky/paykit-rs#197
• profile deletion takes ~50 s and repeats endpoint cleanup #1522

What happened?

While a profile is being deleted, Paykit keeps doing its automatic work: publishing payment endpoints, refreshing contacts, importing Shop sellers and taking in payment requests. That work competes with the deletion's own cleanup, which slows deletion down, and a paid public invoice can be published again if the deletion fails.

Expected behavior

Deleting a profile pauses automatic Paykit work until the deletion ends, lets work already started finish, and resumes it if the profile is kept. A paid invoice is never published again.

Steps to Reproduce

1. Sign in to a Pubky profile with many contacts (for example 62).
2. Open Profile → Edit → Delete Profile and confirm.
3. Watch deletion run while contact refreshes and endpoint publication continue in the background.

Logs / Screenshots / Recordings

N/A

Bitkit Version

3.0.0 RC2 (current master)

Device / OS

Android

Reproducibility

Always