AltJIT: attach failed (Not allowed to attach) when app has multiple PIDs; needs PID retry/selection

[khj1212k]

Environment

• macOS 26.3 (25D125)
• AltServer 1.7.2 (build 90) with bundled altjit
• iPadOS 26.2.1 (23C71)

Problem
AltJIT can fail with:
"Could not attach debugger ... Not allowed to attach to process".

In my case the app spawns multiple processes with the same name (ManicEmu). AltJIT sometimes picks a PID that denies attach, while another PID attaches fine and JIT is enabled.

Example output (PID redacted, but the key part is attach denial):

• Started debugserver on port ####
• Attaching debugger...
• (lldb) attach -p
• error: attach failed (Not allowed to attach to process)

Repro (happens frequently)

1. Connect iPad over USB, unlock it, open Manic EMU, keep it in the foreground.
2. Run: sudo /Applications/AltServer.app/Contents/MacOS/altjit enable "Manic EMU" --udid
3. AltJIT starts debugserver, then LLDB attach fails with "Not allowed to attach to process".
4. Listing processes shows multiple PIDs for ManicEmu:
   • python3 -m pymobiledevice3 processes pgrep --udid ManicEmu
5. Re-running altjit with the other PID succeeds:
   • sudo .../altjit enable <other_pid> --udid

Expected

• Enabling JIT by app name should be reliable.

Suggested fix

• When enabling by app name/bundle, enumerate candidate PIDs and retry attach if the first one is denied (newest PID first is often the right one).
• Alternatively, resolve the correct main app PID via SpringBoard/frontmost app/bundle id rather than a name match.
• If attach fails, show candidate PIDs in the error so users can recover.

[khj1212k]

Additional detail: here's an example failure log from AltJIT where the LLDB attach is denied for one of the app's PIDs.

Redacted output:

Connected to device <udid>! <addr> <rsd_port>
Started debugserver on port <debugserver_port>.
Attaching debugger...
(lldb) platform select remote-ios
  Platform: remote-ios
 Connected: no
  SDK Path: error: unable to locate SDK
(lldb) process connect connect://[<addr>]:<debugserver_port>
(lldb) settings set target.memory-module-load-level minimal
(lldb) attach -p 26040
error: attach failed (Not allowed to attach to process ...)

On the same run, listing processes shows multiple ManicEmu PIDs; retrying altjit enable <other_pid> succeeds.

This is why it would help if AltJIT retried attach across candidate PIDs (newest first) when enabling by app name/bundle.