Permission dialogs not rendered: backend blocks on invisible prompts, app appears frozen

Summary

Permission prompts are generated by the backend but the dialog is never rendered to the user. 3270 prompts were created over 27 days — the user never saw any of them. Backend blocked waiting for answers that could never arrive.

Evidence

• 3270 prompts in 27 days, zero user responses
• 10 of 54 sessions ended with an unanswered prompt as the last log line
• Longest stall: 7 days with hanging prompt
• During stalls: backend completely idle (zero log lines), not working, not retrying — just waiting
• Both tabs resumed within 2 seconds when someone accidentally triggered a response
• No error in renderer logs, no crash dumps, no "Not Responding" dialog

How to reproduce

1. Set opencode.json to "*": "ask" for bash
2. Run any command that triggers a bash permission check
3. Dialog may or may not appear — inconsistent behavior

Impact

• App appears frozen
• User force-restarts, losing session state
• Same prompts repeat after restart (persistence also broken)
• Hours of productive time lost to stalls

Version: 1.18.16, Electron 42.3.3, Windows 10