Permission asks from nested subagent sessions silently hang

[ro-hansolo]

Description

When a subagent spawns another subagent that requires permission (e.g. bash), the permission ask is emitted but never rendered in the TUI. The session hangs forever waiting for a response that never comes.
The children() memo in src/cli/cmd/tui/routes/session/index.tsx only collects direct child sessions. Permission and question events from grandchild sessions (sub-sub-agents) are never picked up.
Repro: have a general subagent spawn another general subagent that runs a bash command with "ask" permissions. The inner agent's permission request is invisible to the user.

Plugins

None

OpenCode version

1.2.4

Steps to reproduce

1. Set bash permissions to "ask" for the build agent
2. Send the prompt: Spawn a general subagent with this task: "Spawn another general subagent with this task: 'Run ls -la using bash and report the output.' Report back what it says."
3. The innermost general subagent requests bash permission but no prompt appears in the TUI. The session hangs indefinitely

Screenshot and/or share link

Screen.Recording.2026-02-15.at.3.58.30.PM.mov

Operating System

macOS 26.1 (25B77)

Terminal

Ghostty

[github-actions]

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This issue might be a duplicate of an existing issue. Please check:

• [BUG] Questions from nested sub-agents don't appear in TUI #7654: [BUG] Questions from nested sub-agents don't appear in TUI

Both issues appear to stem from the same root cause: the TUI only collects direct child sessions and misses events (permissions, questions) from grandchild sessions and deeper descendants. #7654 specifically mentions the same code location (children() memo in src/cli/cmd/tui/routes/session/index.tsx).

[feddericovonwernich]

I opened a PR with a minimal fix + regression coverage for this issue:

#21996

I also compiled and ran this locally, and I can confirm the nested prompt surfacing issue is fixed with these changes (permissions/questions from deeper subagent descendants now surface correctly).

I’d really appreciate getting this into mainline so I don’t have to maintain a fork to keep receiving updates.

Thank you all for the great work on OpenCode — this project is fantastic.

cc @thdxr @rekram1-node @adamdotdevin
Related: #7654