[Bug]: OpenCode question asked before T3's continuation run starts is never shown and blocks the thread #32430

Before submitting

• I searched existing issues and did not find a duplicate. (A turn with no path to a terminal event: Pi's settle probe never re-arms, OpenCode drops unresolvable child asks #16846 is related: child asks abandoned after retries. This is a top-level session's ask that is never shown at all.)
• I included enough detail to reproduce or investigate the problem.

Area

• apps/server (packages/provider-opencode)

Steps to reproduce

1. An OpenCode thread is idle; one of its background subagents finishes.
2. OpenCode wakes the parent session by itself (the subagent report starts a turn) before T3 dispatches its continuation run.
3. In that turn's first step the model calls question.

Expected behavior

T3 shows the question once its continuation run starts, or cancels the form so the turn can end.

Actual behavior

onAsked in packages/provider-opencode/src/server/v2/adapter.ts gets form.created while requestTurn(sessionID) is undefined and the session isn't unsettled, so it returns without showing or stopping the form. The continuation run starts 30–40 s later, but nothing looks at the open form again (reconcile re-lists forms only after an event-stream reconnect). The form stays pending in OpenCode, the run stays "running", and later subagent reports and the user's own messages wait in OpenCode's inbox behind it.

Seen once on nightly 0.1.7-nightly.20261103.4119: form created 13:53:17 UTC, the subagent report that woke the session at 13:53:01, T3's continuation runs created 13:53:54–13:53:55 (dispatch took 5.9 s, no stall). No pending request in T3 for 3 h 17 min until the form was cancelled through OpenCode's API by hand. The same thread's 9 other questions that week came inside T3 runs and were shown. The code path is unchanged on main (83a3674).

Impact

Major degradation or frequent failure: rare, but the thread is stuck with no visible reason until someone cancels the form outside T3.

Version or commit

0.1.7-nightly.20261103.4119; same code on main 83a3674

Environment

Linux (NixOS), OpenCode 2.2.5 server started by T3, Cursor models through cursor-opencode-provider.

Logs or stack traces

T3's trace has no span mentioning the form id; the run and continuation spans around 13:53 are normal. Possible fix: when a turn starts for a session, list its open forms and permissions (as reconcile does) and show any T3 hasn't shown, or stop asks that arrive with no turn instead of ignoring them.

Found with Claude Opus 5.5 in OpenCode (T3 audit thread).