[juliusmarminge]

Problem

Native nested background work can remain queued after a root turn ends, while ingestion sees only the adapter's newer idle state. Ordered pending-work state is needed to retain the queued continuation.

Change

Publish optional pending-work snapshots in stream order and refresh ancestors after settlement, cancellation, reconciliation, and wake replay. Descendants refresh before ancestors. The consumer is #21461.

Scope and approval

Fixes #19228
GitCafe: https://git.cafe/pingdotgg/t3code/issues/19228
Triaged bug via the automated issue flow. Preserves the existing dependency layer of the maintainer takeover of #19388. Main is merged into this branch; no history was rewritten.

Verification

Independent follow-up proof audit: SUFFICIENT; publication and tested trees match.

• Baseline main 8d3b061121: both ownership variants drop all queued child events. Original red proof.
• Wake-replay regression: a session holds a wake while top-level, becomes another session's child, and consumes the wake. Without ancestor refresh, its caller remains pending (expected true to be false); with the fix, both snapshots clear. Red | Green.
• Final code passes 250 tests across the service, adapter, and OpenCode package suites, plus all 22 replay fixtures. The focused service/adapter/replay subset is 149 tests. Scoped log | Replay log. Server and OpenCode package typechecks and targeted lint pass.
• Two fresh independent reviewers, GPT-6.1 Sol and Claude Opus 5.5, returned MERGE for the ancestor correction. The earlier transfer cleanup remains covered, including independent pending siblings and subscription release after drain.
• Real isolated web dev app on Linux fs-05, OpenCode 2.0.32, opencode/deepseek-v4.1-flash-free, subagent_depth=2, committed nested-background fixture prompt: root completes at 10:47:30.082, grandchild output persists at 10:47:59.653, middle continuation runs at 10:47:59.743 and completes at 10:48:02.173. Final thread snapshots are idle with empty pending tasks. Ordered final-code runtime.
• Tested 587227c136 and published top 31b509cecc have identical trees, including dependency 4cc74410d2. Revision and scope manifest.
• Baseline live runs also succeeded: runtime evidence establishes compatibility; deterministic tests establish the races. Live ownership-loss, restart, and the reused-root held-wake edge were not exercised. The latter is covered by the adapter regression. The direct takeRunningWake counterpart lacks its own test; both replay sites use the same correction. Service tests, rather than UI idle state, prove subscription release and exclude an after-drain sentinel.
• Server-only change: visual fixture matrix is empty; no rendered UI changed.

Models: GPT-6.1 Sol and Claude Opus 5.5, Codex/Claude harnesses through T3 Code.

Evidence

The earlier runtime and proof evidence above (captured at 1439b2b34e and before) is superseded by this section. It predates 4cc74410d2 (ancestor refresh after wake replay).

Code under proof: 4cc74410d2. Before: merge-base 8d3b061121. The driver is committed as 9b97de29a6 (apps/server/src/orchestration-v2/testkit/OpenCode2PendingSnapshots.evidence.test.ts, evidence only, no product code).

Mode: the real OrchestratorV2 (orchestrator, event sink, projections, effect worker; in-memory SQLite) replays recorded OpenCode 2 fixtures through the testkit fake. This is not a running bin.ts server and not live OpenCode: the local OpenCode is 1.18.18 with no credentials, and the v2 adapter needs 2.x. At this head the server drops the pendingBackgroundWork flag (ProviderEventIngestor.ts:565); its consumer is the stacked #21461.

row	stimulus	before (8d3b061)	after (4cc7441)
R1	opencode2_nested_background: root turn ends while a background grandchild's report is queued for the middle session	FAIL: no snapshot, and the middle session never lists the grandchild	PASS: true while the report is queued; the middle continuation runs; false only after the middle's turn 2 completes
R2	held wake replayed after the session is called as a child (target of 4cc7441)	FAIL	PASS; with only the two syncRosterAncestors lines removed, it fails at :1421 (the caller stays true)
R2b	nested report cancelled during a held wake	FAIL	PASS
R2c	opencode2_resume_after_restart, opencode2_interrupt (compatibility)	PASS	PASS
R3	opencode2_simple, opencode2_tool_call: no pending work	PASS	PASS (unchanged)

Matrix · Summary · Transcript before · Transcript after · Named tests: after / minus two lines / before · Red diff · Audit

Verification log

• Environment: Linux VM fs-33, Node v24.21.0, OpenCode 1.18.18 (not used; recorded fixtures), driver run with vp test run from apps/server.
• What else changed between before and after: the adapter test file (OpenCode2AdapterV2.test.ts), one optional pendingBackgroundWork field in provider-core/src/server/ProviderAdapter.ts, and the evidence driver.
• Reviews of 4cc7441: Claude Sonnet 5.5: MERGE. Claude Opus 5.5: MERGE. Neither touches auth, permissions, modes, sandboxing, trust or MCP. Non-blocking notes: (1) the descendant loop follows insertion order, not depth, so a re-parented session can emit an ancestor update before a descendant's (values are still correct); (2) a previous caller is not refreshed when a session is called by a new caller. Both predate this commit.
• Proof audits: pass 1 derived the matrix; pass 2: SUFFICIENT, with an independent rebuild at 9b97de2 identical to the capture.
• Tests at 4cc7441: OpenCode2AdapterV2.test.ts 80/80; adapter + OpenCodeReplayFixtures.integration.test.ts 102/102 (log); packages/provider-opencode 123/123. Driver lint and apps/server typecheck pass (typecheck, lint).
• CI: green on 4cc7441; on 9b97de2 27/28 passed with Build and Typecheck still pending at the time of writing. Lands through its stack.
• Unverified: a live OpenCode 2 run (no 2.x or credentials on this machine); a running server observing the flag (dropped at this head; belongs to https://git.cafe/pingdotgg/t3code/pulls/21461); the takeRunningWake site (adapter.ts:3287) alone (only runWake has its own test; same one-line change); R2c reconcile and wake-discard updates (compatibility replays only).
• Models/harness: Claude Opus 5.5 (lead, capture, audits, review B) and Claude Sonnet 5.5 (review A), Claude Code through T3 Code.

[macroscopeapp]

Approvability

Verdict: Approved at 9b97de2

Macroscope's review found this PR approvable — This is a contained OpenCode server bug fix that adds optional pending-work metadata and orders descendant-to-ancestor snapshots without changing existing stored data or defaults. Targeted tests cover nested continuations, cancellation, wake replay, and fixture replays.

Notes:

• No code objects were reviewed. Approvability was decided on eligibility alone.

^{You can add or adjust custom eligibility rules. Learn more.}

[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	4.9 KiB	5.0 KiB	+30 B (+0.6%)	6.8 KiB	✅
Codex	Thread snapshot wire	3.8 KiB	3.8 KiB	0 B (0.0%)	4.9 KiB	✅
Codex	Live turn WebSocket wire	1.2 KiB	1.2 KiB	+30 B (+2.5%)	2.0 KiB	✅
Codex	Live turn WebSocket decoded	20.8 KiB	20.9 KiB	+41 B (+0.2%)	29.3 KiB	✅
Codex	Live turn messages	1	2	+1 (+100.0%)	8	✅
Claude	Total thread wire	5.0 KiB	5.0 KiB	0 B (0.0%)	6.8 KiB	✅
Claude	Thread snapshot wire	3.8 KiB	3.8 KiB	0 B (0.0%)	4.9 KiB	✅
Claude	Live turn WebSocket wire	1.2 KiB	1.2 KiB	0 B (0.0%)	2.0 KiB	✅
Claude	Live turn WebSocket decoded	21.2 KiB	21.2 KiB	0 B (0.0%)	29.3 KiB	✅
Claude	Live turn messages	2	2	0 (0.0%)	8	✅

Baseline: 8d3b061 · PR result: 9b97de2 · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 108.5 KiB
• Claude decoded thread snapshot: 108.8 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.

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Reviewing files that changed from the base of the PR and between 1439b2b and 4cc7441.

📒 Files selected for processing: 2

• apps/server/src/orchestration-v2/Adapters/OpenCode2AdapterV2.test.ts
• packages/provider-opencode/src/server/v2/adapter.ts

🚧 Files skipped from review as they are similar to previous changes: 2

• apps/server/src/orchestration-v2/Adapters/OpenCode2AdapterV2.test.ts
• packages/provider-opencode/src/server/v2/adapter.ts

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📝 Walkthrough

Provider thread updates now include whether background work remains. The adapter synchronizes nested thread rosters and propagates this status through ancestors. Tests cover nested continuations, cancellation, and durable event envelopes with configurable versions.

Changes: Background work status

Layer / File(s)	Summary
Publish background-work status packages/provider-core/src/server/ProviderAdapter.ts, packages/provider-opencode/src/server/v2/adapter.ts	The provider event schema adds optional pendingBackgroundWork. The adapter records and publishes this value with provider-thread updates.
Synchronize nested thread rosters packages/provider-opencode/src/server/v2/adapter.ts	Roster synchronization propagates background-work changes through affected threads and ancestors after lifecycle, stream, reconciliation, wake, and shutdown operations.
Verify nested continuation status apps/server/src/orchestration-v2/Adapters/OpenCode2AdapterV2.test.ts	Tests record pending-work snapshots during nested continuations and cancellation. The event helper constructs durable envelopes with configurable versions.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant BackgroundEvents
  participant OpenCodeAdapter
  participant ThreadAncestors
  participant ProviderThreadUpdates
  BackgroundEvents->>OpenCodeAdapter: Execution, inbox, wake, reconciliation, or shutdown event
  OpenCodeAdapter->>ThreadAncestors: Synchronize affected thread rosters
  OpenCodeAdapter->>ProviderThreadUpdates: Emit pendingBackgroundWork status

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Possibly related issues

• Queued native child continuation output is dropped after root completion #19228: The issue describes queued child continuations that can produce output after root completion; this change publishes pending-work snapshots and synchronizes ancestor rosters during nested background work.

Suggested reviewers: yash-singh1

Merge Risk: ⚪ Minimal · up to 4cc74

No actionable merge-blocking risk remains for this PR after normal checks.

Pre-merge checks: 4

Check name	Status	Explanation
Title check		The title clearly and concisely describes the main change: publishing ordered pending-work snapshots for OpenCode.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description check		The pull request description is complete and follows the repository template. It explains the problem, the implementation, scope and approval, focused verification, known limitations, test results, ru…

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Explanation

The pull request description is complete and follows the repository template. It explains the problem, the implementation, scope and approval, focused verification, known limitations, test results, runtime evidence, and the models and harness used.

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Actionable comments posted: 1

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Inline comments:
Review comments at @packages/provider-opencode/src/server/v2/adapter.ts:
- Line 3159: In the wake-replay flow, refresh descendant roster snapshots before
calling syncRosterAncestors(state): use the same descendant-refresh logic as
reconcile, iterating sessionsOf(state) in reverse and calling syncRoster for
each session so replayed child events update published pendingBackgroundWork
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Actionable comments posted: 1

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Inline comments:
Review comments at @packages/provider-opencode/src/server/v2/adapter.ts:
- Line 3286: After each descendant refresh in both replay paths, call
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Update the loops using syncRoster(session) around the replayed state while
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[juliusmarminge]

Fixed in 4cc74410d2. Both wake-replay paths now refresh ancestors after descendants. The regression reproduces a held-wake session becoming a child: its caller remained pending before the fix and clears afterward. Red assertion, green result. All 272 scoped tests pass; both fresh reviewers approved the correction.

Dismissing prior approval to re-evaluate 9b97de2