PR #24579 real-environment verification, 2026-10-30 UTC
No mocked providers, replay data, fixtures, telemetry edits, or source changes. Projects, provider settings and all messages created through the web UI with repository Playwright and /usr/bin/google-chrome.

github/main 44d508fd8b
read-only persisted run, model, native identity, and token-usage queries:
[
  {
    "ordinal": 1,
    "status": "completed",
    "model": {
      "instanceId": "codex",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a77-c32d-7193-a04f-2bf69c9d52a1",
    "usage": {
      "usedTokens": 16242,
      "maxTokens": 258400,
      "inputTokens": 16231,
      "cachedInputTokens": 9216,
      "outputTokens": 11,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:41:23.430Z"
    }
  },
  {
    "ordinal": 2,
    "status": "completed",
    "model": {
      "instanceId": "codex_codex_b",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a78-b1c2-76a2-b6cc-d18038e7b66e",
    "usage": {
      "usedTokens": 17063,
      "maxTokens": 258400,
      "inputTokens": 17053,
      "cachedInputTokens": 9216,
      "outputTokens": 10,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:42:32.248Z"
    }
  },
  {
    "ordinal": 3,
    "status": "completed",
    "model": {
      "instanceId": "codex",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a79-9d38-71b1-a4db-2f860600f754",
    "usage": {
      "usedTokens": 17425,
      "maxTokens": 258400,
      "inputTokens": 17415,
      "cachedInputTokens": 9216,
      "outputTokens": 10,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:43:22.296Z"
    }
  },
  {
    "ordinal": 4,
    "status": "completed",
    "model": {
      "instanceId": "codex_codex_b",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a7a-d515-7732-9755-8c544d0056da",
    "usage": {
      "usedTokens": 17815,
      "maxTokens": 258400,
      "inputTokens": 17805,
      "cachedInputTokens": 0,
      "outputTokens": 10,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:44:43.058Z"
    }
  },
  {
    "ordinal": 5,
    "status": "completed",
    "model": {
      "instanceId": "codex",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a79-9d38-71b1-a4db-2f860600f754",
    "usage": {
      "usedTokens": 18217,
      "maxTokens": 258400,
      "inputTokens": 18207,
      "cachedInputTokens": 9216,
      "outputTokens": 10,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:45:09.334Z"
    }
  },
  {
    "ordinal": 6,
    "status": "completed",
    "model": {
      "instanceId": "codex_codex_b",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a7c-1506-7e42-9fbb-0dbfeba441ce",
    "usage": {
      "usedTokens": 77456,
      "maxTokens": 258400,
      "inputTokens": 77442,
      "cachedInputTokens": 11264,
      "outputTokens": 14,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:46:03.692Z"
    }
  }
]
handoffs targeting overflow run 6:
[
  {
    "strategy": "delta_since_target_last_seen",
    "delivery": {
      "nativeThreadId": "01a18a7c-1506-7e42-9fbb-0dbfeba441ce",
      "status": "injected",
      "itemIds": [
        "turn-item:message:3ae124dc-6b96-45ae-b5fc-e6b6ff801950",
        "turn-item:provider:codex:native-item:msg_04028f80ac267bc6016ae3f6a4fc988191a5cdafedf013021c"
      ],
      "omittedItemIds": []
    },
    "status": "ready",
    "coveredRunOrdinals": {
      "from": 5,
      "to": 5
    }
  },
  {
    "strategy": "full_thread_summary",
    "delivery": {
      "nativeThreadId": "01a18a7c-1506-7e42-9fbb-0dbfeba441ce",
      "status": "injected",
      "itemIds": [
        "turn-item:message:b2987c6e-05c1-439e-a3ee-62ebba71d34a",
        "turn-item:provider:codex:native-item:workspace-preparation%3Arun%3Athread%3Ae2d04711-87dc-4b1e-ba59-901775165fe0%3Aordinal%3A1",
        "turn-item:provider:codex:native-item:msg_0bfdf88d8419e8bd016ae3f5c2d7408191bca2b069bed614e9",
        "turn-item:message:adbd4444-1487-42d4-b495-ba9d5c221653",
        "turn-item:provider:codex:native-item:msg_0885d4f4b7fd5026016ae3f6077a908191b9b8b9a75bf613c1",
        "turn-item:message:4bc04a94-f9e9-49b0-92dd-4f939e72d198",
        "turn-item:provider:codex:native-item:msg_04028f80ac267bc6016ae3f639a5f0819192c5fe9a3be0fb57",
        "turn-item:message:18d6323f-66f4-4175-816b-893e792f6ff8",
        "turn-item:provider:codex:native-item:msg_055294fc32c6c37b016ae3f68a8c9081919de232971e114055",
        "turn-item:message:3ae124dc-6b96-45ae-b5fc-e6b6ff801950",
        "turn-item:provider:codex:native-item:msg_04028f80ac267bc6016ae3f6a4fc988191a5cdafedf013021c"
      ],
      "omittedItemIds": []
    },
    "status": "ready",
    "coveredRunOrdinals": {
      "from": 1,
      "to": 5
    }
  }
]

PR head 0e73689c9fa07a50651c69ac85dd5a0a54c4f36f
read-only persisted run, model, native identity, and token-usage queries:
[
  {
    "ordinal": 1,
    "status": "completed",
    "model": {
      "instanceId": "codex",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a82-e51c-7e10-9779-48f5c7b466e8",
    "usage": {
      "usedTokens": 16152,
      "maxTokens": 258400,
      "inputTokens": 16141,
      "cachedInputTokens": 9216,
      "outputTokens": 11,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:54:03.984Z"
    }
  },
  {
    "ordinal": 2,
    "status": "completed",
    "model": {
      "instanceId": "codex_codex_b",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a86-e924-76d2-b383-0939614d1599",
    "usage": {
      "usedTokens": 14216,
      "maxTokens": 258400,
      "inputTokens": 14206,
      "cachedInputTokens": 9216,
      "outputTokens": 10,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:57:47.869Z"
    }
  },
  {
    "ordinal": 3,
    "status": "completed",
    "model": {
      "instanceId": "codex",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a82-e51c-7e10-9779-48f5c7b466e8",
    "usage": {
      "usedTokens": 16962,
      "maxTokens": 258400,
      "inputTokens": 16952,
      "cachedInputTokens": 9216,
      "outputTokens": 10,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:57:53.163Z"
    }
  },
  {
    "ordinal": 4,
    "status": "completed",
    "model": {
      "instanceId": "codex_codex_b",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a86-e924-76d2-b383-0939614d1599",
    "usage": {
      "usedTokens": 15030,
      "maxTokens": 258400,
      "inputTokens": 15020,
      "cachedInputTokens": 14080,
      "outputTokens": 10,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:58:24.353Z"
    }
  },
  {
    "ordinal": 5,
    "status": "completed",
    "model": {
      "instanceId": "codex",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a82-e51c-7e10-9779-48f5c7b466e8",
    "usage": {
      "usedTokens": 17782,
      "maxTokens": 258400,
      "inputTokens": 17771,
      "cachedInputTokens": 16768,
      "outputTokens": 11,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T01:58:29.341Z"
    }
  },
  {
    "ordinal": 6,
    "status": "completed",
    "model": {
      "instanceId": "codex_codex_b",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a8a-4c26-7010-a5c5-bf893e4f5e96",
    "usage": {
      "usedTokens": 75666,
      "maxTokens": 258400,
      "inputTokens": 75652,
      "cachedInputTokens": 9216,
      "outputTokens": 14,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T02:01:31.111Z"
    }
  },
  {
    "ordinal": 7,
    "status": "completed",
    "model": {
      "instanceId": "codex_codex_b",
      "model": "gpt-6.1-sol"
    },
    "nativeThreadId": "01a18a8a-4c26-7010-a5c5-bf893e4f5e96",
    "usage": {
      "usedTokens": 75722,
      "maxTokens": 258400,
      "inputTokens": 75704,
      "cachedInputTokens": 75520,
      "outputTokens": 18,
      "reasoningOutputTokens": 0,
      "updatedAt": "2026-10-30T02:02:20.313Z"
    }
  }
]
handoffs targeting overflow run 6:
[
  {
    "strategy": "delta_since_target_last_seen",
    "delivery": {
      "nativeThreadId": "01a18a8a-4c26-7010-a5c5-bf893e4f5e96",
      "status": "injected",
      "itemIds": [
        "turn-item:message:e166634d-d489-4ddf-9aef-19004855af09",
        "turn-item:provider:codex:native-item:msg_0032b6913461b57d016ae3f9c4fd4c8191984747cddebb6340"
      ],
      "omittedItemIds": []
    },
    "status": "ready",
    "coveredRunOrdinals": {
      "from": 5,
      "to": 5
    }
  },
  {
    "strategy": "full_thread_summary",
    "delivery": {
      "nativeThreadId": "01a18a8a-4c26-7010-a5c5-bf893e4f5e96",
      "status": "injected",
      "itemIds": [
        "turn-item:message:e220fe74-5d1f-4afb-a31c-e2cf8cebe2f2",
        "turn-item:provider:codex:native-item:workspace-preparation%3Arun%3Athread%3Acbfe1e83-3dd8-4e15-845b-aefa9666e18f%3Aordinal%3A1",
        "turn-item:provider:codex:native-item:msg_0032b6913461b57d016ae3f8bbba30819197c85b56d50ff6f3",
        "turn-item:message:e27ed5a4-c727-4c6f-9012-e445e296fd31",
        "turn-item:provider:codex:native-item:msg_00142f5151f7bea4016ae3f99b3024819198239fe0e635664a",
        "turn-item:message:9d2d2ec0-28f4-4bc9-b75b-c003af95d9a8",
        "turn-item:provider:codex:native-item:msg_0032b6913461b57d016ae3f99fd4cc81918d550d0407f63546",
        "turn-item:message:69a318c7-0ab7-48c6-9af3-c5ec25b27898",
        "turn-item:provider:codex:native-item:msg_00142f5151f7bea4016ae3f9bfe0b081918b170ce097381aea",
        "turn-item:message:e166634d-d489-4ddf-9aef-19004855af09",
        "turn-item:provider:codex:native-item:msg_0032b6913461b57d016ae3f9c4fd4c8191984747cddebb6340"
      ],
      "omittedItemIds": []
    },
    "status": "ready",
    "coveredRunOrdinals": {
      "from": 1,
      "to": 5
    }
  }
]

main overflow prompt JSON UTF-8 bytes: 175910
PR overflow prompt JSON UTF-8 bytes: 178910
Both ask for second/third codewords, followed by multibyte padding under the client 120000-character limit. Different padding length compensates for different real usage.
main resumed budget 258400 - 17815 - 175910 - 64600 = 75 bytes.
PR resumed budget max(0,258400 - 15030 - 178910 - 64600) = 0 bytes; fresh budget 14890 bytes.

server log /tmp/main-dev.log
[01:45:50.079] WARN (#26500): Recovering provider context in a fresh native session
  {
    driver: 'codex',
    providerThreadId: 'provider-thread:provider:codex:native-thread:pending%3Arun%3Athread%3Ae2d04711-87dc-4b1e-ba59-901775165fe0%3Aordinal%3A4',
    runId: 'run:thread:e2d04711-87dc-4b1e-ba59-901775165fe0:ordinal:6',
    reason: 'handoff_budget_exhausted',
    errorTag: 'ContextHandoffBudgetError'
  }
[01:45:50.189] INFO (#26636) http.span=8ms: Sent HTTP response

server log /tmp/dev.log
[02:01:21.688] WARN (#18435): Replacing the native provider thread with portable context
  {
    driver: 'codex',
    providerThreadId: 'provider-thread:provider:codex:native-thread:pending%3Arun%3Athread%3Acbfe1e83-3dd8-4e15-845b-aefa9666e18f%3Aordinal%3A2',
    runId: 'run:thread:cbfe1e83-3dd8-4e15-845b-aefa9666e18f:ordinal:6',
    reason: 'handoff_overflow'
  }
[02:01:21.746] INFO (#18570) http.span=7ms: Sent HTTP response
  http.method: POST

Browser observed both main and PR answer: maple-24579 birch-24579. PR normal follow-up answered cedar-24579 maple-24579 birch-24579 and preserved run 6 native ID.
Original bug did not reproduce on current main: #25610 (07242abff3) independently implements recovery. This is not before-failure/after-success evidence.

Focused checks this turn through blacksmith-check:
command: vp i && vp test run apps/server/src/orchestration-v2/testkit/ProviderSwitch.integration.test.ts apps/server/src/orchestration-v2/ContextHandoffBudget.test.ts
exit: 0
ProviderSwitch.integration.test.ts: 42 passed
ContextHandoffBudget.test.ts: 18 passed
2 test files, 60 tests passed. Duration 21.58s.
Recorded CI at exact PR head: 28 successful, 0 pending, 0 failing. No source changes or push, so check:changed was not re-run.