PR #24267 final runtime transcript
Synthetic single fast-streaming turn; actual EventSink, in-memory SQLite, projections, production subscription, HTTP+WebSocket.
No dev server, provider process, credentials, live data, or seeding; all runtime state in memory; artifacts /tmp/ev-24267.
Server-to-client WebSocket bytes; permessage-deflate negotiated; received WebSocket message counts are not streamed event counts.
Scope: message.updated burst inside existing window, final assistant item+run completion; broader item/mixed identity cases proven by tests.

Commands (both exit0):
git switch --detach d14ace8233ad3cf7856b6b834824f888240d67a1
node /tmp/ev-24267/runtime.ts baseline-final
git switch t3/mobile-audit-stream-coalescing-20261023
node /tmp/ev-24267/runtime.ts head-final

Full checkout restored to final head; git status --porcelain empty. Both processes exited, scoped HTTP servers stopped.
Strict sequence order, terminal completed run after final non-streaming message, live/replay/HTTP snapshot/bounded WebSocket snapshot final-text equality asserted.
Original client closed before reconnect; replay has no snapshot and all replay sequences exceed its survivor cursor.
No real-provider traffic, historical client binaries, or separate-write timing benchmark claimed.

BEFORE
{
  "label": "baseline-final",
  "revision": "d14ace8233ad3cf7856b6b834824f888240d67a1",
  "harnessSha256": "5e1ed398e82f775615f5de06b3caa271ce43009eeee27334d29c0abc66342e7e",
  "inputSha256": "5efdba7157fec60d0dfbe25b65440993aca42966b4c1f8dd5ebe2775a7f2da6c",
  "compression": "permessage-deflate",
  "byteDirection": "server-to-client",
  "sourceUpdates": 100,
  "streamedMessageUpdates": 101,
  "streamedEvents": 103,
  "eventJsonBytes": 379706,
  "websocket": {
    "wireBytes": 2668,
    "decodedBytes": 379787,
    "messages": 2
  },
  "finalTextBytes": 6200,
  "expectedFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "liveFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "replayFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "httpSnapshotFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "websocketSnapshotFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "finalStreaming": false,
  "strictlyOrdered": true,
  "reconnectReplayFinalMatches": true,
  "reconnectHttpSnapshotFinalMatches": true,
  "reconnectWebsocketSnapshotFinalMatches": true,
  "terminalRunCompleted": true,
  "sequences": [
    5,
    6,
    7,
    8,
    9,
    10,
    11,
    12,
    13,
    14,
    15,
    16,
    17,
    18,
    19,
    20,
    21,
    22,
    23,
    24,
    25,
    26,
    27,
    28,
    29,
    30,
    31,
    32,
    33,
    34,
    35,
    36,
    37,
    38,
    39,
    40,
    41,
    42,
    43,
    44,
    45,
    46,
    47,
    48,
    49,
    50,
    51,
    52,
    53,
    54,
    55,
    56,
    57,
    58,
    59,
    60,
    61,
    62,
    63,
    64,
    65,
    66,
    67,
    68,
    69,
    70,
    71,
    72,
    73,
    74,
    75,
    76,
    77,
    78,
    79,
    80,
    81,
    82,
    83,
    84,
    85,
    86,
    87,
    88,
    89,
    90,
    91,
    92,
    93,
    94,
    95,
    96,
    97,
    98,
    99,
    100,
    101,
    102,
    103,
    104,
    105,
    106,
    107
  ]
}

AFTER
{
  "label": "head-final",
  "revision": "73341ea19416873704b2783fac9c92f42b0c0f11",
  "harnessSha256": "5e1ed398e82f775615f5de06b3caa271ce43009eeee27334d29c0abc66342e7e",
  "inputSha256": "5efdba7157fec60d0dfbe25b65440993aca42966b4c1f8dd5ebe2775a7f2da6c",
  "compression": "permessage-deflate",
  "byteDirection": "server-to-client",
  "sourceUpdates": 100,
  "streamedMessageUpdates": 2,
  "streamedEvents": 4,
  "eventJsonBytes": 21040,
  "websocket": {
    "wireBytes": 682,
    "decodedBytes": 21121,
    "messages": 2
  },
  "finalTextBytes": 6200,
  "expectedFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "liveFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "replayFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "httpSnapshotFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "websocketSnapshotFinalSha256": "4b918d45a52130975d81f69d218d6466339c95ccaa41bc1eff869a3d214c1f0a",
  "finalStreaming": false,
  "strictlyOrdered": true,
  "reconnectReplayFinalMatches": true,
  "reconnectHttpSnapshotFinalMatches": true,
  "reconnectWebsocketSnapshotFinalMatches": true,
  "terminalRunCompleted": true,
  "sequences": [
    104,
    105,
    106,
    107
  ]
}

Runtime logs: expected scoped WebSocket interruption on close is logged as 503; all data assertions pass and both process exit codes are 0.