Base: f89855713d
Environment: fs-11 Linux x64; real web dev server (7810) and server (15850); Claude Opus 5.5; fresh git project with an empty commit.
Steps: fresh root-checkout Claude thread; agent calls t3_worktree_handoff(branch=repro-25146-b, startFromOrigin=false, runSetupScript=false, continuationPrompt=run pwd/branch then reply CLAUDE HANDOFF FINISHED).
Observed: workspace changed to repro-25146-b; provider event stream failed; continuation remained queued.
Codex comparison: handoff and continuation completed.
Trace excerpts:
{
  "type": "effect-span",
  "name": "ClaudeAdapterV2.interruptTurn",
  "traceId": "cc7e8afad5edc122af3afa854b2aa4d3",
  "spanId": "de8768afe39f14a3",
  "parentSpanId": "a58ff1bc0b8df6f8",
  "sampled": true,
  "kind": "internal",
  "startTimeUnixNano": "1792972644206044552",
  "endTimeUnixNano": "1792972644207593572",
  "durationMs": 1.54902,
  "attributes": {},
  "events": [],
  "links": [],
  "exit": {
    "_tag": "Failure",
    "cause": "ProviderAdapterInterruptError: Failed to interrupt claudeAgent provider turn provider-turn:provider:claudeAgent:native-turn:turn%3Arun-attempt%3Arun%3Arun%253Athread%253A43491c61-d4fe-4448-aa74-19e7cdd49dbd%253Aordinal%253A1%3Aattempt%3A1.\n    at file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts:10183:19\n    at file:///home/ubuntu/wt/issue-25146/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/internal/effect.js:1483:96\n    at ClaudeAdapterV2.interruptTurn (file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/ProviderSessionManager.ts:1832:38)\n    at ClaudeAdapterV2.interruptTurn (definition) (file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts:10107:38)\n    at RunExecutionService.startRootRun (file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:1303:27)\n    at RunExecutionService.startRootRun (definition) (file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/RunExecutionService.ts:874:28)\n    at ProviderTurnStartService.start (file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/EffectWorker.ts:143:16)\n    at ProviderTurnStartService.start (definition) (file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/ProviderTurnStartService.ts:1356:21)\n    at serverActivation.forkParkedFiber (file:///home/ubuntu/wt/issue-25146/apps/server/src/serverRuntimeStartup.ts:395:30)\n    at serverActivation.forkParkedFiber (definition) (file:///home/ubuntu/wt/issue-25146/apps/server/src/serverActivation.ts:12:39)\n    at ServerRuntimeStartup.startEffectWorkerWithRelay (file:///home/ubuntu/wt/issue-25146/apps/server/src/serverRuntimeStartup.ts:552:9)\n    at ServerRuntimeStartup.startEffectWorkerWithRelay (definition) (file:///home/ubuntu/wt/issue-25146/apps/server/src/serverRuntimeStartup.ts:388:50) {\n  [cause]: ClaudeAgentSdkQueryRunnerError: Claude Agent SDK query failed.\n      at queryRunnerError (file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts:615:7)\n      at catch (file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts:1127:31)\n      at file:///home/ubuntu/wt/issue-25146/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/internal/effect.js:779:40 {\n    [cause]: Error: ProcessTransport is not ready for writing\n        at OR.write (file:///home/ubuntu/wt/issue-25146/node_modules/.pnpm/@anthropic-ai+claude-agent-sdk@0.3.276_@anthropic-ai+sdk@0.93.0_zod@4.6.5__@modelcontex_f96d439c6f919b6343f06102cacda03b/node_modules/@anthropic-ai/claude-agent-sdk/sdk.mjs:127:12245)\n        at file:///home/ubuntu/wt/issue-25146/node_modules/.pnpm/@anthropic-ai+claude-agent-sdk@0.3.276_@anthropic-ai+sdk@0.93.0_zod@4.6.5__@modelcontex_f96d439c6f919b6343f06102cacda03b/node_modules/@anthropic-ai/claude-agent-sdk/sdk.mjs:130:786\n        at new Promise (<anonymous>)\n        at nS.request (file:///home/ubuntu/wt/issue-25146/node_modules/.pnpm/@anthropic-ai+claude-agent-sdk@0.3.276_@anthropic-ai+sdk@0.93.0_zod@4.6.5__@modelcontex_f96d439c6f919b6343f06102cacda03b/node_modules/@anthropic-ai/claude-agent-sdk/sdk.mjs:129:11413)\n        at file:///home/ubuntu/wt/issue-25146/node_modules/.pnpm/@anthropic-ai+claude-agent-sdk@0.3.276_@anthropic-ai+sdk@0.93.0_zod@4.6.5__@modelcontex_f96d439c6f919b6343f06102cacda03b/node_modules/@anthropic-ai/claude-agent-sdk/sdk.mjs:129:6096\n        at zn (file:///home/ubuntu/wt/issue-25146/node_modules/.pnpm/@anthropic-ai+claude-agent-sdk@0.3.276_@anthropic-ai+sdk@0.93.0_zod@4.6.5__@modelcontex_f96d439c6f919b6343f06102cacda03b/node_modules/@anthropic-ai/claude-agent-sdk/sdk.mjs:127:20128)\n        at nS.interrupt (file:///home/ubuntu/wt/issue-25146/node_modules/.pnpm/@anthropic-ai+claude-agent-sdk@0.3.276_@anthropic-ai+sdk@0.93.0_zod@4.6.5__@modelcontex_f96d439c6f919b6343f06102cacda03b/node_modules/@anthropic-ai/claude-agent-sdk/sdk.mjs:129:6050)\n        at try (file:///home/ubuntu/wt/issue-25146/apps/server/src/orchestration-v2/Adapters/ClaudeAdapterV2.ts:1126:37)\n        at MixedScheduler.<anonymous> (file:///home/ubuntu/wt/issue-25146/node_modules/.pnpm/effect@4.0.5/node_modules/effect/dist/internal/effect.js:785:7)\n  }\n}"
  }
}