Opencode Fails to Launch After Upgrade - Bun Canary Crash (ThreadLock Assertion Failure) #14992

Description

After upgrading opencode, the executable fails to start and crashes with a Bun Canary internal assertion error related to ThreadLock. Below is the full crash log and environment details:

`Bun Canary v1.3.10-canary.100 (6b1d6c76) Windows x64 (baseline)
Windows v.win10_cu
CPU: sse42 avx avx2
Args: "C:\Users\ADMINI1\CONFIG1\herd\bin\nvm\v25.4.0\node_modules\opencode-ai\node_modules\opencode-windows-x64\bin\opencode.exe" "--user-agent=opencode/1.2.11" "--use-system-ca" "--"
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) fetch(2) jsc standalone_executable workers_spawned
Builtins: "bun:ffi" "bun:main" "bun:sqlite" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:console" "node:crypto" "node:dns" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:process" "node:querystring" "node:readline" "node:stream" "node:stream/promises" "node:string_decoder" "node:timers" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "undici" "node:v8" "node:http2" "node:diagnostics_channel" "node:dgram"
Elapsed: 690ms | User: 671ms | Sys: 125ms
RSS: 0.52GB | Peak: 0.52GB | Commit: 0.89GB | Faults: 134196 | Machine: 17.01GB

panic(thread 9136): Internal assertion failure: ThreadLock is locked by thread 9880, not thread 9136
oh no: Bun has crashed. This indicates a bug in Bun, not your code.

To send a redacted crash report to Bun's team,
please file a GitHub issue using the link below:

https://bun.report/1.3.10/ea26b1d6c7kQugogC+iwgN+xxuK4t2wM6q5M42mNkxvNm9mQwwn0eCYKERNEL32.DLLog7FCSntdll.dlliqzUA0eNrzzCtJLcpLzFFILC5OLSrJzM9TSEvMzCktSrVSSAjJKEpNTPHJT85OUMgsVsjJT85OTVFIqlQoAUsoWFpYGOgo5OWXwAQsDY3NAOOcHHs `

Environment Details:
OS: Windows 10 (win10_cu) x64
Bun Version: Canary v1.3.10-canary.100 (6b1d6c76)
Node Version: v25.4.0 (via NVM)
Opencode Version: 1.2.11 (user-agent)
CPU: Supports sse42, avx, avx2
Steps to Reproduce:
Upgrade opencode to the latest version
Attempt to launch opencode.exe via the command line/automated process
Crash occurs immediately with the above ThreadLock assertion error
Expected Behavior:
Opencode should launch normally without Bun crashing due to internal thread locking issues.
Actual Behavior:
Opencode fails to start, Bun crashes with an internal assertion failure for ThreadLock (locked by thread 9880 instead of 9136).

Plugins

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OpenCode version

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Steps to reproduce

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Terminal

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