PR 32178 runtime verification, 2026-11-15 UTC
Main: 4a3be943c9 (github/main fetched this turn)
PR: 4c00742fd9a76f86892013e22e6679db99042edc
Browser: repository Playwright 1.64.1 + /usr/bin/google-chrome
Main server stopped before PR server started. PR final home: /home/user/t3code/.t3

Main: real Codex gpt-6.1-sol turn returned /home/user/main and terminal-worker-provider-ok. Integrated terminal output survived browser reload.
PR: same prompt, same real repository, same provider/model completed in 8.4s.

PR terminal history files after a real EISDIR persistence failure, restoring the file, writing to original terminal and second terminal:

terminal_YWYyNTNiZWItNDMyZi00OGE0LWI5OTAtYWJiOWZiMjk5NjM4.log
[(no branch)]:~/main$ 

[(no branch)]:~/main$ echo terminal-persistence-before-error

terminal-persistence-before-error
[(no branch)]:~/main$ e

[(no branch)]:~/main$ echo terminal-real-write-error

terminal-real-write-error
[(no branch)]:~/main$ echo terminal-recovered-after-error

terminal-recovered-after-error
[(no branch)]:~/main$ 

[(no branch)]:~/main$ 
terminal_YWYyNTNiZWItNDMyZi00OGE0LWI5OTAtYWJiOWZiMjk5NjM4_dGVybS0y.log
[(no branch)]:~/main$ echo

[(no branch)]:~/main$ echo second-terminal-key-ok

second-terminal-key-ok
[(no branch)]:~/main$ 
Real server warning:
failed to persist terminal history
  {
    threadId: 'af253beb-432f-48a4-b990-abb9fb299638',
    terminalId: 'term-1',
    error: {
      reason: {
        _tag: 'BadResource',
        module: 'FileSystem',
        method: 'writeFile',
        pathOrDescriptor: '/home/user/t3code/.t3/userdata/logs/terminals/terminal_YWYyNTNiZWItNDMyZi00OGE0LWI5OTAtYWJiOWZiMjk5NjM4.log',
        syscall: 'open',
        cause: [Error]
      },
      cause: [Error: EISDIR: illegal operation on a directory, open '/home/user/t3code/.t3/userdata/logs/terminals/terminal_YWYyNTNiZWItNDMyZi00OGE0LWI5OTAtYWJiOWZiMjk5NjM4.log'] {
        errno: -21,
        code: 'EISDIR',
        syscall: 'open',
        path: '/home/user/t3code/.t3/userdata/logs/terminals/terminal_YWYyNTNiZWItNDMyZi00OGE0LWI5OTAtYWJiOWZiMjk5NjM4.log'
      },
      _tag: 'PlatformError',
      '~effect/PlatformError': '~effect/PlatformError'
    }
  }
[04:25:58.973] WARN (#720): failed to persist terminal history
  {
    threadId: 'af253beb-432f-48a4-b990-abb9fb299638',
    terminalId: 'term-1',
    error: {
      reason: {
        _tag: 'BadResource',
        module: 'FileSystem',
        method: 'writeFile',
        pathOrDescriptor: '/home/user/t3code/.t3/userdata/logs/terminals/terminal_YWYyNTNiZWItNDMyZi00OGE0LWI5OTAtYWJiOWZiMjk5NjM4.log',
        syscall: 'open',
        cause: [Error]
      },
      cause: [Error: EISDIR: illega

Blacksmith focused check: vp test run packages/shared/src/KeyedCoalescingWorker.test.ts: 5 passed. CI snapshot: 28 successful, 0 failing, 0 pending.

LIMITATION: no original synchronous processor-construction failure reproduced through the app on main. The only production caller is TerminalManager persistence; process is Effect.fn and already returns a suspended effect. EISDIR is an effect failure, not the construction-time throw addressed by this PR. Recovery checks and unit tests do not establish end-to-end reproduction of the original bug. Native clients not exercised. No source changes or pushes.