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fix(statusline): unique temp name per exporter refresh, so concurrent creates stay in tmux

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ensureStatusLineExporterScript() rewrites ~/.codeman/statusline-exporter.sh
via a temp file + rename whenever the script content changes (a fresh data
dir, or a release that changes it). The temp name was pid + Date.now(), so
claude sessions created in the same millisecond (spawn_workers, a multi-tab
Run) shared one temp path: the first rename consumed it and every other
writer failed with ENOENT on chmod or rename. createSession() treats that as
a mux failure and falls back to a direct PTY, so those sessions silently ran
outside tmux (no reattach after a server restart) while quick-start still
reported success.

Measured on a fresh isolated instance, 4 concurrent claude quick-starts:
master put 2 of 4 in tmux in both rounds; with this change 4 of 4, both
rounds. The temp suffix now comes from randomBytes, like the skill writer in
the same file and user-store.ts already do. The new test freezes Date.now()
and runs eight refreshes at once; it fails on master with the same ENOENT.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Codeman maintainer
2026-10-04 21:36:44 +02:00
parent 9240493c43
commit 17a976fa2e
2 changed files with 27 additions and 2 deletions
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src/hooks-config.ts
+5 -1
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@@ -1031,7 +1031,11 @@ export async function ensureStatusLineExporterScript(): Promise<string> {
// render, and a truncate-then-write (plus a chmod AFTER the write) opened two
// windows in which Claude Code could run an empty or non-executable file.
// rename() swaps the complete, already-executable file in atomically.
const tmpPath = `${scriptPath}.${process.pid}.${Date.now()}.tmp`;
// ⚠️ The temp name must be unique per CALL, not per millisecond: sessions created
// concurrently (spawn_workers, a multi-tab Run) refresh this together, a shared
// name let the first rename consume the others' temp file, and their ENOENT
// dropped those sessions from tmux to the direct-PTY fallback.
const tmpPath = `${scriptPath}.${process.pid}.${randomBytes(6).toString('hex')}.tmp`;
await writeFile(tmpPath, desired);
await chmod(tmpPath, 0o755);
await rename(tmpPath, scriptPath);