/clear tore the session down and respawned on the same deterministic
--session-id BEFORE the old claude process had actually exited. The
orchestrator's close() ran conversation.dispose() unawaited and kill()
only sent SIGTERM without awaiting exitCode, so the respawn raced a
still-alive holder of the id — claude 2.1.177 rejects it as "Session ID
… is already in use" and exits 1.
Root cause confirmed from clide's own crash log + isolated probes against
2.1.177: the id frees the instant the holder dies (SIGTERM cleans the new
~/.claude/sessions/<pid>.json registry), so awaiting real death is the
fix — and it preserves T-268's deterministic-id continuity (chosen over
minting a fresh id, which would change the continuity model).
- stream_json_session: kill() awaits exitCode (SIGTERM → 2s → SIGKILL →
await); dispose() idempotent (shared cached future); new
SessionEnd.reason getter (last non-empty stderr line, capped).
- session_orchestrator: close() awaits session.dispose() so teardown
returns only once the process is truly dead, before clear + respawn.
- claude_pane: surface end.reason in the status line — no more opaque
"code 1".
- session_naming: correct the stale clearSessionTranscript doc (real
sidecar is the shared memory/ dir) + the await-death precondition.
- tests: close() blocks until process exit; SessionEnd.reason.
CLI 2.1.177 re-probe (folded-in scope): sessions/ registry characterized
(PID-keyed, cleaned on exit); init cache auto-refreshes; advertised
slash_commands show no routing-table drift. No further code change needed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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