Before: setup/onecli.ts ran `curl -fsSL onecli.sh/install | sh` unconditionally. For users with OneCLI already running and bound to a specific listener (host-accessible, shared with other apps), re-running the installer rebound the gateway and broke those consumers.
Now: auto.ts probes for an existing install (`onecli version` + `onecli config get api-host`). If detected, clack asks: use the existing instance (recommended) or install a fresh one. The new --reuse flag in the onecli step skips the installer, reads the configured api-host, writes ONECLI_URL to .env, and moves on without touching the running gateway.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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