Move durable run access and execution control onto the server-backed client, canonicalize run APIs under /api/v1/runs, and switch CLI integration tests to a shared test daemon/storage model with shared-state-safe assertions.
Transform `fabro server` from foreground-only TCP into a proper daemon: - `server start` launches background daemon with flock-based locking - `server start --foreground` retains current blocking behavior - `server stop` sends SIGTERM, waits, escalates to SIGKILL - `server status` reports running/stopped with PID, bind, uptime (--json) - `--bind` replaces `--host`/`--port`, supporting Unix sockets and TCP - Default bind is `{storage_dir}/fabro.sock` (Unix socket) - Hidden `__serve` subcommand for daemon child process lifecycle - Graceful shutdown via SIGTERM/SIGINT signal handlers Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>