feat(setup): add scripted setup driver and auto-start Docker

`pnpm run setup:auto` chains the deterministic setup steps (environment
→ timezone → container → mounts → service → verify) by spawning the
existing per-step CLI and parsing its status blocks. Config via env:
NANOCLAW_TZ, NANOCLAW_SKIP.

Credentials + channel install + /manage-channels stay interactive —
verify reports what's left and exits 0 rather than failing the driver.

Also have the container step try to start Docker when it's installed
but not running (open -a Docker on macOS, sudo systemctl start docker
on Linux) and poll `docker info` for up to 60s before giving up. Both
/setup and setup:auto pick this up automatically.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -15,6 +15,7 @@
     "format:check": "prettier --check \"src/**/*.ts\"",
     "prepare": "husky",
     "setup": "tsx setup/index.ts",
+    "setup:auto": "tsx setup/auto.ts",
     "chat": "tsx scripts/chat.ts",
     "auth": "tsx src/whatsapp-auth.ts",
     "lint": "eslint src/",