feat(deploy): add deploy script and per-device config files
deploy/deploy.sh — automated deploy: arch detection, scp .app, write
seed.json, verify. Supports single laptop, list, or "all"; --seed-only
flag skips .app copy for key-rotation runs.
deploy/devices.conf — all 19 laptops (num / IP / event_device_id).
deploy/event.env.example — template for gitignored event.env (API key).
README updated: deploy/ table, script usage, manual steps moved to
reference section.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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