POS-Automation/.claude/handoffs/2026-07-17-141220-nest-pivot-to-nest-alert.md

Handoff: Nest-temp question pivoted out — nothing changed in POS-Automation

Session Metadata

• Created: 2026-07-17 14:12
• Project: /home/claude/bin/POS-Automation
• Branch: master
• Session duration: one evening (2026-07-16)

Recent Commits (for context)

• 1dfe8da docs: session handoff — Google Home print button (complete)
• 93f6c33 feat: simplify Google switch to on-only (state push restored)

Handoff Chain

• Continues from: 2026-06-11-045021-pos-google-home-button.md
• Supersedes: nothing — the 2026-06-11 handoff remains the authoritative state of the POS briefing feature (complete, live).

Current State Summary

No POS-Automation code, config, or deployment changed this session.

The session started here with "does the Google Home integration allow exposure of the Nest thermostat temperatures?" — initially assumed to be a receipt-printing feature. Seth then clarified he doesn't use HA for this and wanted SMS alerts when the temp goes out of range, which is not POS scope. The work spun off into a new standalone project:

→ ~/bin/nest-alert/ — SDM API poller (5-min systemd timer on steel141) that texts Seth via the hola-bot Twilio number when the Nest thermostat leaves 60–80°F. Live and verified. See its CLAUDE.md, DECISIONS.md, and .claude/handoffs/2026-07-16-nest-alert-live.md for everything (Device Access project, OAuth saga, known SDM limits).

Important Context

• The POS briefing pipeline (Google Home switch → MQTT → printer) is untouched and was working as of 2026-06-11. Do not conflate the google_assistant integration on the HA VM (push-only, POS button) with the new SDM/Device-Access setup (pull, nest-alert project) — they are separate Google surfaces and separate GCP projects.
• If a future session wants Nest temperature on the printed receipt, the lazy path is importing read_temps_f/access_token from /home/claude/bin/nest-alert/nest_alert.py (stdlib-only, its .env already has the refresh token) — not building anything new here.

Immediate Next Steps

1. None for POS-Automation. Feature state is unchanged from the 2026-06-11 handoff; its optional deferred items (print latency, DHCP reservation, dashboard None-fields, SA key rotation) still stand.

Decisions Made

• Nest alerting deliberately kept out of POS-Automation (and out of hola-bot) — recorded in ~/bin/nest-alert/DECISIONS.md.

Potential Gotchas

• None new for this repo. See the 2026-06-11 handoff's gotchas (pytest rootdir pin, bridge deploy path, google_assistant 404 red herring).