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Mortdecai 93f6c33cd3 feat: simplify Google switch to on-only (state push restored)

Dropped the both-on/off-fire workaround now that HomeGraph reportState works
(new SA key + linked agent). turn_off is a no-op; on-tap prints; tile auto-reverts
via reportState. Verified: turn_on prints, turn_off does nothing. Docs/DECISIONS
updated to mark the HomeGraph auth issue resolved.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-10 04:53:26 -04:00

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HA + Google Home setup — POS Briefing button (DEPLOYED 2026-06-07)

Status: deployed on VM HA (192.168.0.146, HAOS 2026.2.3) and verified end-to-end through HA. Final Google-app surfacing is yours (see "Your steps").

Chain: Google Home tile → HA switch.print_daily_briefing → button.press on button.pos_briefing_print_daily_briefing → MQTT posbriefing/button/press (broker CT 301) → pos-briefing-mqtt.service on steel141 → pos_briefing.py → printer (by MAC) → TM-m30.

Why a switch, not a scene

A script/scene exposed to Google gets the Scene trait, which Google Home does not render as a tappable tile (it's voice/Routine-only). A switch renders as a tile (like the LG TV). So the action is exposed as a template switch.

The switch state is forced always-off; an on-tap fires the print and the tile auto-reverts to off a few seconds later (via HomeGraph reportState). turn_off is a no-op. The bridge debounce guards against any stray double-fire.

What is deployed on VM HA `/config` (backups in `/config/.backup/`)

scripts.yaml — script.print_daily_briefing (presses the button). Kept as an alternate trigger; not exposed to Google.
configuration.yaml:
- switch: template print_daily_briefing (the tile; entity switch.print_daily_briefing).
- google_assistant.entity_config exposes switch.print_daily_briefing (alongside the LG TV + projector; nothing else changed).
ha core check passed → ha core restart. Local SYNC webhook confirms the entity is reported to Google as action.devices.types.SWITCH.

Verified

Local Google SYNC (the manual integration's local-fulfillment webhook) returns 3 devices: Print Daily Briefing (SWITCH), Big TV (SWITCH), Projector (SETTOP).
switch.turn_on switch.print_daily_briefing → bridge Briefing printed OK → physical receipt. (Same for the earlier script path.)

HomeGraph auth — RESOLVED 2026-06-07

The old SERVICE_ACCOUNT.json key (project seth-freiberg, SA claude@seth-freiberg.iam) was invalid (invalid_grant) — rotated in the lgtv 2026-06-06 cleanup, never refreshed — so requestSync/reportState 400'd. Seth issued a new JSON key (id 8e3e812b6913…); deployed to /config/SERVICE_ACCOUNT.json (0600), restarted HA. After a Google re-link registered the agent, both APIs return 200 → live state push works for all devices. (Note: a manually-triggered google_assistant.request_sync via the admin API logs a harmless 404 because it sends the unlinked owner-context id 2c22820…; HA's automatic reporting uses the linked f948247… and succeeds.)

Status: working

Tapping Print Daily Briefing in Google Home (account slingshooter08) prints — verified end-to-end. If you ever re-add it: "Hey Google, sync my devices" surfaces the tile; remove any stale/phantom device if Google's count exceeds HA's 3.

Notes

A print takes ~1–2 min (gemma4:26b). posbriefing/status goes printing → ok.
Google-linking invariants (lgtv 2026-06-06, satisfied — don't re-fix): manual google_assistant, scopes email+name, "HTTP basic auth header" OFF, GCP consent screen untouched (shared project).

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