Prefix service names with the accessory name

[tillkruss]

Problem

Every service this plugin creates is named with a hardcoded literal — 'Temp', 'Humidity', 'Battery', 'Air Quality', 'CO2', 'Air Pressure', 'Radon' — so two Airthings devices on the same bridge publish services with identical names.

That makes them indistinguishable in Homebridge UI. @homebridge/hap-client derives each service's nameBasedUniqueId as:

sha256([
  service.instance.name,                      // "homebridge"
  service.instance.username,                  // bridge MAC
  service.accessoryInformation.Manufacturer,  // "Airthings"
  service.serviceName,                        // "Temp"
  service.uuid.slice(0, 8),                   // service type
].join('|'))

The serial number isn't an input. With two Airthings devices on one bridge, all five components match, so both devices' services hash to the same value. Homebridge UI keys custom names on that hash, with two visible consequences:

• Renaming one device's tile silently renames the other's.
• The two services collapse into a single tile, so one device's sensors go missing from the room they were placed in.

All seven services collide. I hit this with a View Plus and a Wave Radon on one bridge — every rename applied to both devices, which looked like the UI was failing to save.

Fix

Prefix each service name with config.name, which is already used for the accessory's Name characteristic (line 100) and is therefore in scope and guaranteed set (the plugin defaults it upstream).

Verification

Computing nameBasedUniqueId for both of my devices, before and after:

Service	Before	After
Battery	❌ collides	✅ c5583c8a… vs 636dfcea…
Air Quality	❌ collides	✅ 19f83c0b… vs 7c5b7ce1…
Temp	❌ collides	✅ 763dc51f… vs eef5d29e…
Humidity	❌ collides	✅ c36e58e0… vs 61324296…
CO2	❌ collides	✅ cb7e57d4… vs 02aefa4e…
Air Pressure	❌ collides	✅ 74aae75b… vs 5b1c6400…
Radon	❌ collides	✅ e88488f2… vs bf0604dc…

7/7 collide before, 0/7 after. npm run build (lint + tsc) passes clean.

Compatibility

uniqueId hashes username + aid + iid + type, none of which change here, so existing Homebridge UI room layouts and HomeKit pairings are preserved. This is not a bridge-identity change.

The user-visible effect is that service names in the Home app become e.g. "Blue Room View Plus Temp" instead of "Temp". Names users have set themselves in the Home app take precedence and are unaffected. If you'd rather not change this for existing single-device users, I'm happy to put it behind a config flag or apply the prefix only when more than one accessory is configured — just say which you'd prefer.

🤖 Generated with Claude Code

https://claude.ai/code/session_01SPgfBrVBq5w5useKSLXR14

[Copilot]

Pull request overview

This PR updates the HomeKit service display names created by the Airthings Homebridge plugin so they’re unique per accessory instance, preventing Homebridge UI service collisions when multiple Airthings devices are bridged.

Changes:

• Prefixes each created service name with config.name (the accessory name) for Battery, Air Quality, Temperature, Humidity, CO2, Air Pressure, and Radon services.
• Keeps accessory identity stable (no changes to serial/UUID/subtype usage in the plugin code path shown).

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