General settings offer All / Low only / None for battery indicators as a
three-button segmented control, the same visual as the light-source choice
in the device dialog. Low only keeps just the red low state (below 20 %, or
a binary battery sensor that is on); normal, warning and unknown are hidden.
Storage keeps #792 compatibility: absent = All, false = None, the exact
string "low" = Low only. The backend accepts bool or "low" and refuses any
other value; old frontends read "low" as All, old backends refuse to save it
(documented in CONFIG-COMPATIBILITY). One presentation option
(batteryLowOnly) filters the resolved indicator, so View, kiosk, 2.5D,
space-card and the device dialog preview share the same rule.
Track raised ship -> show: new i18n keys, a new config value and Python.
Tests: unit (mode resolver, write, dirty, low-only presentation), backend
validator and support package, smoke_device_battery (low-only keeps only
red), smoke_general_settings_form (radios, save/reopen/clean, All removes
the key). New mutant battery-low-only-shows-every-state; the backend mutant
anchor moves to the new validator.
Issue: #807
User-Visible: yes
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018qZfe7YS4rqEMKoVeS3GKd
Resolve one stable battery source independently of the functional device face,
include battery-only ticks in immutable render snapshots, and add a default-on
shared preference. Keep LED strips excluded and Zigbee captions above the
passive, out-of-flow indicator. Use the owner's accepted four MDI icons in the
designer's frame geometry and colours.
Include resolver/backend/browser/pixel contracts and three new golden scenes.
Recalibrate the owner-approved absolute/raw size budgets; preserve the existing
initial View rolling ceiling and band. Lazy extraction remains separate #805.
Issue: #792
User-Visible: yes
Claude