tfaour
a7b6c6d77a
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battery_history stays cycle-scoped (reset on recharge, feeds the "on battery for"/estimate numbers), but nothing kept a permanent record -- added battery_log, appended on every report and never reset, capped at ~2 years of hourly reports as a sanity bound rather than a real limit. New GET /api/battery-log serves it; the web UI draws it as a plain canvas line chart (no chart library) under a new "Battery history" section, loaded once on page load. Also caught up server/README.md, which never documented the OTA firmware endpoints or the /api/queue response's current "device" shape from the earlier status-panel work.