v0.2.9

Features

• docs: update favicon and improve documentation (a7f25f4)
• battery_soc: gate the full calibration on a tail-current criterion (4d795d7)
• battery_soc: make the calibration tolerance configurable per side (5adfad3)
• battery_soc: harden the hold time against short charge dropouts (bc05d92)
• battery_soc: record and publish calibration events (65e0e9b)
• battery_soc: derive setting suggestions from calibration behaviour (1f6aed3)
• battery_soc: estimate internal resistance from calibration behaviour (021eab7)
• battery_soc: publish calibration suggestions on a dedicated topic (c652ed4)
• ha: new calibration tunables in the options flow (093d5da)
• ha: calibration suggestions as a diagnostic sensor (f4b8fa3)
• ha: apply_suggestion service for calibration suggestions (e96bcc5)

Documentation

• update changelogs (6284c1a)
• ha: document calibration tuning (9f81199)

Chores

• initial public release of Energy Node (e9c9417)
• battery_soc: fix German comment typo in state.py (6567874)
• release: bump component versions (3fd42b3)