Release v2.2.6
- V2.9 register audit: add missing reg 30279, move DC Charger PV
registers 31509/31511 to dcCharger namespace, fix ESS Preheating
TOU time gain (null→1) - Implement control write-back (plant/inverter/dcCharger, FC06/FC10)
and startup RW holding register read - Suppress repeated ESS Preheating warn; control startup read errors
downgraded to debug - All 11 READMEs: add v2.2.6 changelog, remove entries < v1.9.7
- CHANGELOG_OLD.md: prepend v1.8.23–v1.9.6 entries
Co-Authored-By: Claude Sonnet 4.6 noreply@anthropic.com