Update README for version 6.2.3 changes

Updated version number to 6.2.3 and added highlights for the new version.
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2026-04-01 00:00:46 +02:00
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@@ -11,12 +11,16 @@ This project is an ArduinoIDEfriendly firmware for the **Seeed XIAO ESP32
- Uses a white LED and an optional presence sensor to give quick visual feedback.
- Stores daily price data in **NVS** to survive reboots and reduce API calls.
The latest sketch implements **Version 6.2.2**.
The latest sketch implements **Version 6.2.3**.
---
## Version Highlights
### v6.2.3 - State-based display refresh logic (critical fix of v6.2.2 update)
- Problem: Screen would occasionally fail to update if the ESP32 was busy (fetching data or reconnecting WiFi) during the exact 00/15/30/45 minute mark.
- Fix: Switched from "Event-Based" (refresh only AT minute X) to "State-Based" (refresh IF current time != last refresh time). This ensures the screen updates immediately even if the device was busy during the transition.
### v6.2.2 - Display Blank Lines Issue Fix (critical fix of v6.2.1 update)
- Problem: Sometimes rows 0 and 1 (current 15-min prices and current hour) were blank.
- Cause: The "hour suppression" logic was hiding the current hour unexpectedly.