Fix CHANGELOG to use English

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: itsDNNS

CHANGELOG.md

@@ -7,15 +7,15 @@ Versioning: `YYYY-MM-DD.N` (date + sequential build number per day)
 ## [2026-02-09.3]
 
 ### Added
-- **Hamburger-Menu**: Sliding Sidebar mit Navigation (Live, Tagesverlauf, Wochentrend, Monatstrend, Einstellungen)
-- **Kalender-Popup**: Mini-Monatskalender mit hervorgehobenen Datentagen zur Datumsnavigation
-- **Trend-Charts**: Chart.js Diagramme fuer DS Power, DS SNR, US Power und Fehler (Tag/Woche/Monat)
-- **API-Endpunkte**: `/api/calendar`, `/api/trends`, `/api/snapshot/daily` fuer Trend- und Kalenderdaten
-- **Snapshot-Uhrzeit**: Konfigurierbarer Referenz-Zeitpunkt fuer Tagesvergleiche (Setup + Settings)
+- **Hamburger menu**: Sliding sidebar with navigation (Live, Day trend, Week trend, Month trend, Settings)
+- **Calendar popup**: Mini month calendar with highlighted data days for date navigation
+- **Trend charts**: Chart.js diagrams for DS Power, DS SNR, US Power and Errors (day/week/month)
+- **API endpoints**: `/api/calendar`, `/api/trends`, `/api/snapshot/daily` for trend and calendar data
+- **Snapshot time**: Configurable reference time for daily comparisons (Setup + Settings)
 
 ### Changed
-- **Dashboard komplett ueberarbeitet**: Neue Topbar mit Hamburger, Datumsnavigation und Kalender
-- **Timeline-Navigation ersetzt**: Kalender-Popup statt Dropdown-Select fuer historische Snapshots
+- **Dashboard redesigned**: New topbar with hamburger, date navigation and calendar
+- **Timeline navigation replaced**: Calendar popup instead of dropdown select for historical snapshots
 
 ## [2026-02-09.2]