Wasserzähler QR-Code System + Serienbrief + Admin Import

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- Wasserzähler-Stammdaten Import (Drag & Drop Excel/CSV)
- QR-Code Druckseite mit Browser-Vorschau
- QR-Code Excel Download (ExcelJS, eingebettete QR-PNGs)
- Serienbrief wie Vorlage wasserablesung.pdf
  - HTML-Vorschau (max 20) + PDF Download (PDFKit, 1000+ skalierbar)
  - Antwortkarte mit QR-Code, Briefmarke, Zählerdaten
- Bürgerseite: nur Kundennr./Zählernr./Stand (Datenschutz)
- Kundennummer + letzter_stand + letzte_ablesung zum Schema
- Bürgermeister: Patrick Krutzler
- CAPTCHA verify API Route

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

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Michael

2026-03-03 00:20:44 +01:00

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commit bb97c4b1fa

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