Fix broken map rendering, split GPS cleanup, receipt parser and design backlog

Leaflet's stylesheet was appended to document.head, so it never reached the
panel's shadow root: .leaflet-tile{position:absolute} never applied, tiles laid
out as in-flow images (~1040px inside a 190px box) and the marker pane ended up
far below the visible area. That is the real cause of the long-standing
"fragmented Leaflet rendering" finding and of the invisible vehicle pin - every
tile request had actually succeeded. The stylesheet now goes into the shadow
root and is awaited before the map is built.

Also in this round:
- Map tiles are always light (Google-Maps-style), no dark variant at night.
- Vehicle marker uses the real CI poi-car icons (poi-car-l >=34px, poi-car-s
  below), with a white halo so the outline stays readable on tiles.
- Removed the obsolete combined STANDORT_TRACKER field; only the split
  lat/lon sensors remain.
- Receipt upload: widened the try block so base64/save failures surface, and
  the frontend call site now reports a rejected service call.
- Generic receipt parser: total detection is line-based (letter-spaced
  headings, no more matching the SUMME-EUR column header, tax lines excluded),
  address heuristic handles 4-digit postcodes and single-line address blocks,
  and "Preis/L" matches without a spelled-out "Liter".
- Design backlog: red hairline frame on list rows (delete button bled through
  at fractional row heights) and select fields now use the grey background box.

Shell 10-receipt regression suite still passes; all changes verified live in
the audi_ha_test container.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

homeassistant/pyscript/belegverarbeitung.py

@@ -103,14 +103,20 @@ def audi_dashboard_beleg_hochladen(pdf_base64=None, dateiname=None, tank_id=None
     # task.executor entfällt hier bewusst: _pdf_speichern/_parser_aufrufen sind
     # in dieser pyscript-Datei definiert, task.executor akzeptiert aber nur
     # echte externe Python-Funktionen (siehe Kopfkommentar in profil.py).
-    inhalt_bytes = base64.b64decode(pdf_base64)
-    dateiname = dateiname or f"beleg_{datetime.datetime.now().strftime('%Y%m%d_%H%M%S')}.pdf"
-    pdf_pfad = _pdf_speichern(inhalt_bytes, dateiname)
-
+    #
+    # Alles bis zum geparsten Ergebnis in einem try: eine unbehandelte
+    # Exception hier (kaputtes Base64, volle Festplatte, ...) wäre für die
+    # Oberfläche unsichtbar geblieben - serviceRufen() im Frontend loggt einen
+    # rejizierten Service-Aufruf nur in die Browser-Konsole, zeigt aber nichts
+    # an (siehe audi-dashboard-app.js). Bisher war nur der Parser-Aufruf
+    # selbst so abgesichert; b64decode/_pdf_speichern fehlten.
     try:
+        inhalt_bytes = base64.b64decode(pdf_base64)
+        dateiname = dateiname or f"beleg_{datetime.datetime.now().strftime('%Y%m%d_%H%M%S')}.pdf"
+        pdf_pfad = _pdf_speichern(inhalt_bytes, dateiname)
         geparst = _parser_aufrufen(pdf_pfad)
     except Exception as exc:
-        log.error(f"audi_dashboard: Beleg konnte nicht geparst werden: {exc}")
+        log.error(f"audi_dashboard: Beleg konnte nicht verarbeitet werden: {exc}")
         frontend_veroeffentlichung.beleg_ergebnis_veroeffentlichen({"fehler": "Beleg konnte nicht gelesen werden", "tank_id": tank_id})
         return