feat: manage branding profiles in the NetBox UI

New BrandingProfile model (migration 0001) with logo upload, color
pickers, font, Word template upload, table style and extra CSS, plus
list/edit/delete views, an HTML preview and a menu entry with add
button. Access is controlled via the model's Django permissions.

Profiles from the database are offered first in the export form (the
default profile preselected); profiles from PLUGINS_CONFIG still work.

Bump version to 0.2.0 - requires "manage.py migrate".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

netbox_customer_export/branding_views.py

@@ -0,0 +1,93 @@
+"""Verwaltung der Branding-Profile in der NetBox-Oberfläche."""
+from django.contrib import messages
+from django.contrib.auth.mixins import PermissionRequiredMixin
+from django.http import HttpResponse
+from django.shortcuts import get_object_or_404, redirect, render
+from django.utils import timezone
+from django.views import View
+
+from .blocks import KV, P, T, Document, H
+from .branding import _normalize
+from .forms import BrandingProfileForm
+from .models import BrandingProfile
+from .renderers.html import render_html
+
+APP = "netbox_customer_export"
+
+
+class BrandingListView(PermissionRequiredMixin, View):
+    permission_required = f"{APP}.view_brandingprofile"
+
+    def get(self, request):
+        return render(request, f"{APP}/branding_list.html", {"profiles": BrandingProfile.objects.all()})
+
+
+class BrandingEditView(PermissionRequiredMixin, View):
+    template_name = f"{APP}/branding_edit.html"
+
+    def get_permission_required(self):
+        return [f"{APP}.{'change' if self.kwargs.get('pk') else 'add'}_brandingprofile"]
+
+    def _obj(self, pk):
+        return get_object_or_404(BrandingProfile, pk=pk) if pk else BrandingProfile()
+
+    def get(self, request, pk=None):
+        obj = self._obj(pk)
+        return render(request, self.template_name, {"object": obj, "form": BrandingProfileForm(instance=obj)})
+
+    def post(self, request, pk=None):
+        obj = self._obj(pk)
+        form = BrandingProfileForm(request.POST, request.FILES, instance=obj)
+        if form.is_valid():
+            obj = form.save()
+            messages.success(request, f"Branding-Profil „{obj}“ gespeichert.")
+            return redirect(f"plugins:{APP}:branding_list")
+        return render(request, self.template_name, {"object": obj, "form": form})
+
+
+class BrandingDeleteView(PermissionRequiredMixin, View):
+    permission_required = f"{APP}.delete_brandingprofile"
+
+    def get(self, request, pk):
+        return render(request, f"{APP}/branding_delete.html", {"object": get_object_or_404(BrandingProfile, pk=pk)})
+
+    def post(self, request, pk):
+        obj = get_object_or_404(BrandingProfile, pk=pk)
+        name = str(obj)
+        for f in (obj.logo, obj.docx_template):
+            if f:
+                f.delete(save=False)
+        obj.delete()
+        messages.success(request, f"Branding-Profil „{name}“ gelöscht.")
+        return redirect(f"plugins:{APP}:branding_list")
+
+
+class BrandingPreviewView(PermissionRequiredMixin, View):
+    """Beispieldokument (HTML) mit dem Profil – zum Prüfen von Farben und Logo."""
+
+    permission_required = f"{APP}.view_brandingprofile"
+
+    def get(self, request, pk):
+        obj = get_object_or_404(BrandingProfile, pk=pk)
+        blocks = [
+            H(1, "Übersicht"),
+            KV([("Standort", "Musterstandort"), ("Status", "Aktiv"), ("Anschrift", "Musterstraße 1\n12345 Musterstadt")]),
+            H(2, "Geräte"),
+            T(
+                ["Name", "Hersteller / Modell", "Rack / HE", "Management-IP"],
+                [
+                    ["SW-CORE-01", "HPE Aruba 6100", "Rack A / HE 20", "10.0.0.2/24"],
+                    ["SW-ACC-01", "HPE Aruba 6000", "Rack A / HE 18", "10.0.0.3/24"],
+                    ["FW-01", "Sophos XGS 2100", "Rack A / HE 16", "10.0.0.1/24"],
+                ],
+            ),
+            P("So sehen Überschriften, Tabellen und Fließtext mit diesem Profil aus."),
+        ]
+        doc = Document(
+            title="Netzwerkdokumentation Vorschau",
+            subtitle="Beispielkunde",
+            blocks=blocks,
+            meta={"author": request.user.username, "date": timezone.localtime().strftime("%d.%m.%Y")},
+            branding=_normalize(obj.as_branding()),
+        )
+        return HttpResponse(render_html(doc), content_type="text/html; charset=utf-8")