Add demo data purge command

Jenkinsfile

@@ -82,7 +82,7 @@ PY
                     pip install ruff vdt.versionplugin.wheel
                     pip install --upgrade "setuptools==69.5.1" wheel
                     manage.py migrate --no-input --skip-checks
-                    manage.py purge_demo_data
+                    manage.py purge_demo_data --keep-only-idea-products
                     manage.py collectstatic --no-input --verbosity=0
                     pip install "httpx<0.28"
                 '''

mandelstudio/management/commands/purge_demo_data.py

@@ -0,0 +1,120 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+from django.core.management.base import BaseCommand
+
+
+IDEA_PRODUCT_TITLES = {
+    "B2B Webshop Starter Blueprint",
+    "AI Product Description System",
+    "High-Converting Landing Page Framework",
+    "Subscription-Based Service Website Model",
+    "Marketplace Platform Architecture (Django)",
+}
+
+
+@dataclass(frozen=True)
+class PurgeStats:
+    pages: int = 0
+    products: int = 0
+
+
+class Command(BaseCommand):
+    help = "Remove demo pages/products from Mandel Blog while preserving idea marketplace content."
+
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "--dry-run",
+            action="store_true",
+            help="Show what would be removed without deleting.",
+        )
+        parser.add_argument(
+            "--keep-only-idea-products",
+            action="store_true",
+            help="Delete all products except the 5 idea marketplace products.",
+        )
+
+    def handle(self, *args, **options):
+        dry_run = bool(options["dry_run"])
+        keep_only_idea_products = bool(options["keep_only_idea_products"])
+
+        page_count = self._purge_pages(dry_run=dry_run)
+        product_count = self._purge_products(
+            dry_run=dry_run,
+            keep_only_idea_products=keep_only_idea_products,
+        )
+        stats = PurgeStats(pages=page_count, products=product_count)
+
+        mode = "DRY RUN" if dry_run else "APPLIED"
+        self.stdout.write(self.style.SUCCESS(f"[{mode}] Removed pages={stats.pages}, products={stats.products}"))
+
+    def _purge_pages(self, *, dry_run: bool) -> int:
+        from wagtail.models import Page
+
+        slug_markers = [
+            "starter-website",
+            "business-website",
+            "demo",
+            "voorbeeld",
+            "sample",
+            "template",
+        ]
+        title_markers = [
+            "starter website",
+            "business website",
+            "demo",
+            "voorbeeld",
+            "sample",
+            "template",
+        ]
+
+        qs = (
+            Page.objects.exclude(depth=1)
+            .exclude(slug__in=["home"])
+            .specific()
+        )
+
+        candidates = []
+        for page in qs:
+            slug = (page.slug or "").lower()
+            title = (page.title or "").lower()
+            if any(marker in slug for marker in slug_markers) or any(
+                marker in title for marker in title_markers
+            ):
+                candidates.append(page)
+
+        removed = 0
+        for page in candidates:
+            removed += 1
+            self.stdout.write(f"PAGE {'[dry-run] ' if dry_run else ''}delete id={page.id} slug={page.slug} title={page.title}")
+            if not dry_run:
+                page.delete()
+        return removed
+
+    def _purge_products(self, *, dry_run: bool, keep_only_idea_products: bool) -> int:
+        from oscar.core.loading import get_model
+
+        Product = get_model("catalogue", "Product")
+        products = Product.objects.all()
+
+        if keep_only_idea_products:
+            candidates = products.exclude(title__in=IDEA_PRODUCT_TITLES)
+        else:
+            title_markers = ["demo", "sample", "placeholder", "starter website", "business website"]
+            candidates = [
+                p
+                for p in products
+                if any(marker in (p.title or "").lower() for marker in title_markers)
+            ]
+
+        removed = 0
+        iterable = candidates if isinstance(candidates, list) else list(candidates)
+        for product in iterable:
+            removed += 1
+            self.stdout.write(
+                f"PRODUCT {'[dry-run] ' if dry_run else ''}delete id={product.id} title={product.title}"
+            )
+            if not dry_run:
+                product.delete()
+        return removed