feat: rebuild site content management

Replace legacy FAQ, downloads, and release flows with project and blog publishing. Add configurable branding and theme fields plus clean-start Compose seeding support.

apps/pages/urls.py

@@ -7,8 +7,9 @@ app_name = "pages"
 urlpatterns = [
     path("", views.HomeView.as_view(), name="home"),
     path("about/", views.AboutView.as_view(), name="about"),
-    path("faq/", views.FAQView.as_view(), name="faq"),
     path("contact/", views.ContactView.as_view(), name="contact"),
+    path("blog/", views.BlogPostListView.as_view(), name="blog_list"),
+    path("blog/<slug:slug>/", views.BlogPostDetailView.as_view(), name="blog_detail"),
     path(
         "videos/<slug:library>/",
         views.PageVideoArchiveView.as_view(),