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/core/tests/test_site_branding.py

@@ -59,3 +59,16 @@ class SiteBrandingTemplateTests(TestCase):
 
         self.assertContains(response, "images/com2care-mark.svg")
         self.assertContains(response, "images/com2care-care-team.jpg")
+
+    def test_site_identity_and_theme_are_admin_configurable(self):
+        branding = SiteBranding.load()
+        branding.site_name = "Care Research Network"
+        branding.short_name = "CRN"
+        branding.primary_color = "#123456"
+        branding.save()
+
+        response = self.client.get(reverse("pages:home"))
+
+        self.assertContains(response, "Care Research Network")
+        self.assertContains(response, ">CRN</span>")
+        self.assertContains(response, "--accent-blue:#123456")