Implement NetKingdom identity shell for coulomb.social (CSOC-WP-0002)

Django scaffold aligned with the business delivery lane: tenant-keyed
Member model without passwords, identity app as sole OIDC/session
boundary, dev-claims login, authenticated /app/ shell, ADR-0001, and
tests. T01/T02/T05/T06 done; OIDC registration, real user-engine HTTP,
flex-auth, and packaging remain open.

coulomb_social/apps/identity/urls.py

@@ -0,0 +1,12 @@
+from django.urls import path
+
+from . import views
+
+app_name = "identity"
+
+urlpatterns = [
+    path("login/", views.login_start, name="login"),
+    path("callback/", views.oidc_callback, name="callback"),
+    path("logout/", views.logout_view, name="logout"),
+    path("dev-login/", views.dev_login, name="dev_login"),
+]