Add Django site, Docker packaging, and beta/prod Gitea deploys.

Unignore site/ (was blocked by mkdocs /site rule), add compose/Docker/uv tooling, and split deploys so push to main goes to beta while prod stays manual.

site/contacts/admin.py

@@ -0,0 +1,33 @@
+from django.contrib import admin
+
+from contacts.models import ConsentRecord, Contact, Suppression
+
+
+class ConsentInline(admin.TabularInline):
+    model = ConsentRecord
+    extra = 0
+
+
+class SuppressionInline(admin.TabularInline):
+    model = Suppression
+    extra = 0
+
+
+@admin.register(Contact)
+class ContactAdmin(admin.ModelAdmin):
+    list_display = ("email", "first_name", "last_name", "phone", "source", "created_at")
+    search_fields = ("email", "first_name", "last_name", "phone")
+    list_filter = ("source",)
+    fields = (
+        "email",
+        "first_name",
+        "last_name",
+        "phone",
+        "postal_address",
+        "source",
+        "notes",
+        "created_at",
+        "updated_at",
+    )
+    readonly_fields = ("created_at", "updated_at")
+    inlines = [ConsentInline, SuppressionInline]