Initial commit: Add project files

templates/dotnet/VerticalSlice/Sql.cs.template

@@ -0,0 +1,11 @@
+namespace __MODULE__.Features.__SLICE__;
+
+internal static class Sql
+{
+    internal const string ReadApprovedContext = """
+        -- SCAFFOLD_ONLY: replace only after schema ownership, explicit columns,
+        -- PIT cutoff, quality gate and key contract are approved in the Slice Spec.
+        select 1 as contract_not_ready
+        where false;
+        """;
+}