chore: Switch to this repository from predecessor

trans/statics.stx

@@ -1,12 +1,15 @@
 module statics
 
-// see README.md for details on how to switch to multi-file analysis
+imports signatures/fostr-sig
+
+// see docs/implementation.md for details on how to switch to multi-file analysis
 
 rules // single-file entry point
 
-  programOk : Start
+  programOk : Ex
 
-  programOk(Empty()).
+  programOk(Sum(_)).
+  programOk(Receives(_,_)).
 
 rules // multi-file entry point
 
@@ -14,11 +17,6 @@ rules // multi-file entry point
 
   projectOk(s).
 
-  fileOk : scope * Start
+  fileOk : scope * Ex
 
-  fileOk(s, Empty()).
-
-signature
-
-  sorts Start constructors
-    Empty : Start
+  fileOk(s, Receives(_,_)).