wip(0.S3): packages and examples migrated in one run - ludic migrate state packages <every example program> packages/ludic.lab/example/plate.ludic

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

examples/events/recurse.ludic

@@ -6,16 +6,18 @@
 #
 # Running it prints:  16   (the cycle bottoms out at the depth cap, deterministically)
 program Recurse {
-  var n: int = 0
+  state RecurseState {
+    n: int = 0
+  }
 
   event Ping { }
   event Pong { }
 
-  @On(Ping) handler A { n += 1; emit Pong() }   # each Ping deepens by one Pong
+  @On(Ping) handler A(recurse_st: mut RecurseState) { recurse_st.n += 1; emit Pong() }   # each Ping deepens by one Pong
   @On(Pong) handler B { emit Ping() }              # ...and each Pong by one Ping
 
-  entry {
+  entry (recurse_st: RecurseState) {
     emit Ping()
-    print(n)
+    print(recurse_st.n)
   }
 }