wip(0.S3): packages and examples migrated again from their pre-0.S sources in one run

ludic migrate state packages <every example program> packages/ludic.lab/example/plate.ludic
  1804 vars into 126 states, 64 into lets; 23498 edits in 460 files

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

examples/modules/friend_of.ludic

@@ -5,8 +5,8 @@
 import "bank"
 program FriendOf {
   friend module lab of bank
-  entry {
-    add(7)
-    print(`{balance} {total()}`)
+  entry (bank_st: mut BankState) {
+    add(bank_st, 7)
+    print(`{bank_st.balance} {total(bank_st)}`)
   }
 }