docs(0.S): the doc fences migrated by ludic migrate state; LANGUAGE.md's state section says what the tool and the checker do now; no module-level var left in the docs

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

docs/language/list/list-clear.md

@@ -18,10 +18,12 @@ Parameters:
 
 ```ludic
 program FrameHits {
-  var hits: []int = new []int
+  state FrameHitsState {
+    hits: []int = new []int
+  }
 
-  handler BeginFrame phase Update {
-    List.clear(hits)   # start the frame with an empty list
+  handler BeginFrame(frame_hits_st: FrameHitsState) phase Update {
+    List.clear(frame_hits_st.hits)   # start the frame with an empty list
   }
 }
 ```

docs/language/list/list-contains.md

@@ -19,12 +19,14 @@ Parameters:
 
 ```ludic
 program Visited {
-  var seen: []int = new []int
+  state VisitedState {
+    seen: []int = new []int
+  }
 
-  handler Step phase Update {
+  handler Step(visited_st: VisitedState) phase Update {
     let tile = 42
-    if not List.contains(seen, tile) {
-      List.push(seen, tile)
+    if not List.contains(visited_st.seen, tile) {
+      List.push(visited_st.seen, tile)
     }
   }
 }

docs/language/list/list-first.md

@@ -18,11 +18,13 @@ Parameters:
 
 ```ludic
 program Queue {
-  var waiting: []int = new []int
+  state QueueState {
+    waiting: []int = new []int
+  }
 
-  handler Serve phase Update {
-    if List.len(waiting) > 0 {
-      let next = List.first(waiting)
+  handler Serve(queue_st: QueueState) phase Update {
+    if List.len(queue_st.waiting) > 0 {
+      let next = List.first(queue_st.waiting)
     }
   }
 }

docs/language/list/list-index_of.md

@@ -19,12 +19,14 @@ Parameters:
 
 ```ludic
 program FindSlot {
-  var ids: []int = new []int
+  state FindSlotState {
+    ids: []int = new []int
+  }
 
-  handler Locate phase Update {
-    let slot = List.index_of(ids, 99)
+  handler Locate(find_slot_st: FindSlotState) phase Update {
+    let slot = List.index_of(find_slot_st.ids, 99)
     if slot >= 0 {
-      List.swap(ids, slot, List.len(ids) - 1)
+      List.swap(find_slot_st.ids, slot, List.len(find_slot_st.ids) - 1)
     }
   }
 }

docs/language/list/list-last.md

@@ -18,11 +18,13 @@ Parameters:
 
 ```ludic
 program Trail {
-  var points: []int = new []int
+  state TrailState {
+    points: []int = new []int
+  }
 
-  handler Head phase Update {
-    if List.len(points) > 0 {
-      let newest = List.last(points)
+  handler Head(trail_st: TrailState) phase Update {
+    if List.len(trail_st.points) > 0 {
+      let newest = List.last(trail_st.points)
     }
   }
 }

docs/language/list/list-len.md

@@ -18,10 +18,12 @@ Parameters:
 
 ```ludic
 program CountEnemies {
-  var enemies: []int = new []int
+  state CountEnemiesState {
+    enemies: []int = new []int
+  }
 
-  handler Report phase Update {
-    let n = List.len(enemies)
+  handler Report(count_enemies_st: CountEnemiesState) phase Update {
+    let n = List.len(count_enemies_st.enemies)
   }
 }
 ```

docs/language/list/list-pop.md

@@ -18,11 +18,13 @@ Parameters:
 
 ```ludic
 program UndoStack {
-  var history: []int = new []int
+  state UndoStackState {
+    history: []int = new []int
+  }
 
-  handler Undo phase Update {
-    if List.len(history) > 0 {
-      let last_action = List.pop(history)
+  handler Undo(undo_stack_st: UndoStackState) phase Update {
+    if List.len(undo_stack_st.history) > 0 {
+      let last_action = List.pop(undo_stack_st.history)
     }
   }
 }

docs/language/list/list-push.md

@@ -19,10 +19,12 @@ Parameters:
 
 ```ludic
 program Collect {
-  var picked: []int = new []int
+  state CollectState {
+    picked: []int = new []int
+  }
 
-  handler Grab phase Update {
-    List.push(picked, 7)
+  handler Grab(collect_st: CollectState) phase Update {
+    List.push(collect_st.picked, 7)
   }
 }
 ```

docs/language/list/list-reverse.md

@@ -18,11 +18,13 @@ Parameters:
 
 ```ludic
 program PathOrder {
-  var path: []int = new []int
+  state PathOrderState {
+    path: []int = new []int
+  }
 
-  handler Finalize phase Update {
+  handler Finalize(path_order_st: PathOrderState) phase Update {
     # path was built from the goal back to the start
-    List.reverse(path)   # now start -> goal
+    List.reverse(path_order_st.path)   # now start -> goal
   }
 }
 ```

docs/language/list/list-swap.md

@@ -20,13 +20,15 @@ Parameters:
 
 ```ludic
 program RemoveFast {
-  var actors: []int = new []int
+  state RemoveFastState {
+    actors: []int = new []int
+  }
 
-  handler Kill phase Update {
+  handler Kill(remove_fast_st: RemoveFastState) phase Update {
     let dead = 2
-    let last = List.len(actors) - 1
-    List.swap(actors, dead, last)   # move it to the end...
-    let removed = List.pop(actors)  # ...then drop it
+    let last = List.len(remove_fast_st.actors) - 1
+    List.swap(remove_fast_st.actors, dead, last)   # move it to the end...
+    let removed = List.pop(remove_fast_st.actors)  # ...then drop it
   }
 }
 ```