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/text/text-char_at.md

@@ -19,7 +19,7 @@ Parameters:
 
 ```ludic
 program FirstIsDigit {
-  var entry: string = "7up"
+  let entry: string = "7up"
 
   handler Check phase Update {
     let c = Text.char_at(entry, 0)

docs/language/text/text-concat.md

@@ -19,7 +19,7 @@ Parameters:
 
 ```ludic
 program Greeting {
-  var name: string = "world"
+  let name: string = "world"
 
   handler Build phase Update {
     let line = Text.concat("hello ", name)   # "hello world"

docs/language/text/text-contains.md

@@ -19,7 +19,7 @@ Parameters:
 
 ```ludic
 program Filter {
-  var line: string = "error: disk full"
+  let line: string = "error: disk full"
 
   handler Scan phase Update {
     if Text.contains(line, "error") {

docs/language/text/text-ends_with.md

@@ -19,7 +19,7 @@ Parameters:
 
 ```ludic
 program IsImage {
-  var filename: string = "hero.png"
+  let filename: string = "hero.png"
 
   handler Classify phase Update {
     let png = Text.ends_with(filename, ".png")   # true

docs/language/text/text-equals.md

@@ -19,8 +19,8 @@ Parameters:
 
 ```ludic
 program Guess {
-  var answer: string = "swordfish"
-  var attempt: string = "swordfish"
+  let answer: string = "swordfish"
+  let attempt: string = "swordfish"
 
   handler Check phase Update {
     if Text.equals(attempt, answer) {

docs/language/text/text-from_int.md

@@ -18,7 +18,7 @@ Parameters:
 
 ```ludic
 program ScoreLabel {
-  var score: int = 1500
+  let score: int = 1500
 
   handler Build phase Update {
     let label = Text.concat("score: ", Text.from_int(score))

docs/language/text/text-index_of.md

@@ -19,7 +19,7 @@ Parameters:
 
 ```ludic
 program KeyValue {
-  var pair: string = "hp=42"
+  let pair: string = "hp=42"
 
   handler Parse phase Update {
     let eq = Text.index_of(pair, "=")            # 2

docs/language/text/text-length.md

@@ -18,7 +18,7 @@ Parameters:
 
 ```ludic
 program NameWidth {
-  var label: string = "player one"
+  let label: string = "player one"
 
   handler Draw phase Render {
     let width = Text.length(label) * 6   # 6 px per glyph

docs/language/text/text-slice.md

@@ -20,7 +20,7 @@ Parameters:
 
 ```ludic
 program FirstWord {
-  var line: string = "hello world"
+  let line: string = "hello world"
 
   handler Split phase Update {
     let space = Text.index_of(line, " ")   # 5

docs/language/text/text-starts_with.md

@@ -19,7 +19,7 @@ Parameters:
 
 ```ludic
 program Command {
-  var input: string = "/say hello"
+  let input: string = "/say hello"
 
   handler Parse phase Update {
     if Text.starts_with(input, "/say ") {

docs/language/text/text-to_float.md

@@ -18,7 +18,7 @@ Parameters:
 
 ```ludic
 program ParseSpeed {
-  var typed: string = "3.2"
+  let typed: string = "3.2"
 
   handler Apply phase Update {
     let speed = Text.to_float(typed)   # 3.2

docs/language/text/text-to_int.md

@@ -18,7 +18,7 @@ Parameters:
 
 ```ludic
 program ParseAmount {
-  var typed: string = "250"
+  let typed: string = "250"
 
   handler Apply phase Update {
     let gold = Text.to_int(typed)   # 250