js-on-sx: String.fromCharCode + parseInt + parseFloat

String global with fromCharCode (variadic). parseInt truncates via
js-math-trunc; parseFloat delegates to js-to-number. Wired into
js-global.

381/383 unit (+5), 148/148 slice unchanged.

lib/js/test.sh

@@ -981,8 +981,21 @@ cat > "$TMPFILE" << 'EPOCHS'
 (epoch 1803)
 (eval "(js-eval \"({x:1}).valueOf().x\")")
 
+;; ── Phase 11.fromCharCode: String/parseInt/parseFloat ──────────
+(epoch 1900)
+(eval "(js-eval \"String.fromCharCode(65)\")")
+(epoch 1901)
+(eval "(js-eval \"String.fromCharCode(72, 105)\")")
+(epoch 1902)
+(eval "(js-eval \"parseInt('42')\")")
+(epoch 1903)
+(eval "(js-eval \"parseInt(3.7)\")")
+(epoch 1904)
+(eval "(js-eval \"parseFloat('3.14')\")")
+
 EPOCHS
 
+
 OUTPUT=$(timeout 180 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)
 
 check() {
@@ -1505,6 +1518,13 @@ check 1801 "hasOwnProperty no"             'false'
 check 1802 "({}).toString()"               '"[object Object]"'
 check 1803 "obj.valueOf().x"               '1'
 
+# ── Phase 11.fromCharCode / parseInt / parseFloat ──────────────
+check 1900 "String.fromCharCode(65)"        '"A"'
+check 1901 "String.fromCharCode(72,105)"    '"Hi"'
+check 1902 "parseInt('42')"                 '42'
+check 1903 "parseInt(3.7)"                  '3'
+check 1904 "parseFloat('3.14')"             '3.14'
+
 TOTAL=$((PASS + FAIL))
 if [ $FAIL -eq 0 ]; then
   echo "✓ $PASS/$TOTAL JS-on-SX tests passed"