feat(js): m10 extensions (pause, restart, speed-up via Frame) with tests

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

fixtures/m10-moves-every.json

@@ -0,0 +1,47 @@
+{
+  "function": "movesEvery",
+  "cases": [
+    {
+      "name": "score-0",
+      "args": [
+        0
+      ],
+      "expected": 8
+    },
+    {
+      "name": "score-2",
+      "args": [
+        2
+      ],
+      "expected": 8
+    },
+    {
+      "name": "score-3",
+      "args": [
+        3
+      ],
+      "expected": 7
+    },
+    {
+      "name": "score-17",
+      "args": [
+        17
+      ],
+      "expected": 3
+    },
+    {
+      "name": "score-18",
+      "args": [
+        18
+      ],
+      "expected": 2
+    },
+    {
+      "name": "score-100",
+      "args": [
+        100
+      ],
+      "expected": 2
+    }
+  ]
+}