Merge Move and slide into Move with a 'Collide with solids' toggle

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

tools/e2e.mjs

@@ -582,7 +582,7 @@ try {
   await sleep(200);
 
   // 15b. Solid vs trigger. Put the blue crate 150 to the right of the red one (both 100 wide →
-  //      50 of free travel) and hold ArrowRight: the Mover's "Move and slide" parks the red
+  //      50 of free travel) and hold ArrowRight: the Mover's Move (Collide with solids) parks the red
   //      crate flush against the blue one at world x = −100. Making the blue collider a
   //      trigger lets it pass through instead (the collider is then drawn amber).
   const holdRight = async (ms) => {
@@ -607,7 +607,7 @@ try {
     return w.entities.find((e) => e.objectId === 'o1');
   };
   const blocked = await playAgainstBlue(false);
-  check('Move and slide stops the red crate flush against the blue crate\'s solid collider', blocked && Math.abs(blocked.x - -100) < 0.01, `world x=${blocked?.x}`);
+  check('Move with "Collide with solids" stops the red crate flush against the blue crate\'s solid collider', blocked && Math.abs(blocked.x - -100) < 0.01, `world x=${blocked?.x}`);
   const passed = await playAgainstBlue(true);
   check('a trigger collider does not block (the crate passes through)', passed && passed.x > -100 + 20, `world x=${passed?.x}`);
   await evaluate(`__gm.state.select({ kind: 'object', objectId: 'oc2' })`);