Resolve direct advanced Sneak arrivals

tests/ambassador-terror-overlap-worm.test.ts

@@ -69,6 +69,20 @@ function ready(state: Game) {
 }
 const queuedRide = { kind: 'wormRide', player: 'in', territory: 'hagga_basin' } as const;
 
+void test('Advanced worm Sneak shows the temporary positive-entry guard and preserves the ride on zero', () => {
+  const { g } = table('sneakAttack');
+  let state = wormRide(g);
+  assert.match(viewGame(state, 'm').terrorEntry?.sneakAttack?.blocked ?? '', /worm ride/);
+  state = action(state, 'm', {type:'decision', reveal:true});
+  const before = structuredClone(state);
+  assert.throws(() => action(state, 'm', {type:'decision', amount:1}), /worm ride/);
+  assert.deepEqual(state, before);
+  state = action(state, 'm', {type:'decision', amount:0});
+  assert.equal(state.pendingArrivalOverlap?.stage, 'second');
+  state = action(state, 'ec', {type:'decision', event:state.pendingAmbassador!.event, decline:true});
+  assert.deepEqual(state.decision, queuedRide);
+});
+
 void test('Terror first keeps Robbery overflow custody and the ordered arrival intact', () => {
   const { g, terror } = table('robbery');
   seat(g, 'm').hand = g.deck.splice(0, 4);