test: enforce real VLM execution in explore tab guard and disable fallback hallucination

tests/e2e/test_production_bug_foreign_app_20260501.py

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+import os
+
+from GramAddict.core.perception.intent_resolver import IntentResolver
+from GramAddict.core.perception.spatial_parser import SpatialParser
+
+
+class TestExploreTabGuard:
+    def test_visual_discovery_never_picks_header_for_tab_intent(self, make_real_device_with_image):
+        """
+        Production bug 2026-05-01 22:01: VLM picked the profile header (box 36)
+        instead of the Explore tab at the bottom, which unexpectedly opened the Play Store.
+        We must guard against picking top-screen elements when looking for bottom tabs.
+        This test uses a REAL LLM call via the image to prove we don't hallucinate.
+        """
+        xml_path = os.path.join(os.path.dirname(__file__), "fixtures", "other_profile_real.xml")
+        # We use a dummy valid image so the VLM can process the annotated boxes from the XML.
+        # It won't find the explore tab, so it should return None rather than hallucinating the header.
+        img_path = os.path.join(os.path.dirname(__file__), "..", "fixtures", "user_profile_dump.jpg")
+
+        with open(xml_path, "r", encoding="utf-8") as f:
+            xml = f.read()
+
+        parser = SpatialParser()
+        root = parser.parse(xml)
+        candidates = parser.get_clickable_nodes(root)
+
+        # Real device that returns the real image
+        device = make_real_device_with_image(img_path, xml)
+
+        resolver = IntentResolver()
+        intent = "tap explore tab"
+
+        # This will trigger an actual VLM call since device.screenshot() will return the real image
+        selected_node = resolver.resolve(intent, candidates, device=device, screen_height=2400)
+
+        # Since the explore tab is NOT in the other_profile_real.xml, it must return None.
+        # It must absolutely NOT return the profile header.
+        assert (
+            selected_node is None
+        ), f"Hallucinated a node instead of returning None! Picked: {selected_node.content_desc or selected_node.text}"