fix(core): add structural sanity guards to prevent post-related VLM hallucinations on search and profile screens

tests/e2e/test_brain_live.py

@@ -1,34 +1,41 @@
-import pytest
-from GramAddict.core.navigation.brain import ask_brain_for_action
-from GramAddict.core.perception.screen_identity import ScreenType
 import logging
 
+import pytest
+
+from GramAddict.core.navigation.brain import ask_brain_for_action
+
 logger = logging.getLogger(__name__)
 
+
 @pytest.mark.live_llm
 def test_brain_recommends_scroll_when_trapped():
     """
-    Test that the real, live LLM Brain correctly deduces that it should 
+    Test that the real, live LLM Brain correctly deduces that it should
     scroll down when the target element is missing and it's trapped.
     """
     goal = "open following list"
     screen = "OWN_PROFILE"
-    available_actions = ["tap profile tab", "tap share button", "press back", "tap reels tab", "tap messages tab", "scroll down", "scroll up"]
+    available_actions = [
+        "tap profile tab",
+        "tap share button",
+        "press back",
+        "tap reels tab",
+        "tap messages tab",
+        "scroll down",
+        "scroll up",
+    ]
     explored_nav_actions = {"tap following list"}
-    
+
     # We query the actual LLM as configured in the environment (e.g. qwen3.5:latest)
     # This prevents regressions where the LLM is misconfigured or returns empty strings.
     brain_action = ask_brain_for_action(
-        goal=goal,
-        screen_type=screen,
-        available_actions=available_actions,
-        explored_actions=explored_nav_actions
+        goal=goal, screen_type=screen, available_actions=available_actions, explored_actions=explored_nav_actions
     )
-    
+
     logger.info(f"Brain action returned: '{brain_action}'")
-    
+
     if brain_action is None or brain_action == "":
         pytest.skip("Brain LLM returned None or empty string. Ollama timeout or hallucination.")
-    
+
     if brain_action != "scroll down":
         pytest.skip(f"VLM chose '{brain_action}' instead of 'scroll down'. Small local models can be flaky.")

tests/e2e/test_goap_loop_prevention.py

@@ -12,9 +12,10 @@ These tests prove:
 Requires: Real XML fixture at tests/fixtures/user_profile_dump.xml
 """
 
-import pytest
 from unittest.mock import patch
 
+import pytest
+
 from GramAddict.core.navigation.planner import GoalPlanner
 from GramAddict.core.perception.screen_identity import ScreenType
 from GramAddict.core.screen_topology import ScreenTopology