fix(tests): purge MagicMock, fix ad fixtures, improve pre-commit E2E fallback

- test_device_connection.py: replace MagicMock with SimpleNamespace to satisfy mock ban
- test_is_ad_substring.py: add feed context markers — is_ad only checks exact labels in feed context
- pre_commit_tests.sh: smart E2E test discovery by module name words, preventing false coverage failures
- conftest.py: fix profile tab visual discovery regex (case-insensitive desc match)
- test_production_bug_regression.py: fix TelepathicEngine singleton poisoning via monkeypatch

tests/unit/test_device_connection.py

@@ -16,7 +16,7 @@ def test_create_device_connection_failure(monkeypatch, caplog):
 
     import subprocess
     from collections import namedtuple
-    from unittest.mock import MagicMock
+    from types import SimpleNamespace
 
     import uiautomator2 as u2
 
@@ -26,7 +26,9 @@ def test_create_device_connection_failure(monkeypatch, caplog):
     CompletedProcess = namedtuple("CompletedProcess", ["stdout", "stderr", "returncode"])
     # Case 2: Proactive discovery with NO devices
     monkeypatch.setattr(
-        subprocess, "run", lambda *args, **kwargs: MagicMock(stdout="List of devices attached\n\n", return_code=0)
+        subprocess,
+        "run",
+        lambda *args, **kwargs: SimpleNamespace(stdout="List of devices attached\n\n", returncode=0),
     )
     with pytest.raises(SystemExit):
         create_device("192.168.1.100:5555", "com.instagram.android", None)
@@ -35,7 +37,9 @@ def test_create_device_connection_failure(monkeypatch, caplog):
     monkeypatch.setattr(
         subprocess,
         "run",
-        lambda *args, **kwargs: MagicMock(stdout="List of devices attached\n10.0.0.5:5555\tdevice\n", return_code=0),
+        lambda *args, **kwargs: SimpleNamespace(
+            stdout="List of devices attached\n10.0.0.5:5555\tdevice\n", returncode=0
+        ),
     )
     with pytest.raises(SystemExit):
         create_device("192.168.1.100:5555", "com.instagram.android", None)

tests/unit/test_is_ad_substring.py

@@ -5,6 +5,7 @@ def test_is_ad_false_positive_abroad():
     # Simulate an IG node with 'abroad' in the text
     xml_false_positive = """<?xml version="1.0"?>
     <hierarchy>
+        <node resource-id="com.instagram.android:id/row_feed_profile_header" text="" content-desc="" />
         <node resource-id="com.instagram.android:id/secondary_label" text="brunette_abroad" content-desc="" />
     </hierarchy>"""
 
@@ -14,6 +15,7 @@ def test_is_ad_false_positive_abroad():
 def test_is_ad_true_positive():
     xml_true_positive = """<?xml version="1.0"?>
     <hierarchy>
+        <node resource-id="com.instagram.android:id/row_feed_profile_header" text="" content-desc="" />
         <node resource-id="com.instagram.android:id/secondary_label" text="Sponsored" content-desc="" />
     </hierarchy>"""
 
@@ -23,6 +25,7 @@ def test_is_ad_true_positive():
 def test_is_ad_true_positive_ad_word():
     xml_ad = """<?xml version="1.0"?>
     <hierarchy>
+        <node resource-id="com.instagram.android:id/row_feed_profile_header" text="" content-desc="" />
         <node resource-id="com.instagram.android:id/secondary_label" text="Ad" content-desc="" />
     </hierarchy>"""