test(e2e): purge remaining lying asserts in home and reels tests

Replaced weak 'y_center < 2000' and 'not action_bar' assertions with hard structural and semantic validations for author username clicks.
We now explicitly verify that the VLM selected the correct resource-id or matching text/content-desc.

tests/e2e/test_nav_home_feed.py

@@ -66,9 +66,12 @@ def test_home_feed_post_author_extraction(make_real_device_with_image):
 
     assert result is not None, "Visual discovery returned None for 'tap post author username'"
 
-    # Exclude system UI or bottom nav
-    y_center = result.y1 + (result.y2 - result.y1) / 2
-    assert y_center < 2000, "VLM hallucinated the author in the bottom navigation bar!"
+    rid = (result.resource_id or "").lower()
+    desc = (result.content_desc or "").lower()
+    text = (result.text or "").lower()
+
+    is_author = "row_feed_photo_profile_name" in rid or "millionlords" in desc or "millionlords" in text
+    assert is_author, f"VLM picked wrong element! Selected id='{rid}', desc='{desc}', text='{text}'"
 
 
 @pytest.mark.live_llm

tests/e2e/test_nav_reels.py

@@ -140,10 +140,14 @@ def test_reel_post_author_selects_username(make_real_device_with_image):
     assert result is not None, "Visual discovery returned None for author username on Reel"
 
     rid = (result.resource_id or "").lower()
+    desc = (result.content_desc or "").lower()
+    text = (result.text or "").lower()
 
-    # Must be the author info component, NOT the top action bar
-    assert "action_bar" not in rid, (
-        f"VLM selected the action bar instead of the author username!\n" f"  Selected: id='{result.resource_id}'"
+    # Must be the author info component or username, NOT the top action bar
+    is_author = "author" in rid or "cappadocia.cowboy" in desc or "cappadocia.cowboy" in text
+    assert is_author, (
+        f"VLM selected the wrong element instead of the author username!\n" 
+        f"Selected id='{rid}', desc='{desc}', text='{text}'"
     )