Clean up paired expressions and Krea ages

prompt_builder.py

@@ -523,6 +523,14 @@ def _choose_text(rng: random.Random, items: list[Any]) -> str:
     return _item_text(item)
 
 
+def _choose_distinct_text(rng: random.Random, items: list[Any], first_text: str) -> str:
+    first_text = _item_text(first_text).lower()
+    distinct = [item for item in items if _item_text(item).lower() != first_text]
+    if not distinct:
+        return ""
+    return _choose_text(rng, distinct)
+
+
 def _choose_pair(rng: random.Random, items: list[Any]) -> tuple[str, str]:
     return _pair_from(_weighted_choice(rng, items))
 
@@ -1803,7 +1811,9 @@ def _build_custom_row(
     )
     expression = _choose_text(expression_rng, expression_entries)
     if subject_type in ("couple", "group") and ";" not in expression:
-        expression = f"{expression}; {_choose_text(expression_rng, expression_entries)}"
+        secondary_expression = _choose_distinct_text(expression_rng, expression_entries, expression)
+        if secondary_expression:
+            expression = f"{expression}; {secondary_expression}"
     composition = _choose_text(
         composition_rng,
         _compatible_entries(_composition_pool(category, subcategory, item, subject_type), women_count, men_count),