Fix: Move trim_at_stop_sequences function before it's used

app.py

@@ -201,6 +201,18 @@ def extract_json_from_text(text: str) -> str:
     raise ValueError("Router output JSON appears truncated.")
 
 
+def trim_at_stop_sequences(text: str) -> Tuple[str, bool]:
+    """Trim text at stop sequences and return trimmed text and whether a stop was found."""
+    earliest = None
+    for stop in STOP_SEQUENCES:
+        idx = text.find(stop)
+        if idx != -1 and (earliest is None or idx < earliest):
+            earliest = idx
+    if earliest is not None:
+        return text[:earliest], True
+    return text, False
+
+
 def is_function_call(text: str) -> bool:
     return bool(TOOL_PATTERN.match(text.strip()))
 
@@ -505,13 +517,4 @@ if __name__ == "__main__":  # pragma: no cover
         server_port=int(os.environ.get("PORT", 7860)),
         show_api=True
     )
-def trim_at_stop_sequences(text: str) -> Tuple[str, bool]:
-    earliest = None
-    for stop in STOP_SEQUENCES:
-        idx = text.find(stop)
-        if idx != -1 and (earliest is None or idx < earliest):
-            earliest = idx
-    if earliest is not None:
-        return text[:earliest], True
-    return text, False