Flatten _text_run_ids output (input_ids is [1,seq])

src/h3_blackwell_runtime/qwen3vl_vision.py

@@ -384,7 +384,9 @@ def _text_run_ids(prompt: str) -> list[int]:
     tokenizer_dir = Path(__file__).with_name("qwen25_tokenizer")
     if not tokenizer_dir.exists():
         raise FileNotFoundError(f"Qwen tokenizer directory missing: {tokenizer_dir}")
-    return H3PromptTokenizer(tokenizer_dir)(prompt or " ")
+    ids = H3PromptTokenizer(tokenizer_dir)(prompt or " ")
+    # input_ids is [1, seq]; flatten to a Python list of ints.
+    return [int(t) for t in ids.reshape(-1).tolist()]
 
 
 @dataclass