fix: Qwen3.5 /nothink 모드 + json_mode 파라미터 추가

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/test_classify.py

@@ -10,7 +10,7 @@ import sys
 from pathlib import Path
 
 sys.path.insert(0, str(Path(__file__).parent.parent / "scripts"))
-from pkm_utils import ollama_generate, PROJECT_ROOT
+from pkm_utils import llm_generate, PROJECT_ROOT
 
 PROMPT_TEMPLATE = (PROJECT_ROOT / "scripts" / "prompts" / "classify_document.txt").read_text()
 
@@ -54,7 +54,7 @@ def run_classify_test(doc: dict) -> dict:
     prompt = PROMPT_TEMPLATE.replace("{document_text}", doc["text"])
 
     try:
-        response = ollama_generate(prompt)
+        response = llm_generate(prompt, json_mode=True)
         result = json.loads(response)
 
         db_match = result.get("domain_db") == doc["expected_db"]