refactor: фаза 5 — чистка (APP_VERSION, LLM константы)

- constants.py: APP_VERSION, LLM_DEFAULT_TEMPERATURE, LLM_RESPONSE_FORMAT
- main.py: версия из APP_VERSION (вместо хардкод '0.1.0'×2)
- llm.py: temperature и response_format из constants

Всего: 85 тестов, ruff clean

guarddog_nexus/core/llm.py

@@ -9,7 +9,7 @@ import json
 import httpx
 
 from ..config import config
-from ..constants import LLM_ANALYSIS_SYSTEM_PROMPT
+from ..constants import LLM_ANALYSIS_SYSTEM_PROMPT, LLM_DEFAULT_TEMPERATURE, LLM_RESPONSE_FORMAT
 from ..logging_setup import log
 
 _llm_semaphore = asyncio.Semaphore(config.llm_max_concurrent)
@@ -60,8 +60,8 @@ async def analyze_finding(finding_data: dict) -> dict | None:
             {"role": "system", "content": LLM_ANALYSIS_SYSTEM_PROMPT},
             {"role": "user", "content": _build_user_message(finding_data)},
         ],
-        "temperature": 0.3,
-        "response_format": {"type": "json_object"},
+        "temperature": LLM_DEFAULT_TEMPERATURE,
+        "response_format": {"type": LLM_RESPONSE_FORMAT},
     }
 
     try: