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/main.py

@@ -9,7 +9,13 @@ from fastapi.staticfiles import StaticFiles
 from starlette.middleware.base import BaseHTTPMiddleware
 
 from guarddog_nexus.config import config
-from guarddog_nexus.constants import APP_DESCRIPTION, APP_NAME, APP_PACKAGE, STATIC_MOUNT_PATH
+from guarddog_nexus.constants import (
+    APP_DESCRIPTION,
+    APP_NAME,
+    APP_PACKAGE,
+    APP_VERSION,
+    STATIC_MOUNT_PATH,
+)
 from guarddog_nexus.db.engine import init_db
 from guarddog_nexus.i18n import DEFAULT_LANG, LANGUAGES
 from guarddog_nexus.logging_setup import log
@@ -52,7 +58,7 @@ async def lifespan(app: FastAPI):
 
 app = FastAPI(
     title=APP_NAME,
-    version="0.1.0",
+    version=APP_VERSION,
     description=APP_DESCRIPTION,
     lifespan=lifespan,
 )
@@ -71,7 +77,7 @@ if os.path.isdir(STATIC_DIR):
 
 @app.get("/health")
 async def health():
-    return {"status": "ok", "version": "0.1.0"}
+    return {"status": "ok", "version": APP_VERSION}
 
 
 def main():