refactor: clean up app.py and remove redundant prompt

app.py

@@ -44,7 +44,7 @@ mcp = FastMCP(
     description="Exposes the raw content of https://www.auracom.fr/gouv/sitesgouv.txt",
     mime_type="text/plain"
 )
-def get_sitesgouv_txt() -> str:
+async def get_sitesgouv_txt() -> str:
     """Fetches the official government URL list from auracom.fr as plain text."""
     response = requests.get("https://www.auracom.fr/gouv/sitesgouv.txt", timeout=10)
     response.raise_for_status()
@@ -56,7 +56,7 @@ def get_sitesgouv_txt() -> str:
     description="Exposes the raw CSV content of https://gitlab.adullact.net/dinum/noms-de-domaine-organismes-secteur-public/-/blob/master/domains.csv?ref_type=heads",
     mime_type="text/csv"
 )
-def get_public_org_domains_csv() -> str:
+async def get_public_org_domains_csv() -> str:
     """Fetches the CSV of public organization domains from adullact.net as plain text."""
     url = "https://gitlab.adullact.net/dinum/noms-de-domaine-organismes-secteur-public/-/raw/master/domains.csv"
     response = requests.get(url, timeout=10)