Fix: page qualys/agents - try/except sur get_activation_keys et get_agents_summary

app/routers/qualys.py

@@ -474,8 +474,14 @@ async def qualys_agents_page(request: Request, db=Depends(get_db)):
     if not can_view(perms, "qualys"):
         return RedirectResponse(url="/dashboard")
 
+    try:
         keys = get_activation_keys(db)
+    except Exception:
+        keys = []
+    try:
         summary = get_agents_summary(db)
+    except Exception:
+        summary = {"statuses": [], "versions": [], "total_assets": 0, "active": 0, "inactive": 0}
 
     # Serveurs en prod sans agent Qualys
     no_agent = db.execute(text("""