fix: resolve ImportError in /api/health/full — _sb2/_sb_fallback not in state.py [Manus 2026-08-08]

api/providers.py

@@ -788,7 +788,11 @@ async def health_full(role: AuthRole = Depends(require_role(AuthRole.MACHINE))):
             return {"ok": False, "error": str(exc)[:100]}
 
     # ── Esegui tutti i check in parallelo ─────────────────────────────────────
-    from .state import _sb as _sb_h, _sb2 as _sb2_h, _sb_fallback as _sbf_h
+    from .state import _sb as _sb_h, _clients as _sb_clients_h
+    # FIX-HEALTH-FULL: _sb2 e _sb_fallback non esistono in state.py.
+    # Estraiamo i client dal pool _clients (A=primary, B=secondary, C=fallback).
+    _sb2_h = _sb_clients_h[1]["client"] if len(_sb_clients_h) > 1 else None
+    _sbf_h = _sb_clients_h[2]["client"] if len(_sb_clients_h) > 2 else None
 
     (
         c_sb1,
@@ -932,3 +936,4 @@ async def update_provider_models(role: AuthRole = Depends(require_role(AuthRole.
     }
 
 
+