Add Quafu backend adapter with OpenQASM support and make t1s and t2s properties optional in BackendAdapter protocol (#12)

* feat: make t1s and t2s properties optional in BackendAdapter protocol

* feat: Add Quafu backend adapter with OpenQASM support and improved error handling

Author: marcosUNLP

src/qonscious/adapters/__init__.py

@@ -1,13 +1,56 @@
-from .aer_sampler_adapter import AerSamplerAdapter
-from .aer_simulator_adapter import AerSimulatorAdapter
-from .backend_adapter import BackendAdapter
-from .ibm_sampler_adapter import IBMSamplerAdapter
-from .ionq_backend_adapter import IonQBackendAdapter
-
-__all__ = [
-    "BackendAdapter",
-    "AerSamplerAdapter",
-    "IonQBackendAdapter",
-    "AerSimulatorAdapter",
-    "IBMSamplerAdapter",
-]
+# Todos los imports con manejo de errores
+_adapters = {}
+
+try:
+    from .aer_sampler_adapter import AerSamplerAdapter
+    _adapters["AerSamplerAdapter"] = AerSamplerAdapter
+except ImportError as e:
+    AerSamplerAdapter = None
+    print(f"⚠️  AerSamplerAdapter no disponible: {e}")
+
+try:
+    from .aer_simulator_adapter import AerSimulatorAdapter
+    _adapters["AerSimulatorAdapter"] = AerSimulatorAdapter
+except ImportError as e:
+    AerSimulatorAdapter = None
+    print(f"⚠️  AerSimulatorAdapter no disponible: {e}")
+
+try:
+    from .ibm_sampler_adapter import IBMSamplerAdapter
+    _adapters["IBMSamplerAdapter"] = IBMSamplerAdapter
+except ImportError as e:
+    IBMSamplerAdapter = None
+    print(f"⚠️  IBMSamplerAdapter no disponible: {e}")
+
+try:
+    from .ionq_backend_adapter import IonQBackendAdapter
+    _adapters["IonQBackendAdapter"] = IonQBackendAdapter
+except ImportError as e:
+    IonQBackendAdapter = None
+    print(f"⚠️  IonQBackendAdapter no disponible: {e}")
+
+try:
+    from .quafu_backend_adapter import QuafuBackendAdapter
+    _adapters["QuafuBackendAdapter"] = QuafuBackendAdapter
+except ImportError as e:
+    QuafuBackendAdapter = None
+    print(f"⚠️  QuafuBackendAdapter no disponible: {e}")
+
+# BackendAdapter es esencial - si falla, hay un problema grave
+try:
+    from .backend_adapter import BackendAdapter
+    _adapters["BackendAdapter"] = BackendAdapter
+except ImportError as e:
+    raise ImportError(f"❌ BackendAdapter esencial no disponible: {e}")
+
+# Hacer disponibles todos en el namespace
+globals().update(_adapters)
+
+# Solo exportar los que se importaron correctamente
+__all__ = list(_adapters.keys())
+
+# Información de disponibilidad
+available_adapters = {name: adapter is not None for name, adapter in _adapters.items()}
+__all__.append("available_adapters")
+
+print(f"✅ Adapters cargados: {len(_adapters)}/{len(__all__)-1}")

src/qonscious/adapters/backend_adapter.py

@@ -20,18 +20,20 @@ def n_qubits(self) -> int:
         ...
 
     @property
-    def t1s(self) -> dict[int, float]:
+    def t1s(self) -> dict[int, float] | None:
         """
         Returns:
-            dict[int, float]: The T1 (relaxation time) for each qubit.
+            dict[int, float] | None: The T1 (relaxation time) for each qubit, 
+            or None if not available.
         """
         ...
 
     @property
-    def t2s(self) -> dict[int, float]:
+    def t2s(self) -> dict[int, float] | None:
         """
         Returns:
-            dict[int, float]: The T2 (dephasing time) for each qubit.
+            dict[int, float] | None: The T2 (dephasing time) for each qubit,
+            or None if not available.
         """
         ...