fix(energy): align AuthorizedClientType with Tesla protobuf enum

Replace placeholder LAN=1 with the three values defined in Tesla's
AuthorizedClientType enum, as reverse-engineered in pypowerwall's
tedapi_combined.proto:

  INVALID = 0
  CUSTOMER_MOBILE_APP = 1
  VEHICLE = 2

There is no WiFi-specific value — WiFi vs LAN refers to the transport,
not the client type. pypowerwall registers its RSA key as
CUSTOMER_MOBILE_APP, so that becomes the default for add_authorized_client.

Also document that AuthorizedClientKeyType.RSA=1 is empirically derived;
Tesla has not published the full key_type enum body publicly.

Author: claude

tesla_fleet_api/const.py

@@ -209,15 +209,31 @@ class EnergyDeviceIdentifierType(IntEnum):
 
 
 class AuthorizedClientKeyType(IntEnum):
-    """Key type for energy gateway authorized clients."""
+    """Key type for energy gateway authorized clients.
+
+    Note: Tesla has not published the full ``key_type`` enum body. The RSA
+    value below is empirically known to work for registering an RSA-4096
+    key via ``add_authorized_client_request``; other values may exist but
+    are not publicly documented.
+    """
 
     RSA = 1
 
 
 class AuthorizedClientType(IntEnum):
-    """Client type used when registering an authorized client on an energy gateway."""
+    """Client type used when registering an authorized client on an energy gateway.
+
+    Sourced from Tesla's ``AuthorizedClientType`` protobuf enum (as
+    reverse-engineered in pypowerwall's ``tedapi_combined.proto``).
+
+    There is no WiFi-specific value: WiFi vs LAN refers to the transport,
+    not the client type. pypowerwall's v1r flow registers its RSA key as
+    ``CUSTOMER_MOBILE_APP``.
+    """
 
-    LAN = 1
+    INVALID = 0
+    CUSTOMER_MOBILE_APP = 1
+    VEHICLE = 2
 
 
 class AuthorizedClientState(IntEnum):

tesla_fleet_api/tesla/energysite.py

@@ -74,7 +74,8 @@ async def add_authorized_client(
         public_key: bytes | str,
         description: str = "Powerwall LAN Client",
         key_type: AuthorizedClientKeyType | int = AuthorizedClientKeyType.RSA,
-        authorized_client_type: AuthorizedClientType | int = AuthorizedClientType.LAN,
+        authorized_client_type: AuthorizedClientType
+        | int = AuthorizedClientType.CUSTOMER_MOBILE_APP,
     ) -> dict[str, Any]:
         """Register an authorized client (public key) with the energy gateway.