Improve Auth & Session

authenticationsystem.capnp

@@ -88,6 +88,9 @@ struct Response {
             # was established by the SASL exchange.
 
             session @4 :Session;
+            # The session that was created. It grants access to all capabilities the connecting
+            # party has permissions for.
+
             additionalData @5 :Data;
             # SASL may send additional data with the successful result. This MAY be a NULL-ptr or a
             # non-NULL list ptr of zero bytes which clients MUST pass to their SASL implementation

connection.capnp

@@ -42,9 +42,7 @@ interface Bootstrap
 }
 
 struct Session {
-    me @0 :Text;
-
-    machineSystem @1 : MachineSystem;
-    userSystem @2 : UserSystem;
-    permissionSystem @3 : PermissionSystem;
+    machineSystem @0 : MachineSystem;
+    userSystem @1 : UserSystem;
+    permissionSystem @2 : PermissionSystem;
 }