Remove automatic generated property columns

The columns could only be text, since a typed column makes Cypher writes
fail on values of another type. Leave typed columns and views to the
database administrator instead, and document how to set them up.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

bridge/peo/backend.py

@@ -337,9 +337,6 @@ class Session:
             raise BoltFailure("Neo.ClientError.Statement.ArgumentError",
                               f"Invalid graph name '{name}': AGE graph names must be 3-63 characters "
                               "of letters, digits, '_', '.' or '-', starting with a letter or '_'.")
-        if name == "peo":
-            raise BoltFailure("Neo.ClientError.Statement.ArgumentError",
-                              "The name 'peo' is reserved: it is the schema of peo's own SQL helpers.")
         if name in await self.graphs():
             if if_not_exists:
                 return Result([], query_type="s")