Remove legacy compatibility shims: attribute_adapter.py, bypass_serialization

Breaking changes:
- Remove attribute_adapter.py entirely (hard deprecate)
- Remove bypass_serialization flag from blob.py - blobs always serialize now
- Remove unused 'database' field from Attribute in heading.py

Import get_adapter from attribute_type instead of attribute_adapter.

Co-authored-by: dimitri-yatsenko <dimitri@datajoint.com>

Author: claude

src/datajoint/attribute_adapter.py

@@ -56,8 +56,6 @@
 
 compression = {b"ZL123\0": zlib.decompress}
 
-bypass_serialization = False  # runtime setting to bypass blob (en|de)code
-
 # runtime setting to read integers as 32-bit to read blobs created by the 32-bit
 # version of the mYm library for MATLAB
 use_32bit_dims = False
@@ -507,17 +505,9 @@ def pack(self, obj, compress):
 
 
 def pack(obj, compress=True):
-    if bypass_serialization:
-        # provide a way to move blobs quickly without de/serialization
-        assert isinstance(obj, bytes) and obj.startswith((b"ZL123\0", b"mYm\0", b"dj0\0"))
-        return obj
     return Blob().pack(obj, compress=compress)
 
 
 def unpack(blob, squeeze=False):
-    if bypass_serialization:
-        # provide a way to move blobs quickly without de/serialization
-        assert isinstance(blob, bytes) and blob.startswith((b"ZL123\0", b"mYm\0", b"dj0\0"))
-        return blob
     if blob is not None:
         return Blob(squeeze=squeeze).unpack(blob)

src/datajoint/blob.py

@@ -9,7 +9,7 @@
 
 import pyparsing as pp
 
-from .attribute_adapter import get_adapter
+from .attribute_type import get_adapter
 from .condition import translate_attribute
 from .errors import DataJointError
 from .settings import config

src/datajoint/declare.py

@@ -5,7 +5,7 @@
 
 import numpy as np
 
-from .attribute_adapter import get_adapter
+from .attribute_type import get_adapter
 from .attribute_type import AttributeType
 from .declare import (
     CORE_TYPE_NAMES,
@@ -65,7 +65,6 @@ def decode(self, stored, *, key=None):
     store=None,
     unsupported=False,
     attribute_expression=None,
-    database=None,
     dtype=object,
 )
 
@@ -282,7 +281,6 @@ def _init_from_database(self):
         for attr in attributes:
             attr.update(
                 in_key=(attr["in_key"] == "PRI"),
-                database=database,
                 nullable=attr["nullable"] == "YES",
                 autoincrement=bool(re.search(r"auto_increment", attr["Extra"], flags=re.I)),
                 numeric=any(TYPE_PATTERN[t].match(attr["type"]) for t in ("DECIMAL", "INTEGER", "FLOAT")),