diff --git a/venv/Lib/site-packages/sqlalchemy/ext/orderinglist.py b/venv/Lib/site-packages/sqlalchemy/ext/orderinglist.py
new file mode 100644
index 0000000..26b6ec0
--- /dev/null
+++ b/venv/Lib/site-packages/sqlalchemy/ext/orderinglist.py
@@ -0,0 +1,440 @@
+# ext/orderinglist.py
+# Copyright (C) 2005-2026 the SQLAlchemy authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: https://www.opensource.org/licenses/mit-license.php
+
+"""A custom list that manages index/position information for contained
+elements.
+
+:author: Jason Kirtland
+
+``orderinglist`` is a helper for mutable ordered relationships.  It will
+intercept list operations performed on a :func:`_orm.relationship`-managed
+collection and
+automatically synchronize changes in list position onto a target scalar
+attribute.
+
+Example: A ``slide`` table, where each row refers to zero or more entries
+in a related ``bullet`` table.   The bullets within a slide are
+displayed in order based on the value of the ``position`` column in the
+``bullet`` table.   As entries are reordered in memory, the value of the
+``position`` attribute should be updated to reflect the new sort order::
+
+
+    Base = declarative_base()
+
+
+    class Slide(Base):
+        __tablename__ = "slide"
+
+        id = Column(Integer, primary_key=True)
+        name = Column(String)
+
+        bullets = relationship("Bullet", order_by="Bullet.position")
+
+
+    class Bullet(Base):
+        __tablename__ = "bullet"
+        id = Column(Integer, primary_key=True)
+        slide_id = Column(Integer, ForeignKey("slide.id"))
+        position = Column(Integer)
+        text = Column(String)
+
+The standard relationship mapping will produce a list-like attribute on each
+``Slide`` containing all related ``Bullet`` objects,
+but coping with changes in ordering is not handled automatically.
+When appending a ``Bullet`` into ``Slide.bullets``, the ``Bullet.position``
+attribute will remain unset until manually assigned.   When the ``Bullet``
+is inserted into the middle of the list, the following ``Bullet`` objects
+will also need to be renumbered.
+
+The :class:`.OrderingList` object automates this task, managing the
+``position`` attribute on all ``Bullet`` objects in the collection.  It is
+constructed using the :func:`.ordering_list` factory::
+
+    from sqlalchemy.ext.orderinglist import ordering_list
+
+    Base = declarative_base()
+
+
+    class Slide(Base):
+        __tablename__ = "slide"
+
+        id = Column(Integer, primary_key=True)
+        name = Column(String)
+
+        bullets = relationship(
+            "Bullet",
+            order_by="Bullet.position",
+            collection_class=ordering_list("position"),
+        )
+
+
+    class Bullet(Base):
+        __tablename__ = "bullet"
+        id = Column(Integer, primary_key=True)
+        slide_id = Column(Integer, ForeignKey("slide.id"))
+        position = Column(Integer)
+        text = Column(String)
+
+With the above mapping the ``Bullet.position`` attribute is managed::
+
+    s = Slide()
+    s.bullets.append(Bullet())
+    s.bullets.append(Bullet())
+    s.bullets[1].position
+    >>> 1
+    s.bullets.insert(1, Bullet())
+    s.bullets[2].position
+    >>> 2
+
+The :class:`.OrderingList` construct only works with **changes** to a
+collection, and not the initial load from the database, and requires that the
+list be sorted when loaded.  Therefore, be sure to specify ``order_by`` on the
+:func:`_orm.relationship` against the target ordering attribute, so that the
+ordering is correct when first loaded.
+
+.. warning::
+
+  :class:`.OrderingList` only provides limited functionality when a primary
+  key column or unique column is the target of the sort.  Operations
+  that are unsupported or are problematic include:
+
+    * two entries must trade values.  This is not supported directly in the
+      case of a primary key or unique constraint because it means at least
+      one row would need to be temporarily removed first, or changed to
+      a third, neutral value while the switch occurs.
+
+    * an entry must be deleted in order to make room for a new entry.
+      SQLAlchemy's unit of work performs all INSERTs before DELETEs within a
+      single flush.  In the case of a primary key, it will trade
+      an INSERT/DELETE of the same primary key for an UPDATE statement in order
+      to lessen the impact of this limitation, however this does not take place
+      for a UNIQUE column.
+      A future feature will allow the "DELETE before INSERT" behavior to be
+      possible, alleviating this limitation, though this feature will require
+      explicit configuration at the mapper level for sets of columns that
+      are to be handled in this way.
+
+:func:`.ordering_list` takes the name of the related object's ordering
+attribute as an argument.  By default, the zero-based integer index of the
+object's position in the :func:`.ordering_list` is synchronized with the
+ordering attribute: index 0 will get position 0, index 1 position 1, etc.  To
+start numbering at 1 or some other integer, provide ``count_from=1``.
+
+
+"""
+
+from __future__ import annotations
+
+from typing import Any
+from typing import Callable
+from typing import Dict
+from typing import Iterable
+from typing import List
+from typing import Optional
+from typing import overload
+from typing import Sequence
+from typing import Type
+from typing import TypeVar
+from typing import Union
+
+from ..orm.collections import collection
+from ..orm.collections import collection_adapter
+from ..util.typing import SupportsIndex
+
+_T = TypeVar("_T")
+OrderingFunc = Callable[[int, Sequence[_T]], object]
+
+
+__all__ = ["ordering_list"]
+
+
+def ordering_list(
+    attr: str,
+    count_from: Optional[int] = None,
+    ordering_func: Optional[OrderingFunc[_T]] = None,
+    reorder_on_append: bool = False,
+) -> Callable[[], OrderingList[_T]]:
+    """Prepares an :class:`OrderingList` factory for use in mapper definitions.
+
+    Returns an object suitable for use as an argument to a Mapper
+    relationship's ``collection_class`` option.  e.g.::
+
+        from sqlalchemy.ext.orderinglist import ordering_list
+
+
+        class Slide(Base):
+            __tablename__ = "slide"
+
+            id = Column(Integer, primary_key=True)
+            name = Column(String)
+
+            bullets = relationship(
+                "Bullet",
+                order_by="Bullet.position",
+                collection_class=ordering_list("position"),
+            )
+
+    :param attr:
+      Name of the mapped attribute to use for storage and retrieval of
+      ordering information
+
+    :param count_from:
+      Set up an integer-based ordering, starting at ``count_from``.  For
+      example, ``ordering_list('pos', count_from=1)`` would create a 1-based
+      list in SQL, storing the value in the 'pos' column.  Ignored if
+      ``ordering_func`` is supplied.
+
+    Additional arguments are passed to the :class:`.OrderingList` constructor.
+
+    """
+
+    kw = _unsugar_count_from(
+        count_from=count_from,
+        ordering_func=ordering_func,
+        reorder_on_append=reorder_on_append,
+    )
+    return lambda: OrderingList(attr, **kw)
+
+
+# Ordering utility functions
+
+
+def count_from_0(index: int, collection: object) -> int:
+    """Numbering function: consecutive integers starting at 0."""
+
+    return index
+
+
+def count_from_1(index: int, collection: object) -> int:
+    """Numbering function: consecutive integers starting at 1."""
+
+    return index + 1
+
+
+def count_from_n_factory(start: int) -> OrderingFunc[Any]:
+    """Numbering function: consecutive integers starting at arbitrary start."""
+
+    def f(index: int, collection: object) -> int:
+        return index + start
+
+    try:
+        f.__name__ = "count_from_%i" % start
+    except TypeError:
+        pass
+    return f
+
+
+def _unsugar_count_from(**kw: Any) -> Dict[str, Any]:
+    """Builds counting functions from keyword arguments.
+
+    Keyword argument filter, prepares a simple ``ordering_func`` from a
+    ``count_from`` argument, otherwise passes ``ordering_func`` on unchanged.
+    """
+
+    count_from = kw.pop("count_from", None)
+    if kw.get("ordering_func", None) is None and count_from is not None:
+        if count_from == 0:
+            kw["ordering_func"] = count_from_0
+        elif count_from == 1:
+            kw["ordering_func"] = count_from_1
+        else:
+            kw["ordering_func"] = count_from_n_factory(count_from)
+    return kw
+
+
+class OrderingList(List[_T]):
+    """A custom list that manages position information for its children.
+
+    The :class:`.OrderingList` object is normally set up using the
+    :func:`.ordering_list` factory function, used in conjunction with
+    the :func:`_orm.relationship` function.
+
+    """
+
+    ordering_attr: str
+    ordering_func: OrderingFunc[_T]
+    reorder_on_append: bool
+
+    def __init__(
+        self,
+        ordering_attr: str,
+        ordering_func: Optional[OrderingFunc[_T]] = None,
+        reorder_on_append: bool = False,
+    ):
+        """A custom list that manages position information for its children.
+
+        ``OrderingList`` is a ``collection_class`` list implementation that
+        syncs position in a Python list with a position attribute on the
+        mapped objects.
+
+        This implementation relies on the list starting in the proper order,
+        so be **sure** to put an ``order_by`` on your relationship.
+
+        :param ordering_attr:
+          Name of the attribute that stores the object's order in the
+          relationship.
+
+        :param ordering_func: Optional.  A function that maps the position in
+          the Python list to a value to store in the
+          ``ordering_attr``.  Values returned are usually (but need not be!)
+          integers.
+
+          An ``ordering_func`` is called with two positional parameters: the
+          index of the element in the list, and the list itself.
+
+          If omitted, Python list indexes are used for the attribute values.
+          Two basic pre-built numbering functions are provided in this module:
+          ``count_from_0`` and ``count_from_1``.  For more exotic examples
+          like stepped numbering, alphabetical and Fibonacci numbering, see
+          the unit tests.
+
+        :param reorder_on_append:
+          Default False.  When appending an object with an existing (non-None)
+          ordering value, that value will be left untouched unless
+          ``reorder_on_append`` is true.  This is an optimization to avoid a
+          variety of dangerous unexpected database writes.
+
+          SQLAlchemy will add instances to the list via append() when your
+          object loads.  If for some reason the result set from the database
+          skips a step in the ordering (say, row '1' is missing but you get
+          '2', '3', and '4'), reorder_on_append=True would immediately
+          renumber the items to '1', '2', '3'.  If you have multiple sessions
+          making changes, any of whom happen to load this collection even in
+          passing, all of the sessions would try to "clean up" the numbering
+          in their commits, possibly causing all but one to fail with a
+          concurrent modification error.
+
+          Recommend leaving this with the default of False, and just call
+          ``reorder()`` if you're doing ``append()`` operations with
+          previously ordered instances or when doing some housekeeping after
+          manual sql operations.
+
+        """
+        self.ordering_attr = ordering_attr
+        if ordering_func is None:
+            ordering_func = count_from_0
+        self.ordering_func = ordering_func
+        self.reorder_on_append = reorder_on_append
+
+    # More complex serialization schemes (multi column, e.g.) are possible by
+    # subclassing and reimplementing these two methods.
+    def _get_order_value(self, entity: _T) -> Any:
+        return getattr(entity, self.ordering_attr)
+
+    def _set_order_value(self, entity: _T, value: Any) -> None:
+        setattr(entity, self.ordering_attr, value)
+
+    def reorder(self) -> None:
+        """Synchronize ordering for the entire collection.
+
+        Sweeps through the list and ensures that each object has accurate
+        ordering information set.
+
+        """
+        for index, entity in enumerate(self):
+            self._order_entity(index, entity, True)
+
+    # As of 0.5, _reorder is no longer semi-private
+    _reorder = reorder
+
+    def _order_entity(
+        self, index: int, entity: _T, reorder: bool = True
+    ) -> None:
+        have = self._get_order_value(entity)
+
+        # Don't disturb existing ordering if reorder is False
+        if have is not None and not reorder:
+            return
+
+        should_be = self.ordering_func(index, self)
+        if have != should_be:
+            self._set_order_value(entity, should_be)
+
+    def append(self, entity: _T) -> None:
+        super().append(entity)
+        self._order_entity(len(self) - 1, entity, self.reorder_on_append)
+
+    def _raw_append(self, entity: _T) -> None:
+        """Append without any ordering behavior."""
+
+        super().append(entity)
+
+    _raw_append = collection.adds(1)(_raw_append)
+
+    def insert(self, index: SupportsIndex, entity: _T) -> None:
+        super().insert(index, entity)
+        self._reorder()
+
+    def remove(self, entity: _T) -> None:
+        super().remove(entity)
+
+        adapter = collection_adapter(self)
+        if adapter and adapter._referenced_by_owner:
+            self._reorder()
+
+    def pop(self, index: SupportsIndex = -1) -> _T:
+        entity = super().pop(index)
+        self._reorder()
+        return entity
+
+    @overload
+    def __setitem__(self, index: SupportsIndex, entity: _T) -> None: ...
+
+    @overload
+    def __setitem__(self, index: slice, entity: Iterable[_T]) -> None: ...
+
+    def __setitem__(
+        self,
+        index: Union[SupportsIndex, slice],
+        entity: Union[_T, Iterable[_T]],
+    ) -> None:
+        if isinstance(index, slice):
+            step = index.step or 1
+            start = index.start or 0
+            if start < 0:
+                start += len(self)
+            stop = index.stop or len(self)
+            if stop < 0:
+                stop += len(self)
+            entities = list(entity)  # type: ignore[arg-type]
+            for i in range(start, stop, step):
+                self.__setitem__(i, entities[i])
+        else:
+            self._order_entity(int(index), entity, True)  # type: ignore[arg-type] # noqa: E501
+            super().__setitem__(index, entity)  # type: ignore[assignment]
+
+    def __delitem__(self, index: Union[SupportsIndex, slice]) -> None:
+        super().__delitem__(index)
+        self._reorder()
+
+    def __reduce__(self) -> Any:
+        return _reconstitute, (self.__class__, self.__dict__, list(self))
+
+    for func_name, func in list(locals().items()):
+        if (
+            callable(func)
+            and func.__name__ == func_name
+            and not func.__doc__
+            and hasattr(list, func_name)
+        ):
+            func.__doc__ = getattr(list, func_name).__doc__
+    del func_name, func
+
+
+def _reconstitute(
+    cls: Type[OrderingList[_T]], dict_: Dict[str, Any], items: List[_T]
+) -> OrderingList[_T]:
+    """Reconstitute an :class:`.OrderingList`.
+
+    This is the adjoint to :meth:`.OrderingList.__reduce__`.  It is used for
+    unpickling :class:`.OrderingList` objects.
+
+    """
+    obj = cls.__new__(cls)
+    obj.__dict__.update(dict_)
+    list.extend(obj, items)
+    return obj
diff --git a/venv/Lib/site-packages/sqlalchemy/ext/serializer.py b/venv/Lib/site-packages/sqlalchemy/ext/serializer.py
new file mode 100644
index 0000000..91a7ca6
--- /dev/null
+++ b/venv/Lib/site-packages/sqlalchemy/ext/serializer.py
@@ -0,0 +1,184 @@
+# ext/serializer.py
+# Copyright (C) 2005-2026 the SQLAlchemy authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: https://www.opensource.org/licenses/mit-license.php
+# mypy: ignore-errors
+
+"""Serializer/Deserializer objects for usage with SQLAlchemy query structures,
+allowing "contextual" deserialization.
+
+.. legacy::
+
+    The serializer extension is **legacy** and should not be used for
+    new development.
+
+Any SQLAlchemy query structure, either based on sqlalchemy.sql.*
+or sqlalchemy.orm.* can be used.  The mappers, Tables, Columns, Session
+etc. which are referenced by the structure are not persisted in serialized
+form, but are instead re-associated with the query structure
+when it is deserialized.
+
+.. warning:: The serializer extension uses pickle to serialize and
+   deserialize objects, so the same security consideration mentioned
+   in the `python documentation
+   <https://docs.python.org/3/library/pickle.html>`_ apply.
+
+Usage is nearly the same as that of the standard Python pickle module::
+
+    from sqlalchemy.ext.serializer import loads, dumps
+
+    metadata = MetaData(bind=some_engine)
+    Session = scoped_session(sessionmaker())
+
+    # ... define mappers
+
+    query = (
+        Session.query(MyClass)
+        .filter(MyClass.somedata == "foo")
+        .order_by(MyClass.sortkey)
+    )
+
+    # pickle the query
+    serialized = dumps(query)
+
+    # unpickle.  Pass in metadata + scoped_session
+    query2 = loads(serialized, metadata, Session)
+
+    print(query2.all())
+
+Similar restrictions as when using raw pickle apply; mapped classes must be
+themselves be pickleable, meaning they are importable from a module-level
+namespace.
+
+The serializer module is only appropriate for query structures.  It is not
+needed for:
+
+* instances of user-defined classes.   These contain no references to engines,
+  sessions or expression constructs in the typical case and can be serialized
+  directly.
+
+* Table metadata that is to be loaded entirely from the serialized structure
+  (i.e. is not already declared in the application).   Regular
+  pickle.loads()/dumps() can be used to fully dump any ``MetaData`` object,
+  typically one which was reflected from an existing database at some previous
+  point in time.  The serializer module is specifically for the opposite case,
+  where the Table metadata is already present in memory.
+
+"""
+
+from io import BytesIO
+import pickle
+import re
+
+from .. import Column
+from .. import Table
+from ..engine import Engine
+from ..orm import class_mapper
+from ..orm.interfaces import MapperProperty
+from ..orm.mapper import Mapper
+from ..orm.session import Session
+from ..util import b64decode
+from ..util import b64encode
+
+__all__ = ["Serializer", "Deserializer", "dumps", "loads"]
+
+
+class Serializer(pickle.Pickler):
+
+    def persistent_id(self, obj):
+        # print "serializing:", repr(obj)
+        if isinstance(obj, Mapper) and not obj.non_primary:
+            id_ = "mapper:" + b64encode(pickle.dumps(obj.class_))
+        elif isinstance(obj, MapperProperty) and not obj.parent.non_primary:
+            id_ = (
+                "mapperprop:"
+                + b64encode(pickle.dumps(obj.parent.class_))
+                + ":"
+                + obj.key
+            )
+        elif isinstance(obj, Table):
+            if "parententity" in obj._annotations:
+                id_ = "mapper_selectable:" + b64encode(
+                    pickle.dumps(obj._annotations["parententity"].class_)
+                )
+            else:
+                id_ = f"table:{obj.key}"
+        elif isinstance(obj, Column) and isinstance(obj.table, Table):
+            id_ = f"column:{obj.table.key}:{obj.key}"
+        elif isinstance(obj, Session):
+            id_ = "session:"
+        elif isinstance(obj, Engine):
+            id_ = "engine:"
+        else:
+            return None
+        return id_
+
+
+our_ids = re.compile(
+    r"(mapperprop|mapper|mapper_selectable|table|column|"
+    r"session|attribute|engine):(.*)"
+)
+
+
+class Deserializer(pickle.Unpickler):
+
+    def __init__(self, file, metadata=None, scoped_session=None, engine=None):
+        super().__init__(file)
+        self.metadata = metadata
+        self.scoped_session = scoped_session
+        self.engine = engine
+
+    def get_engine(self):
+        if self.engine:
+            return self.engine
+        elif self.scoped_session and self.scoped_session().bind:
+            return self.scoped_session().bind
+        else:
+            return None
+
+    def persistent_load(self, id_):
+        m = our_ids.match(str(id_))
+        if not m:
+            return None
+        else:
+            type_, args = m.group(1, 2)
+            if type_ == "attribute":
+                key, clsarg = args.split(":")
+                cls = pickle.loads(b64decode(clsarg))
+                return getattr(cls, key)
+            elif type_ == "mapper":
+                cls = pickle.loads(b64decode(args))
+                return class_mapper(cls)
+            elif type_ == "mapper_selectable":
+                cls = pickle.loads(b64decode(args))
+                return class_mapper(cls).__clause_element__()
+            elif type_ == "mapperprop":
+                mapper, keyname = args.split(":")
+                cls = pickle.loads(b64decode(mapper))
+                return class_mapper(cls).attrs[keyname]
+            elif type_ == "table":
+                return self.metadata.tables[args]
+            elif type_ == "column":
+                table, colname = args.split(":")
+                return self.metadata.tables[table].c[colname]
+            elif type_ == "session":
+                return self.scoped_session()
+            elif type_ == "engine":
+                return self.get_engine()
+            else:
+                raise Exception("Unknown token: %s" % type_)
+
+
+def dumps(obj, protocol=pickle.HIGHEST_PROTOCOL):
+    buf = BytesIO()
+    pickler = Serializer(buf, protocol)
+    pickler.dump(obj)
+    return buf.getvalue()
+
+
+def loads(data, metadata=None, scoped_session=None, engine=None):
+    buf = BytesIO(data)
+    unpickler = Deserializer(buf, metadata, scoped_session, engine)
+    return unpickler.load()