feat(link_codes): linking method between telegram and website

alembic/versions/6d1bae3dc723_link_codes.py

@@ -0,0 +1,44 @@
+"""+link_codes
+
+Revision ID: 6d1bae3dc723
+Revises: 551c0ad261cd
+Create Date: 2026-08-18 20:19:35.961227
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '6d1bae3dc723'
+down_revision: Union[str, Sequence[str], None] = '551c0ad261cd'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('link_codes',
+    sa.Column('code', sa.TEXT(), nullable=False),
+    sa.Column('user_id', sa.INTEGER(), nullable=False),
+    sa.Column('status', sa.Enum('ACTIVE', 'USED', 'EXPIRED', name='linkcodestatus'), nullable=False),
+    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('expires_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('used_at', sa.DateTime(timezone=True), nullable=True),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('code'),
+    sa.UniqueConstraint('code')
+    )
+    op.create_unique_constraint(None, 'service_signatures', ['kid'])
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'service_signatures', type_='unique')
+    op.drop_table('link_codes')
+    # ### end Alembic commands ###