feat: Initialize core application structure with item tracking, price history, and notification channel management.

app/alembic/versions/add_notification_channels.py

@@ -0,0 +1,44 @@
+"""add notification channels
+
+Revision ID: add_notification_channels
+Revises: merge_heads
+Create Date: 2025-11-23
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'add_notification_channels'
+down_revision = 'merge_heads'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # Create notification_channels table
+    op.create_table('notification_channels',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('name', sa.String(), nullable=False),
+        sa.Column('type', sa.String(), nullable=False),
+        sa.Column('configuration', sa.Text(), nullable=False),
+        sa.Column('is_active', sa.Boolean(), nullable=True),
+        sa.Column('created_at', sa.DateTime(), nullable=True),
+        sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_notification_channels_id'), 'notification_channels', ['id'], unique=False)
+
+    # Add notification_channel_id to items table
+    op.add_column('items', sa.Column('notification_channel_id', sa.Integer(), nullable=True))
+    op.create_foreign_key(None, 'items', 'notification_channels', ['notification_channel_id'], ['id'])
+
+
+def downgrade() -> None:
+    # Remove foreign key and column from items table
+    op.drop_constraint(None, 'items', type_='foreignkey')
+    op.drop_column('items', 'notification_channel_id')
+
+    # Drop notification_channels table
+    op.drop_index(op.f('ix_notification_channels_id'), table_name='notification_channels')
+    op.drop_table('notification_channels')