feat: advanced RW sync system

alembic/versions/426b372286c3_add_rw_sync_outbox.py

@@ -0,0 +1,46 @@
+"""add rw sync outbox
+
+Revision ID: 426b372286c3
+Revises: af1c3d7e4b20
+Create Date: 2026-08-20 21:31:20.949847
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '426b372286c3'
+down_revision: Union[str, Sequence[str], None] = 'af1c3d7e4b20'
+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('rw_sync_outbox',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('subscription_id', sa.INTEGER(), nullable=False),
+    sa.Column('revision', sa.INTEGER(), nullable=False),
+    sa.Column('attempts', sa.INTEGER(), nullable=False),
+    sa.Column('next_attempt_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('locked_until', sa.DateTime(timezone=True), nullable=True),
+    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
+    sa.ForeignKeyConstraint(['subscription_id'], ['subscriptions.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('subscription_id')
+    )
+    op.create_unique_constraint(None, 'service_notifications', ['id'])
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'service_notifications', type_='unique')
+    op.drop_table('rw_sync_outbox')
+    # ### end Alembic commands ###