shu/introduce unique key to browser sessions (#4263)

alembic/versions/2025_12_10_2211-cf6ae2f5013c_make_browser_address_a_unique_key_in_.py

@@ -0,0 +1,31 @@
+"""make browser_address a unique key in persistent_browser_sessions table
+
+Revision ID: cf6ae2f5013c
+Revises: 174dcd456325
+Create Date: 2025-12-10 22:11:03.926337+00:00
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "cf6ae2f5013c"
+down_revision: Union[str, None] = "174dcd456325"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_unique_constraint(
+        "uc_persistent_browser_sessions_browser_address", "persistent_browser_sessions", ["browser_address"]
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint("uc_persistent_browser_sessions_browser_address", "persistent_browser_sessions", type_="unique")
+    # ### end Alembic commands ###