feat: Browser profile testing & login-free workflow support — backend (#SKY-8012) (#4818)

Co-authored-by: Shuchang Zheng <wintonzheng0325@gmail.com>

alembic/versions/2026_02_19_2317-dc37d888db44_browser_profile_testing_login_free_.py

@@ -0,0 +1,33 @@
+"""Browser profile testing & login-free workflow support
+
+Revision ID: dc37d888db44
+Revises: a1b2c3d4e5f6
+Create Date: 2026-02-19 23:17:34.500314+00:00
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "dc37d888db44"
+down_revision: Union[str, None] = "a1b2c3d4e5f6"
+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.add_column("credentials", sa.Column("browser_profile_id", sa.String(), nullable=True))
+    op.add_column("credentials", sa.Column("tested_url", sa.String(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column("credentials", "tested_url")
+    op.drop_column("credentials", "browser_profile_id")
+    # ### end Alembic commands ###