feat: consolidate shared UI and harden browser authority for release

alembic/dev_versions/c58a2d7e9f10_ownership_decision_history.py

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+"""Development-track wrapper for the ownership history repair."""
+
+from __future__ import annotations
+
+from importlib.util import module_from_spec, spec_from_file_location
+from pathlib import Path
+
+
+_path = Path(__file__).resolve().parents[1] / "versions" / "c58a2d7e9f10_ownership_decision_history.py"
+_spec = spec_from_file_location("govoplan_ownership_decision_history_migration", _path)
+if _spec is None or _spec.loader is None:
+    raise RuntimeError(f"Unable to load migration implementation from {_path}")
+_module = module_from_spec(_spec)
+_spec.loader.exec_module(_module)
+
+revision = _module.revision
+down_revision = _module.down_revision
+branch_labels = _module.branch_labels
+depends_on = _module.depends_on
+upgrade = _module.upgrade
+downgrade = _module.downgrade

alembic/versions/c58a2d7e9f10_ownership_decision_history.py

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+"""repair decision history on previously upgraded ownership tables
+
+Revision ID: c58a2d7e9f10
+Revises: b47e6f809a13
+Create Date: 2026-09-07
+"""
+
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "c58a2d7e9f10"
+down_revision = "b47e6f809a13"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # The original ownership migration gained this column after some databases
+    # had already applied it. create_all/checkfirst cannot upgrade those tables.
+    # Fresh installations already have it; never replace their audit evidence.
+    columns = {column["name"] for column in sa.inspect(op.get_bind()).get_columns(
+        "core_ownership_transfers"
+    )}
+    if "decisions" not in columns:
+        op.add_column(
+            "core_ownership_transfers",
+            sa.Column("decisions", sa.JSON(), nullable=False, server_default=sa.text("'[]'")),
+        )
+
+
+def downgrade() -> None:
+    # Older installations and fresh installations at the preceding revision
+    # differ. Keep the additive column and any subsequently recorded evidence.
+    pass