migrations/versions/47a76cd261fd_scripts_unique_index_include_deleted_at.py

@@ -0,0 +1,54 @@
+"""Make the scripts workspace/name/type unique index soft-delete aware.
+
+The old unique index ``uk_scripts_workspace_name`` on
+``(workspace_id, script_name, script_type)`` blocked re-uploading a
+script after it had been soft-deleted, because the deleted row was still
+part of the index.
+
+Replace it with ``uk_scripts_workspace_name_active`` on
+``(workspace_id, script_name, script_type, deleted_at)``.  In MySQL a
+unique index treats ``NULL`` values as distinct, so a new active row
+(``deleted_at IS NULL``) no longer conflicts with a previously deleted
+row (``deleted_at IS NOT NULL``), while two active rows with the same
+name still conflict as expected.
+
+Revision ID: 47a76cd261fd
+Revises: 3ba4d8489f36
+Create Date: 2026-08-14
+"""
+
+from collections.abc import Sequence
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "47a76cd261fd"
+down_revision: str | Sequence[str] | None = "3ba4d8489f36"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.drop_index(
+        "uk_scripts_workspace_name",
+        table_name="scripts",
+    )
+    op.create_index(
+        "uk_scripts_workspace_name_active",
+        "scripts",
+        ["workspace_id", "script_name", "script_type", "deleted_at"],
+        unique=True,
+    )
+
+
+def downgrade() -> None:
+    op.drop_index(
+        "uk_scripts_workspace_name_active",
+        table_name="scripts",
+    )
+    op.create_index(
+        "uk_scripts_workspace_name",
+        "scripts",
+        ["workspace_id", "script_name", "script_type"],
+        unique=True,
+    )

migrations/versions/a1b2c3d4e5f6_drop_scripts_data_resources_unique_indexes.py

@@ -0,0 +1,63 @@
+"""Drop unique indexes on Scripts and DataResources.
+
+StorageObjects now carries the physical uniqueness guarantees:
+  - ``uk_storage_bucket_key``
+  - ``uk_storage_workspace_path``
+
+Scripts and DataResources therefore no longer need their own unique
+indexes on ``current_object_id`` / ``storage_object_id``, and the
+soft-delete-aware ``uk_scripts_workspace_name_active`` index is also
+removed.  Re-uploading a previously soft-deleted script or resource is
+allowed because the StorageObjects layer enforces path uniqueness only
+for active objects.
+
+Revision ID: a1b2c3d4e5f6
+Revises: 47a76cd261fd
+Create Date: 2026-08-14
+"""
+
+from collections.abc import Sequence
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "a1b2c3d4e5f6"
+down_revision: str | Sequence[str] | None = "47a76cd261fd"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.drop_index(
+        "uk_scripts_workspace_name_active",
+        table_name="scripts",
+    )
+    op.drop_index(
+        "uk_scripts_current_object",
+        table_name="scripts",
+    )
+    op.drop_index(
+        "uk_data_resources_object",
+        table_name="data_resources",
+    )
+
+
+def downgrade() -> None:
+    op.create_index(
+        "uk_scripts_workspace_name_active",
+        "scripts",
+        ["workspace_id", "script_name", "script_type", "deleted_at"],
+        unique=True,
+    )
+    op.create_index(
+        "uk_scripts_current_object",
+        "scripts",
+        ["current_object_id"],
+        unique=True,
+    )
+    op.create_index(
+        "uk_data_resources_object",
+        "data_resources",
+        ["storage_object_id"],
+        unique=True,
+    )