Merge pull request #1069 from CREDO23/fix/zero-cache

[Fix] Make migration 109 idempotent

surfsense_backend/alembic/versions/109_add_folders_table.py

@@ -11,6 +11,7 @@ index to correctly handle NULL parent_id at root level.
 from collections.abc import Sequence
 
 import sqlalchemy as sa
+from sqlalchemy import inspect
 
 from alembic import op
 
@@ -21,6 +22,11 @@ depends_on: str | Sequence[str] | None = None
 
 
 def upgrade() -> None:
+    conn = op.get_bind()
+    inspector = inspect(conn)
+    existing_tables = inspector.get_table_names()
+
+    if "folders" not in existing_tables:
         op.create_table(
             "folders",
             sa.Column("id", sa.Integer(), primary_key=True, index=True),
@@ -65,6 +71,8 @@ def upgrade() -> None:
     # PostgreSQL treats NULL != NULL in regular unique constraints, so a standard
     # UniqueConstraint(search_space_id, parent_id, name) would allow duplicate
     # folder names at the root level.
+    existing_indexes = [idx["name"] for idx in inspector.get_indexes("folders")]
+    if "uq_folder_space_parent_name" not in existing_indexes:
         op.execute(
             """
             CREATE UNIQUE INDEX uq_folder_space_parent_name
@@ -72,6 +80,8 @@ def upgrade() -> None:
             """
         )
 
+    existing_columns = [col["name"] for col in inspector.get_columns("documents")]
+    if "folder_id" not in existing_columns:
         op.add_column(
             "documents",
             sa.Column(