refactor(migration): ensure 'triggerJobCompleted' column is added only if it does not exist

- Updated the SQL migration to include the 'IF NOT EXISTS' clause when adding the 'triggerJobCompleted' column to the Onboarding table.
- This change prevents errors during migration if the column already exists, enhancing the robustness of the migration process.

Author: claudfuen

packages/db/prisma/migrations/20250627180828_rename_completed_col/migration.sql

@@ -6,7 +6,7 @@
 */
 -- AlterTable
 ALTER TABLE "Onboarding"
-ADD COLUMN "triggerJobCompleted" BOOLEAN NOT NULL DEFAULT false;
+ADD COLUMN IF NOT EXISTS "triggerJobCompleted" BOOLEAN NOT NULL DEFAULT false;
 
 -- Copy existing values from completed to triggerJobCompleted
 UPDATE "Onboarding" SET "triggerJobCompleted" = "completed";