refactor: replace existing organization_role and audit_log tables with new definitions

- Deleted the old SQL files for organization_role and audit_log.
- Introduced new SQL file defining organization_role and audit_log with updated foreign key constraints and indexes.
- Updated metadata snapshots to reflect the new table structures and relationships.
- Adjusted access control permissions for backup and notification operations to include update capabilities.

packages/server/src/db/schema/audit-log.ts

@@ -11,11 +11,9 @@ export const auditLog = pgTable(
 			.primaryKey()
 			.$defaultFn(() => nanoid()),
 		organizationId: text("organization_id")
-			.notNull()
-			.references(() => organization.id, { onDelete: "cascade" }),
+			.references(() => organization.id, { onDelete: "set null" }),
 		userId: text("user_id")
-			.notNull()
-			.references(() => user.id, { onDelete: "cascade" }),
+			.references(() => user.id, { onDelete: "set null" }),
 		userEmail: text("user_email").notNull(),
 		userRole: text("user_role").notNull(),
 		action: text("action").notNull(),