Revert "KI-AGENT: Exportiere Sachkonten beim Mandantenumzug"

This reverts commit 30aaf141c7.

backend/src/utils/tenantFullExport.ts

@@ -123,7 +123,6 @@ export const buildTenantFullExport = async (server: FastifyInstance, tenantId: n
         if (!tenantRows.length) throw new Error("Tenant nicht gefunden")
 
         addRows(tables, "tenants", tenantRows)
-        addRows(tables, "accounts", await loadRows(client, "accounts", `${quoteIdent("accountChart")} = $1`, [tenantRows[0].accountChart || "skr03"]))
 
         for (const [table, metadata] of columnsByTable.entries()) {
             if (table === "tenants") continue
@@ -287,15 +286,8 @@ const insertRows = async (client: any, table: string, rows: Record<string, any>[
         const placeholders = rowColumns.map((_, index) => `$${index + 1}`).join(", ")
         const values = rowColumns.map((column) => prepareColumnValue(row[column], metadata.jsonColumns.has(column)))
 
-        const conflictSql = table === "tenants" && rowColumns.includes("id")
-            ? `on conflict (${quoteIdent("id")}) do update set ${rowColumns
-                .filter((column) => column !== "id")
-                .map((column) => `${quoteIdent(column)} = excluded.${quoteIdent(column)}`)
-                .join(", ")}`
-            : "on conflict do nothing"
-
         await client.query(
-            `insert into ${quoteIdent(table)} (${rowColumns.map(quoteIdent).join(", ")}) values (${placeholders}) ${conflictSql}`,
+            `insert into ${quoteIdent(table)} (${rowColumns.map(quoteIdent).join(", ")}) values (${placeholders}) on conflict do nothing`,
             values
         )
         inserted += 1
@@ -336,7 +328,6 @@ export const importTenantFullExport = async (
     const client = await pool.connect()
     const importOrder = [
         "tenants",
-        "accounts",
         "auth_users",
         "auth_roles",
         "auth_role_permissions",