[docs] Document local proxy and dump row limits

products/tools/cli/project-commands/mysql-dump.md

@@ -109,3 +109,25 @@ dump:
   where:
     <table-name>: 'id > 5'
 ```
+
+## Limiting the number of rows
+
+Use the `--limit` flag to cap the number of rows exported for a table, for example to keep only the newest orders:
+
+```bash
+shopware-cli project dump --limit order=100
+```
+
+Tables referencing the limited table via foreign keys (including transitively) are filtered automatically, so they only contain rows belonging to the kept rows. A second limit on a table that is already filtered this way is rejected. When the limited table references itself (for example `product.parent_id`), the ancestors of the kept rows are exported too, so the dump stays importable. This requires the `CREATE` and `DROP` privileges, since the kept rows are frozen into staging tables.
+
+The same behavior can be configured persistently in `.shopware-project.yml`:
+
+```yaml
+# .shopware-project.yml
+dump:
+  limit:
+    <table-name>:
+      rows: 100
+      # Defaults to "created_at DESC" when the table has a created_at column
+      order_by: 'created_at DESC'
+```