docs(warehouse-native): add mode architecture diagrams

docs/web-console-docs/warehouse-native/get-started.mdx

@@ -27,7 +27,7 @@ Getting started takes three steps:
 To begin, navigate to **Settings → Data Sources** and click **Add data source**.
 
 :::note The default data source
-Every installation ships with a built-in **default** data source — ABsmartly's managed ClickHouse. In [Hybrid mode](./modes#hybrid-warehouse-native) you keep this default and add external data sources for your goals. In [Fully mode](./modes#fully-warehouse-native) your own warehouse becomes the default. Exposure events always come from the default data source, so which one is the default determines your mode.
+Every installation ships with a built-in **default** data source, managed by ABsmartly. In [Hybrid mode](./modes#hybrid-warehouse-native) you keep this default and add external data sources for your goals. In [Fully mode](./modes#fully-warehouse-native) your own warehouse becomes the default. Exposure events always come from the default data source, so which one is the default determines your mode.
 :::
 
 You'll see a form with two sections: general information about the data source, and the connection credentials specific to your warehouse type.
@@ -183,15 +183,15 @@ ABsmartly will show a preview of the computed schedule in both UTC and your loca
 Match the frequency to your actual ETL schedule. If your data lands once a day at 8 AM UTC, use **Daily at specific time** with a 480-minute offset. Querying more often than data arrives just adds unnecessary load to your warehouse.
 :::
 
-Save the data source. If this is your **default** data source (a [Fully Warehouse Native](./modes#fully-warehouse-native) setup, or the standard managed ClickHouse), you're done — ABsmartly will start querying your warehouse on the configured schedule and your experiment data will flow through automatically. If you're connecting an **external** data source for [Hybrid mode](./modes#hybrid-warehouse-native), continue to Step 4.
+Save the data source. If you're setting up [Fully Warehouse Native](./modes#fully-warehouse-native) and this warehouse is your **default** data source, you're done — ABsmartly will start querying your warehouse on the configured schedule and your experiment data will flow through automatically. The built-in ABsmartly-managed default data source needs no such configuration, since it isn't a warehouse of yours. If you're connecting an **external** data source for [Hybrid mode](./modes#hybrid-warehouse-native), continue to Step 4.
 
 ---
 
 ## Step 4: Configure exposures import _(Hybrid only)_
 
 This step only applies to **external** (non-default) data sources — the setup used in [Hybrid Warehouse Native](./modes#hybrid-warehouse-native). If your warehouse is the default data source, you can skip it.
 
-In Hybrid mode, a goal can live in an external warehouse, but exposures come from the default data source (ABsmartly's managed ClickHouse). To compute metrics for such a goal, ABsmartly needs to make those exposures available to your external warehouse. It does this through an object store that you provide — you point ABsmartly at a storage location it can use, and your warehouse reads the exposures from there.
+In Hybrid mode, a goal can live in an external warehouse, but exposures come from the default data source (managed by ABsmartly). To compute metrics for such a goal, ABsmartly needs to make those exposures available to your external warehouse. It does this through an object store that you provide — you point ABsmartly at a storage location it can use, and your warehouse reads the exposures from there.
 
 The **Exposures import** section configures that storage location: