docs(va): filter shot with rows to see, and no wrapperless crop

Captured from the report viewer at 1920x1100: two prompts (a value list and a
date), 21 rows returned by
FILTER : ( ( SOME_DROPDOWN = 'Option 1' AND SOME_DATE = '01JUL1960'd ) ).

- drops the header/FILTER crop, which had no VA chrome, and the sentence it
  illustrated
- drops the "single row it matches" wording, which no longer describes the
  picture
- documents the date clause as a code block instead of a second image

docs/visual-analytics.md

@@ -50,9 +50,9 @@ VA pushes a JSON payload to the iframe via `window.postMessage` whenever the sel
 
 If VA sends an empty / unmatched message the editor falls back to the unfiltered view but stays in VA mode.
 
-The applied filter is shown above the grid, so what the report did to the editor is visible without touching it.  In the report below, three report parameters - `SOME_CHAR`, `SOME_DROPDOWN` and `SOME_NUM` - reach one Data Controller object, and the editor shows both the combined filter and the single row it matches:
+In the report below, two report parameters - `SOME_DROPDOWN` and `SOME_DATE` - reach one Data Controller object, and the editor shows both the combined filter and the rows it matches:
 
-![Three report parameters driving the embedded editor](img/va-report-filters.png)
+![A value and a date parameter filtering the embedded editor](img/va-report-filters.png)
 
 More logic available in [`va-messaging.service.ts`](https://git.datacontroller.io/dc/dc/src/branch/main/client/src/app/services/va-messaging.service.ts).
 
@@ -184,6 +184,12 @@ The mapping lives entirely in the URL of the report object, so the job is to get
     FILTER : ( ( REGION = 'Europe' ) )
     ```
 
+    A date parameter arrives as a display date and is rendered as a SAS date literal, the same as a date filter built inside Data Controller:
+
+    ```text
+    FILTER : ( ( SOME_DROPDOWN = 'Option 1' AND SOME_DATE BETWEEN '01JAN1960'd AND '31MAR1960'd ) )
+    ```
+
     Something wrong shows the banner instead, with the cause and the fix - see [When a mapping cannot be used](#when-a-mapping-cannot-be-used) above.
 
 !!! note