Add outlook v2 model contract

docs/consumers/pkg-model.md

@@ -38,6 +38,7 @@ Related child types include:
 - `WeatherAlert`
 - `WeatherAlertReference`
 - `WeatherOutlook`
+- `WeatherOutlookDiscussion`
 - `WMOCode`
 
 ## Wire And Compatibility Rules

docs/consumers/pkg-standards.md

@@ -43,6 +43,12 @@ Canonical schemas emitted after normalization:
 | `SchemaWeatherAlertV1` | `weather.alert.v1` |
 | `SchemaWeatherOutlookV1` | `weather.outlook.v1` |
 
+Additional canonical schema constant:
+
+| Constant | Value |
+|---|---|
+| `SchemaWeatherOutlookV2` | `weather.outlook.v2` |
+
 ## Raw Schema Constants
 
 Raw source schemas emitted by current registered sources: