Adding onIntervention, browserIntervention

Author: Marcin Komorski

dev-docs/bidder-adaptor.md

@@ -737,6 +737,22 @@ Sample data received by this function:
 }
 ```
 
+### Registering on Intervention
+
+The onIntervention function will be called when the browser reports an intervention affecting a rendered creative (e.g., Chrome Heavy Ad Intervention or similar reporting APIs).
+
+#### Signature
+
+```javascript
+function onIntervention({ bid, intervention }) { ... }
+```
+
+#### Parameters
+
+1. `bid` — the winning bid object for which the intervention was detected (same shape as in other render callbacks like `onAdRenderSucceeded`).
+2. `intervention` — a browser-provided object describing the intervention. In Chromium-based browsers this typically originates from the [ReportingObserver] API with type: 'intervention' and includes a body describing the intervention details.
+
+
 ### Adding adapter aliases
 
 Use aliases if you want to reuse your adapter using other name for your partner/client, or just a shortcut name.

dev-docs/publisher-api-reference/getEvents.md

@@ -47,6 +47,7 @@ The available events are:
 | bidderError    | A bidder responded with an error | Object with the XMLHttpRequest error and the bid request object `{ error, bidderRequest }` |
 | tcf2Enforcement | There was a TCF2 enforcement action taken | `{ storageBlocked: ['moduleA', 'moduleB'], biddersBlocked: ['moduleB'], analyticsBlocked: ['moduleC'] }` |
 | bidAccepted | A bid was accepted and is about to be added to auction | Bid response object |
+| browserIntervention | The browser reported an intervention affecting a rendered creative (e.g., heavy-ad unload). | `{ bid, adId, intervention }` |
 
 The example below shows how these events can be used.