fix: type-safe scrollIntoViewIfNeeded

Add proper interface for WebKit extension method.

Changes:
- Add ScrollableElement interface
- Use typeof check instead of 'as any' cast

packages/core/src/PageAgentCore.ts

@@ -511,7 +511,8 @@ export class PageAgentCore extends EventTarget {
 		// Accumulated wait time warning
 		if (this.#states.totalWaitTime >= 3) {
 			this.pushObservation(
-				`You have waited ${this.#states.totalWaitTime} seconds accumulatively. DO NOT wait any longer unless you have a good reason.`
+				`You have waited ${this.#states.totalWaitTime} seconds accumulatively. ` +
+					`DO NOT wait any longer unless you have a good reason.`
 			)
 		}
 
@@ -527,7 +528,8 @@ export class PageAgentCore extends EventTarget {
 		const remaining = this.config.maxSteps - step
 		if (remaining === 5) {
 			this.pushObservation(
-				`⚠️ Only ${remaining} steps remaining. Consider wrapping up or calling done with partial results.`
+				`⚠️ Only ${remaining} steps remaining. ` +
+					`Consider wrapping up or calling done with partial results.`
 			)
 		} else if (remaining === 2) {
 			this.pushObservation(

packages/page-controller/src/actions.ts

@@ -213,14 +213,18 @@ export async function selectOptionElement(selectElement: HTMLSelectElement, opti
 	await waitFor(0.1) // Wait to ensure change event processing completes
 }
 
+interface ScrollableElement extends HTMLElement {
+	scrollIntoViewIfNeeded?: (centerIfNeeded?: boolean) => void
+}
+
 export async function scrollIntoViewIfNeeded(element: HTMLElement) {
-	const el = element as any
-	if (el.scrollIntoViewIfNeeded) {
+	const el = element as ScrollableElement
+	if (typeof el.scrollIntoViewIfNeeded === 'function') {
 		el.scrollIntoViewIfNeeded()
 		// await waitFor(0.5) // Animation playback
 	} else {
 		// @todo visibility check
-		el.scrollIntoView({ behavior: 'auto', block: 'center', inline: 'nearest' })
+		element.scrollIntoView({ behavior: 'auto', block: 'center', inline: 'nearest' })
 		// await waitFor(0.5) // Animation playback
 	}
 }