Removed old debugging code

static/js/app.mjs

@@ -10,7 +10,6 @@ export class App {
 		this.crumbs = new N2Crumbs()
 		this.crumbsElement = document.getElementById('crumbs')
 		this.nodeUI = document.getElementById('note')
-		this.showNodeEventSequence = new ShowNodeEventSequence() // discard all GO_TO_NODE events
 
 		this.sidebar.render().then(sidebar => {
 			document.getElementById('tree').append(sidebar)
@@ -198,7 +197,7 @@ export class App {
 		await this.sidebar.makeVisible(node, ancestors, dontExpand)
 
 		_mbus.dispatch('CRUMBS_SET', ancestors, () => this.crumbsElement.replaceChildren(this.crumbs.render()))
-		_mbus.dispatch('NODE_UI_OPEN', { node, eventSequence: this.showNodeEventSequence.next() })
+		_mbus.dispatch('NODE_UI_OPEN', node)
 		_mbus.dispatch('TREE_EXPANSION', { expand: false, when: 'narrow' })
 		_mbus.dispatch('NODE_UNMODIFIED')
 	}//}}}
@@ -208,18 +207,6 @@ export class App {
 	}// }}}
 }
 
-class ShowNodeEventSequence {
-	constructor() {
-		this.seq = 0
-	}
-	next() {
-		return ++this.seq
-	}
-	current() {
-		return this.seq
-	}
-}
-
 class N2Crumbs extends CustomHTMLElement {
 	static {// {{{
 		this.tmpl = document.createElement('template')