From 9b5a510d02de205435461c750408df1e5c328eb7 Mon Sep 17 00:00:00 2001
From: Edward Betts <edward@4angle.com>
Date: Fri, 27 Feb 2026 19:21:31 +0000
Subject: [PATCH] Handle browser back/forward for in-page route navigation

Listen for popstate events and reload the relation from the URL path,
so the back button correctly returns to the route_master view after
navigating to an individual route.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 web/static/app.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/web/static/app.js b/web/static/app.js
index a471acf..a95604d 100644
--- a/web/static/app.js
+++ b/web/static/app.js
@@ -481,6 +481,11 @@ async function loadRouteMaster(relationId) {
 
 // ── Init ───────────────────────────────────────────────────────────────────
 
+window.addEventListener('popstate', () => {
+  const match = location.pathname.match(/^\/(\d+)$/);
+  if (match) loadRoute(parseInt(match[1], 10));
+});
+
 if (RELATION_ID) {
   loadRoute(RELATION_ID);
 }