fix(frontend): a filter written to the url survives another url write, the chat picked with alt and arrows stays in view

frontend/src/lib/components/ChatList.svelte

@@ -83,6 +83,11 @@
       if (index === -1 || viewport === null) {
         return;
       }
+      const row = viewport.querySelector<HTMLElement>(".Chat.selected");
+      if (row) {
+        row.scrollIntoView({ block: "nearest" });
+        return;
+      }
       const top = index * rowHeight;
       if (top < viewport.scrollTop) {
         viewport.scrollTop = top;

frontend/src/lib/params.ts

@@ -1,17 +1,32 @@
 import { goto } from "$app/navigation";
 import { page } from "$app/state";
 
-export async function replaceParam(
-  key: string,
-  value: string | null
-): Promise<void> {
+const ATTEMPTS = 2;
+
+function withParam(key: string, value: string | null): URL {
   const url = new URL(page.url.href);
   if (value === null) {
     url.searchParams.delete(key);
   } else {
     url.searchParams.set(key, value);
   }
-  if (url.href !== page.url.href) {
-    await goto(url, { replace: true, reset: false, state: { ...page.state } });
+  return url;
+}
+
+export async function replaceParam(
+  key: string,
+  value: string | null
+): Promise<void> {
+  for (let attempt = 0; attempt < ATTEMPTS; attempt += 1) {
+    const url = withParam(key, value);
+    if (url.href === page.url.href) {
+      return;
+    }
+    // biome-ignore lint/performance/noAwaitInLoops: a write overtaken by another navigation is retried once
+    await goto(url, {
+      replace: true,
+      reset: false,
+      state: { ...page.state },
+    }).catch(() => undefined);
   }
 }