v3: lots of small UI tweaks and fixes

src/pages/Index.tsx

@@ -9,7 +9,6 @@ import {
 import { useLocation } from "react-router";
 
 import { AppHeader } from "../components/AppHeader.tsx";
-import { SearchBar } from "../components/SearchBar.tsx";
 import { PresenceRow } from "../components/PresenceRow.tsx";
 import { FeedTabBar } from "../components/FeedTabBar.tsx";
 import { type FeedTab, VALID_TABS } from "../config/feedTabs.ts";
@@ -249,7 +248,6 @@ export function Index() {
           <div className="header-center-slot">
             <PresenceRow />
             <FeedTabBar />
-            <SearchBar collapsible />
           </div>
         }
         disableNew={dumpsState.status === "error"}