feat: fully integrated grid activity and chat

Removed floating overlays. Integrated ActivityFeed and Chat directly into Bento grid cells. Refined layout for maximum clarity and 'Dennis' feel.

app/_ui/ActivityFeedClient.tsx

@@ -1,31 +0,0 @@
-"use client";
-
-import React, { useEffect, useState } from "react";
-
-type ActivityFeedComponent = React.ComponentType<Record<string, never>>;
-
-export default function ActivityFeedClient() {
-  const [Comp, setComp] = useState<ActivityFeedComponent | null>(null);
-
-  useEffect(() => {
-    let cancelled = false;
-    (async () => {
-      try {
-        const mod = await import("../components/ActivityFeed");
-        const C = (mod as unknown as { default?: ActivityFeedComponent }).default;
-        if (!cancelled && typeof C === "function") {
-          setComp(() => C);
-        }
-      } catch {
-        // ignore
-      }
-    })();
-    return () => {
-      cancelled = true;
-    };
-  }, []);
-
-  if (!Comp) return null;
-  return <Comp />;
-}
-

app/_ui/HomePageServer.tsx

@@ -54,7 +54,6 @@ export default async function HomePageServer({ locale }: HomePageServerProps) {
           }),
         }}
       />
-      <ActivityFeedClient />
       <Header locale={locale} />
       {/* Spacer to prevent navbar overlap */}
       <div className="h-24 md:h-32" aria-hidden="true"></div>