fix: remove Poll Now button from dashboard

Admin-only actions belong in the admin panel, not the dashboard.
Cleaned up dead imports and "Run a poll to populate" copy.

Authored-By: Jack Levy
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/app/page.tsx

@@ -1,44 +1,23 @@
 "use client";
 
-import { TrendingUp, BookOpen, Flame, RefreshCw } from "lucide-react";
+import { TrendingUp, BookOpen, Flame } from "lucide-react";
 import Link from "next/link";
 import { useDashboard } from "@/lib/hooks/useDashboard";
 import { BillCard } from "@/components/shared/BillCard";
 import { WelcomeBanner } from "@/components/shared/WelcomeBanner";
-import { adminAPI } from "@/lib/api";
-import { useState } from "react";
 import { useAuthStore } from "@/stores/authStore";
 
 export default function DashboardPage() {
-  const { data, isLoading, refetch } = useDashboard();
-  const [polling, setPolling] = useState(false);
+  const { data, isLoading } = useDashboard();
   const token = useAuthStore((s) => s.token);
 
-  const triggerPoll = async () => {
-    setPolling(true);
-    try {
-      await adminAPI.triggerPoll();
-      setTimeout(() => { refetch(); setPolling(false); }, 3000);
-    } catch { setPolling(false); }
-  };
-
   return (
     <div className="space-y-8">
-      <div className="flex items-center justify-between">
-        <div>
-          <h1 className="text-2xl font-bold">Dashboard</h1>
-          <p className="text-muted-foreground text-sm mt-1">
-            Your personalized Congressional activity feed
-          </p>
-        </div>
-        <button
-          onClick={triggerPoll}
-          disabled={polling}
-          className="flex items-center gap-2 px-4 py-2 text-sm bg-primary text-primary-foreground rounded-md hover:bg-primary/90 transition-colors disabled:opacity-50"
-        >
-          <RefreshCw className={`w-4 h-4 ${polling ? "animate-spin" : ""}`} />
-          {polling ? "Polling..." : "Poll Now"}
-        </button>
+      <div>
+        <h1 className="text-2xl font-bold">Dashboard</h1>
+        <p className="text-muted-foreground text-sm mt-1">
+          Your personalized Congressional activity feed
+        </p>
       </div>
 
       <WelcomeBanner />
@@ -101,7 +80,7 @@ export default function DashboardPage() {
             </h2>
             {!data?.trending?.length ? (
               <div className="bg-card border border-border rounded-lg p-6 text-center text-muted-foreground text-xs">
-                No trend data yet. Run a poll to populate.
+                No trend data yet.
               </div>
             ) : (
               <div className="space-y-2">