make watchlist fully manual; add price + day-change, two-block overview

Per design decision: the watchlist is now purely user-curated (no auto-seeding
of the top-10), so the auto_populate/dismissed machinery is removed and removals
are plain deletes. Each entry is enriched with latest close + day-over-day move.

Overview now shows two clear blocks: Top Setups (what to trade) and My Watchlist
(my names with current price and today's %). Market watchlist table drops the
now-meaningless auto/manual Type column in favour of Price and Day columns.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/components/watchlist/WatchlistTable.tsx

@@ -1,7 +1,6 @@
 import { Link } from 'react-router-dom';
 import type { WatchlistEntry } from '../../lib/types';
 import { formatPrice } from '../../lib/format';
-import { Badge } from '../ui/Badge';
 import { useRemoveFromWatchlist } from '../../hooks/useWatchlist';
 
 function scoreColor(score: number): string {
@@ -10,6 +9,12 @@ function scoreColor(score: number): string {
   return 'text-red-400';
 }
 
+function changeColor(value: number): string {
+  if (value > 0) return 'text-emerald-400';
+  if (value < 0) return 'text-red-400';
+  return 'text-gray-300';
+}
+
 interface WatchlistTableProps {
   entries: WatchlistEntry[];
 }
@@ -31,7 +36,8 @@ export function WatchlistTable({ entries }: WatchlistTableProps) {
         <thead>
           <tr className="border-b border-white/[0.06] text-xs uppercase tracking-wider text-gray-500">
             <th className="px-4 py-3">Symbol</th>
-            <th className="px-4 py-3">Type</th>
+            <th className="px-4 py-3">Price</th>
+            <th className="px-4 py-3">Day</th>
             <th className="px-4 py-3">Score</th>
             <th className="px-4 py-3">Dimensions</th>
             <th className="px-4 py-3">R:R</th>
@@ -54,8 +60,17 @@ export function WatchlistTable({ entries }: WatchlistTableProps) {
                   {entry.symbol}
                 </Link>
               </td>
-              <td className="px-4 py-3.5">
-                <Badge label={entry.entry_type} variant={entry.entry_type === 'auto' ? 'auto' : 'manual'} />
+              <td className="px-4 py-3.5 num text-gray-200">
+                {entry.last_close !== null ? formatPrice(entry.last_close) : <span className="text-gray-500">—</span>}
+              </td>
+              <td className="px-4 py-3.5 num">
+                {entry.change_pct !== null ? (
+                  <span className={changeColor(entry.change_pct)}>
+                    {entry.change_pct >= 0 ? '+' : ''}{entry.change_pct.toFixed(2)}%
+                  </span>
+                ) : (
+                  <span className="text-gray-500">—</span>
+                )}
               </td>
               <td className="px-4 py-3.5">
                 {entry.composite_score !== null ? (