feat(macro-vibes): rename BTC Signal → Macro Vibes; add MacroPanel UI

Module rename across page H1, navbar tab, URL (/en/btc → /en/macro),
all metadata/JSON-LD, sitemap, llms.txt, opengraph image, and SystemControl
copy. Old /btc route fully removed.

New components/btc/MacroPanel.tsx polls /api/macro/snapshot and lays out
the 8 indicators in four sections (Valuation / Bottom trigger reference /
Market structure / Sentiment & flows / Positioning) with tone-coloured
values, current-band threshold chips, and a single CoinGlass / source
chart link per card. Composite -100..+100 needle pulses on score change.

Also fixes the pinned bottom-reversal alert on the homepage, which still
linked to the now-404 /en/btc — now routes to /en/macro.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/[locale]/DashboardClient.tsx

@@ -13,6 +13,7 @@ import ChartPanel from '@/components/dashboard/ChartPanel'
 import PostRow, { SignalPill, SourceIcon, fmtPct, timeAgo, TimeAgo, LocalDateTime } from '@/components/dashboard/PostCards'
 import SignalMonitor from '@/components/dashboard/SignalMonitor'
 import OpenPositions from '@/components/positions/OpenPositions'
+import PageHint from '@/components/ui/PageHint'
 
 interface Props {
   initialPosts: TrumpPost[]
@@ -265,13 +266,14 @@ export default function DashboardClient({ initialPosts }: Props) {
       <div className="page-head">
         <div>
           <h1 className="page-title">{isZh ? '信号总览' : 'Signal monitor'}</h1>
-          <p className="page-sub">
-            {`${actionablePosts} actionable signals · Auto-trader ${botReadiness === 'ready' ? 'ready' : hlApiKeySet ? 'saved' : isSubscribed ? 'subscribed' : 'standby'} · ${hasPriceData ? 'Live market context' : 'Waiting for market data'}`}
-          </p>
+          <PageHint count={`${actionablePosts} actionable · ${totalPosts} tracked`}>
+            All four signal pipelines in one place — Trump posts, BTC macro
+            bottom, funding-rate extremes, and KOL talks-vs-trades — alongside
+            your auto-trader's live state.
+          </PageHint>
         </div>
         <div className="row gap-s">
           <span className="chip"><span className="live-dot" />Live feed</span>
-          <span className="chip">{`${totalPosts} posts tracked`}</span>
         </div>
       </div>
 
@@ -279,7 +281,7 @@ export default function DashboardClient({ initialPosts }: Props) {
           signal. Always sits ABOVE everything so it's never missed. */}
       {btcReversalAlert && (
         <a
-          href={`/${locale}/btc`}
+          href={`/${locale}/macro`}
           style={{
             display: 'block', textDecoration: 'none',
             border: '1px solid color-mix(in oklab, var(--up) 45%, var(--line))',
@@ -290,7 +292,7 @@ export default function DashboardClient({ initialPosts }: Props) {
           <div style={{ display: 'flex', alignItems: 'center', gap: 10, flexWrap: 'wrap' }}>
             <span style={{ fontSize: 12, fontWeight: 800, letterSpacing: '.04em',
                            color: 'var(--up)', textTransform: 'uppercase' }}>
-              ⚡ BTC bottom-reversal signal
+              ⚡ Macro Vibes · Bottom trigger
             </span>
             <span style={{ fontSize: 11, fontWeight: 700, padding: '2px 8px',
                            borderRadius: 999, background: 'var(--up)', color: '#fff' }}>
@@ -301,7 +303,7 @@ export default function DashboardClient({ initialPosts }: Props) {
             </span>
             <span style={{ marginLeft: 'auto', fontSize: 12, fontWeight: 700,
                            color: 'var(--up)' }}>
-              Open BTC signal →
+              Open Macro Vibes →
             </span>
           </div>
           <div style={{ fontSize: 13, color: 'var(--ink-2)', marginTop: 6,