Production polish: i18n shelved, PWA icons, SEO/GEO cleanup, UX fixes

Big-picture changes since 01be8e7:

New routes — /trump /btc /kol /trades /analytics /archive plus four
SEO landing pages (/methodology /glossary /case-studies /contact),
all served under /[locale]. Each has dedicated metadata + JSON-LD.

KOL page (new) — DigestWidget + OnchainWidget + TalkVsTradesWidget,
filter by handle/ticker, click-through to per-post detail with the
original AI-extracted ticker/conviction/quote.

BTC page (new) — tabbed: macro-bottom (AHR999 + 200WMA + Pi Cycle)
and funding-rate reversal, with live sparkline + threshold bands.

Telegram card on Settings — wallet-link code generation, status,
disconnect. Preferences moved into the bot itself (/trump /btc etc.)
so the card stays minimal.

SignalMonitor (new) — ETH/LINK Bollinger breakout monitor in its own
component, shares the singleton WsProvider so no second WS opens.

WS singleton refactor (lib/wsContext) — shared WsProvider + useWsSubscribe
hook. Cleanup now actively closes the socket on unmount; previously the
local `ws` couldn't be reached from cleanup and leaked one connection
per StrictMode remount.

OpenPositions polling no longer pops MetaMask in the background —
splits into load('first') for user-initiated and load('poll') that
uses getCachedViewEnvelope without signing.

i18n shelved — proxy.ts (Next 16 middleware rename) wires next-intl
but only Navbar + layout footer have translations. Rest of UI used
isZh ternary scattered across 28 files. All `const isZh = locale === 'zh'`
flipped to `const isZh = false` so every site renders English; Chinese
branches kept as dead code so revival is one regex away.
LanguageSwitch hidden but file kept. zh-CN hreflang removed from
metadata + sitemap to avoid duplicate-content penalties.

Wallet error handling — lib/walletError.ts: isUserRejection walks EIP-1193
code 4001 + .cause chain; previous string-match for "reject"/"denied"
broke for users running MetaMask in non-English UIs. 12 call sites
migrated across 5 components.

PWA icons — app/icon.tsx + app/apple-icon.tsx render the brand "α" via
Next's ImageResponse so no static PNG asset is required. manifest.ts
references /icon and /apple-icon dynamic routes.

OG image + sitemap + robots — dynamic 1200×630 OG card; robots blocks
both /en/settings and /zh/settings; sitemap only emits /en routes;
JSON-LD covers SoftwareApplication + Organization + 10-Q FAQPage.

Landing page polish — Launch Dashboard button stripped of magnetic
hover + shimmer + lift + glow expansion (multiple users found it busy);
hero scramble alphabet swapped to alphanumeric (was block characters);
"15 KOL feeds" copy updated to 19 in 5 places.

PostCards source icons — new entries for btc_bottom_reversal,
funding_reversal, kol_divergence so they no longer fall through to
the generic "first letter" fallback.

Archive page filter — excludes funding_reversal + kol_divergence
(previously only excluded truth + btc_bottom_reversal so new live
signals leaked into the legacy archive).

Cache + skeleton loading — lib/cache.ts SWR module with per-key TTL,
applied across the major pages so navigation feels instant.

SignConfirmSheet — 4 hardcoded Chinese strings translated to English
(English users were seeing zh-only "需要钱包签名" etc).

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

components/nav/LanguageSwitch.tsx

@@ -0,0 +1,78 @@
+'use client'
+
+import { useMemo } from 'react'
+import Link from 'next/link'
+import { usePathname, useSearchParams } from 'next/navigation'
+import { defaultLocale, locales, type Locale } from '@/i18n'
+
+function replaceLocale(pathname: string, nextLocale: Locale) {
+  const segments = pathname.split('/').filter(Boolean)
+  const current = segments[0]
+  if (locales.includes(current as Locale)) {
+    segments[0] = nextLocale
+  } else {
+    segments.unshift(nextLocale)
+  }
+  return '/' + segments.join('/')
+}
+
+export default function LanguageSwitch() {
+  const pathname = usePathname()
+  const searchParams = useSearchParams()
+
+  const activeLocale = useMemo<Locale>(() => {
+    const seg = pathname.split('/').filter(Boolean)[0]
+    return locales.includes(seg as Locale) ? (seg as Locale) : defaultLocale
+  }, [pathname])
+
+  return (
+    <div
+      aria-label="Language switch"
+      style={{
+        display: 'inline-flex',
+        alignItems: 'center',
+        gap: 4,
+        padding: 4,
+        borderRadius: 999,
+        background: 'var(--bg-sunk)',
+        border: '1px solid var(--line)',
+        flexShrink: 0,
+      }}
+    >
+      {([
+        ['en', 'EN'],
+        ['zh', '中文'],
+      ] as const).map(([locale, label]) => {
+        const active = activeLocale === locale
+        const nextPath = replaceLocale(pathname || `/${defaultLocale}`, locale)
+        const qs = searchParams.toString()
+        const href = qs ? `${nextPath}?${qs}` : nextPath
+        return (
+          <Link
+            key={locale}
+            href={href}
+            aria-pressed={active}
+            style={{
+              display: 'inline-flex',
+              alignItems: 'center',
+              justifyContent: 'center',
+              minWidth: locale === 'zh' ? 48 : 40,
+              padding: '6px 10px',
+              borderRadius: 999,
+              border: 'none',
+              background: active ? 'var(--ink)' : 'transparent',
+              color: active ? 'var(--bg)' : 'var(--ink-3)',
+              fontSize: 12,
+              fontWeight: 700,
+              lineHeight: 1,
+              cursor: 'pointer',
+              textDecoration: 'none',
+            }}
+          >
+            {label}
+          </Link>
+        )
+      })}
+    </div>
+  )
+}

components/nav/Navbar.tsx

@@ -4,6 +4,9 @@ import { useState, useEffect } from 'react'
 import Link from 'next/link'
 import { usePathname } from 'next/navigation'
 import { useAccount, useConnect, useDisconnect } from 'wagmi'
+import { useTranslations } from 'next-intl'
+// i18n shelved — LanguageSwitch hidden but kept on disk for future revival.
+// import LanguageSwitch from './LanguageSwitch'
 
 function BrandMark() {
   return <span className="brand-mark">α</span>
@@ -43,28 +46,59 @@ function ThemeToggle() {
 }
 
 export default function Navbar() {
+  const t = useTranslations('nav')
   const pathname = usePathname()
   const { address, isConnected } = useAccount()
   const { connect, connectors } = useConnect()
   const { disconnect } = useDisconnect()
   const [mounted, setMounted] = useState(false)
   const [walletMenuOpen, setWalletMenuOpen] = useState(false)
+  const [copied, setCopied] = useState(false)
+
+  async function copyAddress(addr: string) {
+    let ok = false
+    try {
+      if (navigator.clipboard?.writeText) {
+        await navigator.clipboard.writeText(addr)
+        ok = true
+      } else {
+        // Fallback for non-secure contexts where the Clipboard API is absent.
+        const ta = document.createElement('textarea')
+        ta.value = addr
+        ta.style.position = 'fixed'
+        ta.style.opacity = '0'
+        document.body.appendChild(ta)
+        ta.select()
+        ok = document.execCommand('copy')
+        document.body.removeChild(ta)
+      }
+    } catch { ok = false }
+    setCopied(ok)
+    setTimeout(() => setCopied(false), 1500)
+  }
   useEffect(() => { setMounted(true) }, [])
   useEffect(() => { setWalletMenuOpen(false) }, [pathname, address])
 
   const locale = pathname.split('/')[1] || 'en'
   const path = '/' + pathname.split('/').slice(2).join('/')
 
+  // Two independent trading systems get their own top-level tabs — no
+  // intermediate "Signals" hub. Trump = event scalp; BTC = reversal.
   const tabs = [
-    { key: '/', label: 'Overview' },
-    { key: '/posts', label: 'Signals' },
-    { key: '/trades', label: 'Trades' },
-    { key: '/analytics', label: 'Analytics' },
-    { key: '/settings', label: 'Settings' },
+    { key: '/',          label: t('tabs.overview') },
+    { key: '/trump',     label: t('tabs.trump') },
+    { key: '/btc',       label: t('tabs.btc') },
+    { key: '/kol',       label: t('tabs.kol') },
+    { key: '/trades',    label: t('tabs.trades') },
+    { key: '/analytics', label: t('tabs.analytics') },
+    { key: '/settings',  label: t('tabs.settings') },
   ]
 
   function isActive(key: string) {
     if (key === '/') return path === '/' || path === '//'
+    // /posts (legacy hub) still resolves but isn't a tab; treat it + /archive
+    // as part of the Trump section so a tab stays highlighted there.
+    if (key === '/trump') return path.startsWith('/trump') || path.startsWith('/posts') || path.startsWith('/archive')
     return path.startsWith(key)
   }
 
@@ -72,19 +106,19 @@ export default function Navbar() {
 
   return (
     <nav className="nav">
-      <div className="brand">
+      <Link href={`/${locale}`} className="brand" style={{ textDecoration: 'none', color: 'inherit' }}>
         <BrandMark />
-        <span>Trump Alpha</span>
-      </div>
+        <span>{t('brand')}</span>
+      </Link>
 
       <div className="nav-tabs">
-        {tabs.map(t => (
+        {tabs.map(tab => (
           <Link
-            key={t.key}
-            href={`/${locale}${t.key === '/' ? '' : t.key}`}
-            className={`nav-tab ${isActive(t.key) ? 'active' : ''}`}
+            key={tab.key}
+            href={`/${locale}${tab.key === '/' ? '' : tab.key}`}
+            className={`nav-tab ${isActive(tab.key) ? 'active' : ''}`}
           >
-            {t.label}
+            {tab.label}
           </Link>
         ))}
       </div>
@@ -92,9 +126,10 @@ export default function Navbar() {
       <div className="nav-spacer" />
 
       <div className="nav-right">
+        {/* <LanguageSwitch /> — shelved until i18n coverage is complete */}
         <ThemeToggle />
         {!mounted ? (
-          <button className="connect-btn lg" suppressHydrationWarning>Connect wallet</button>
+          <button className="connect-btn lg" suppressHydrationWarning>{t('actions.connectWallet')}</button>
         ) : isConnected && shortAddr ? (
           <div className="wallet-menu-wrap" style={{ position: 'relative' }}>
             <button
@@ -116,11 +151,10 @@ export default function Navbar() {
                 role="menuitem"
                 onMouseDown={(e) => {
                   e.preventDefault()
-                  if (address) navigator.clipboard?.writeText(address)
-                  setWalletMenuOpen(false)
+                  if (address) copyAddress(address)
                 }}
               >
-                Copy address
+                {copied ? t('actions.copied') : t('actions.copyAddress')}
               </button>
               <button
                 role="menuitem"
@@ -131,7 +165,7 @@ export default function Navbar() {
                   setWalletMenuOpen(false)
                 }}
               >
-                Disconnect
+                {t('actions.disconnect')}
               </button>
             </div>
           </div>
@@ -143,7 +177,7 @@ export default function Navbar() {
               if (connector) connect({ connector })
             }}
           >
-            Connect wallet
+            {t('actions.connectWallet')}
           </button>
         )}
       </div>