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/signals/SystemControl.tsx

@@ -0,0 +1,267 @@
+'use client'
+
+import { useState, useEffect, useCallback } from 'react'
+import { useLocale } from 'next-intl'
+import { useAccount, useSignMessage } from 'wagmi'
+import { getUserPublic, setAutoTrade, type UserPublic } from '@/lib/api'
+import { signRequest } from '@/lib/signedRequest'
+import { isUserRejection, walletErrorLabel } from '@/lib/walletError'
+import { confirmSign } from '@/components/wallet/SignConfirmSheet'
+
+/**
+ * ONE control: the master Auto-Trade switch.
+ *
+ *   OFF (default, safe) — signals are still scanned & shown in the feed,
+ *                         but NO trade is opened. Pure monitoring.
+ *   ON                  — a qualifying signal auto-opens a trade (full
+ *                         System-2 risk: dynamic leverage, staged de-risk,
+ *                         ratchet, peak-trail). De-risk / stop-loss always
+ *                         run on open positions regardless — never toggleable.
+ *
+ * Replaces the old scanner-toggle / timed manual-window / schedule / paper
+ * trio. Circuit breaker is read-only; turning Auto-Trade ON acknowledges +
+ * clears a tripped breaker. Per-trade pyramiding is the "Grow" switch on
+ * each open position (Trades page), not here.
+ */
+
+const SYS = {
+  trump: { idx: '①', name: 'Trump', accent: '#b45309', soft: 'rgba(180,83,9,0.08)' },
+  btc:   { idx: '②', name: 'BTC',   accent: '#16a34a', soft: 'rgba(22,163,74,0.08)' },
+} as const
+
+const ROW: React.CSSProperties = {
+  display: 'flex', alignItems: 'center', justifyContent: 'space-between',
+  gap: 12, padding: '8px 0', flexWrap: 'wrap',
+}
+const LABEL: React.CSSProperties = { fontSize: 13, color: 'var(--ink-2)' }
+
+export default function SystemControl({ system }: { system: 'trump' | 'btc' }) {
+  const locale = useLocale()
+  const isZh = false  // i18n shelved — Chinese branches kept as dead code for future revival; see messages/zh.json
+  const s = SYS[system]
+  const { address, isConnected } = useAccount()
+  const { signMessageAsync } = useSignMessage()
+
+  const [mounted, setMounted] = useState(false)
+  const [pub, setPub] = useState<UserPublic | null>(null)
+  const [busy, setBusy] = useState(false)
+  const [err, setErr] = useState('')
+
+  useEffect(() => { setMounted(true) }, [])
+
+  const refresh = useCallback(async () => {
+    if (!address) { setPub(null); return }
+    const p = await getUserPublic(address.toLowerCase()).catch(() => null)
+    setPub(p)
+  }, [address])
+
+  useEffect(() => {
+    refresh()
+    const poll = setInterval(refresh, 30_000)
+    return () => clearInterval(poll)
+  }, [refresh])
+
+  const subscribed = !!pub?.active
+  const paper      = !!pub?.paper_mode
+  const autoOn     = !!pub?.auto_trade
+  const cbTripped  = !!pub?.circuit_breaker_tripped_at &&
+    (Date.now() - new Date(pub!.circuit_breaker_tripped_at!).getTime()) < 24 * 3600 * 1000
+
+  async function flipAuto(on: boolean) {
+    if (busy) return
+    if (!address)   { setErr(isZh ? '请先连接右上角的钱包。' : 'Connect your wallet first (top-right).'); return }
+    if (!subscribed) { setErr(isZh ? '钱包尚未订阅，请先去设置页完成订阅。' : 'Wallet not subscribed — subscribe on the Settings page first.'); return }
+    if (autoOn === on) return
+
+    // Show pre-signing confirmation sheet before triggering MetaMask
+    const confirmed = await confirmSign(on
+      ? {
+          label: paper
+            ? (isZh ? '开启 Auto-Trade（模拟模式）' : 'Enable Auto-Trade (paper mode)')
+            : (isZh ? '开启 Auto-Trade（真实资金）' : 'Enable Auto-Trade (live capital)'),
+          description: paper
+            ? (isZh
+              ? '机器人将在信号触发时自动开仓（Paper 模式，无真实资金）。钱包签名仅用于身份验证。'
+              : 'The bot will auto-open positions when a qualifying signal fires in paper mode. No real capital is used. The wallet signature is only for identity verification.')
+            : (isZh
+              ? '机器人将在 Hyperliquid 上用真实资金自动开仓。止损与分级减仓始终生效保护仓位。'
+              : 'The bot will auto-open real positions on Hyperliquid. Stop-loss and staged de-risking remain active to protect the position.'),
+          danger: !paper,
+        }
+      : {
+          label: isZh ? '关闭 Auto-Trade' : 'Disable Auto-Trade',
+          description: isZh
+            ? '停止自动开仓。已有持仓的止损与减仓逻辑仍会继续运行。'
+            : 'Stop opening new trades automatically. Risk controls on existing positions will keep running.',
+          danger: false,
+        }
+    )
+    if (!confirmed) return
+
+    setErr(''); setBusy(true)
+    try {
+      const env = await signRequest({
+        action: 'set_auto_trade', wallet: address,
+        body: { enabled: on }, signMessageAsync,
+      })
+      const r = await setAutoTrade(env, on)
+      setPub(p => p ? {
+        ...p,
+        auto_trade: r.auto_trade,
+        ...(r.circuit_breaker_cleared
+          ? { circuit_breaker_tripped_at: null, circuit_breaker_reason: null }
+          : {}),
+      } : p)
+    } catch (e) {
+      if (isUserRejection(e)) {
+        setErr(isZh ? '已取消' : 'Cancelled')
+      } else {
+        setErr(walletErrorLabel(e, isZh ? '已取消' : 'Cancelled', 110)
+               || (isZh ? 'Auto-Trade 切换失败' : 'Auto-Trade toggle failed'))
+      }
+    } finally { setBusy(false) }
+  }
+
+  if (!mounted) {
+    return (
+      <div className="card" style={{ padding: 16, marginBottom: 16, fontSize: 13, color: 'var(--ink-3)' }}>
+        {isZh
+          ? `连接右上角的钱包后，才能操作 ${s.name} 模块。`
+          : `Connect a wallet (top-right) to operate the ${s.name} system.`}
+      </div>
+    )
+  }
+
+  if (!isConnected) {
+    return (
+      <div className="card" style={{ padding: 16, marginBottom: 16, fontSize: 13, color: 'var(--ink-3)' }}>
+        {isZh
+          ? `连接右上角的钱包后，才能操作 ${s.name} 模块。`
+          : `Connect a wallet (top-right) to operate the ${s.name} system.`}
+      </div>
+    )
+  }
+
+  // ── Net result — the single sentence that matters ─────────────────────────
+  let netOk = false
+  let netMsg = ''
+  if (!subscribed) {
+    netMsg = isZh
+      ? '钱包还没订阅，请先去设置页完成订阅。'
+      : 'Wallet not subscribed — subscribe on the Settings page first.'
+  } else if (cbTripped) {
+    netMsg = isZh
+      ? `熔断器已触发（${pub?.circuit_breaker_reason || '风险限制'}）。重新打开 Auto-Trade 才会确认并恢复。`
+      : `Circuit breaker tripped (${pub?.circuit_breaker_reason || 'risk limit'}). Turn Auto-Trade ON to acknowledge & resume.`
+  } else if (!autoOn) {
+    netMsg = isZh
+      ? 'Auto-Trade 当前为关闭（全局）: Trump 和 BTC 信号仍会显示，但不会自动开仓。'
+      : 'Auto-Trade is OFF (global) — Trump AND BTC signals are shown in the feed but NOT traded.'
+  } else {
+    netOk = true
+    netMsg = isZh
+      ? `Auto-Trade 已开启（全局，覆盖 Trump 和 BTC）: 下一条合格信号会自动开出${paper ? '模拟' : '真实'}仓位。`
+      : `Auto-Trade ON (global, both Trump & BTC) — will open a ${paper ? 'PAPER' : 'LIVE'} trade on the next qualifying signal.`
+  }
+
+  const Pill = ({ active, onClick, children, tone }: {
+    active: boolean; onClick: () => void; children: React.ReactNode
+    tone: 'green' | 'idle'
+  }) => {
+    const bg = active ? (tone === 'green' ? 'var(--up, #16a34a)' : 'var(--ink-3)') : 'transparent'
+    return (
+      <button onClick={onClick} disabled={busy}
+        style={{
+          padding: '8px 20px', fontSize: 13, fontWeight: 800, borderRadius: 8,
+          cursor: busy ? 'wait' : 'pointer',
+          border: active ? `1px solid ${bg}` : '1px solid var(--line)',
+          background: active ? bg : 'transparent',
+          color: active ? '#fff' : 'var(--ink-3)',
+        }}>{children}</button>
+    )
+  }
+
+  return (
+    <div className="card" style={{ padding: 0, marginBottom: 16, overflow: 'hidden' }}>
+      {/* Header */}
+      <div style={{ padding: '14px 16px', background: s.soft,
+                    borderLeft: `4px solid ${s.accent}` }}>
+        <div style={{ fontSize: 14, fontWeight: 700, color: s.accent }}>
+          {s.idx} {s.name} {isZh ? '控制面板' : '— control'}
+        </div>
+      </div>
+
+      {/* Master Auto-Trade switch */}
+      <div style={{ padding: '16px' }}>
+        <div style={ROW}>
+          <div>
+            <div style={{ fontSize: 14, fontWeight: 700 }}>
+              Auto-Trade <span style={{ fontSize: 10, fontWeight: 600,
+                color: 'var(--ink-4)', marginLeft: 6 }}>{isZh ? '· 全局（Trump + BTC）' : '· GLOBAL (Trump + BTC)'}</span>
+            </div>
+            <div style={{ fontSize: 11, color: 'var(--ink-4)', marginTop: 3, maxWidth: 480, lineHeight: 1.5 }}>
+              {isZh ? (
+                <>
+                  <strong>一个开关控制两套系统。</strong> 关闭时：信号仍会扫描并显示，但不会自动交易。
+                  开启时：满足条件的 Trump 或 BTC 信号都会自动开仓。无论开关状态如何，
+                  已开仓位的止损和分级降风险都会继续保护持仓。
+                </>
+              ) : (
+                <>
+                  <strong>One switch for both systems.</strong> OFF: signals scanned
+                  &amp; shown in the feed, nothing traded. ON: a qualifying Trump OR
+                  BTC signal auto-opens a trade. Stop-loss / staged de-risk always
+                  protect open positions either way.
+                </>
+              )}
+            </div>
+          </div>
+          <div style={{ display: 'flex', gap: 6 }}>
+            <Pill active={autoOn}  onClick={() => flipAuto(true)}  tone="green">ON</Pill>
+            <Pill active={!autoOn} onClick={() => flipAuto(false)} tone="idle">OFF</Pill>
+          </div>
+        </div>
+
+        {/* Read-only status */}
+        <div style={{ ...ROW, borderTop: '1px solid var(--line)', marginTop: 8, paddingTop: 12 }}>
+          <span style={LABEL}>{isZh ? '执行模式' : 'Execution mode'}</span>
+          <span style={{ fontSize: 12, fontWeight: 700, color: paper ? '#f59e0b' : 'var(--up)' }}>
+            {paper ? (isZh ? '📝 模拟' : '📝 PAPER') : (isZh ? '💰 真实资金' : '💰 LIVE')}
+            <span style={{ color: 'var(--ink-4)', fontWeight: 400, marginLeft: 8 }}>
+              {isZh ? '· 订阅时确定' : '· set when subscribing'}
+            </span>
+          </span>
+        </div>
+        <div style={ROW}>
+          <span style={LABEL}>{isZh ? '熔断器' : 'Circuit breaker'}</span>
+          <span style={{ fontSize: 12, fontWeight: 700,
+                         color: cbTripped ? 'var(--down)' : 'var(--up)' }}>
+            {cbTripped
+              ? (isZh ? `🚨 已触发（${pub?.circuit_breaker_reason}）` : `🚨 tripped (${pub?.circuit_breaker_reason})`)
+              : (isZh ? '✓ 正常' : '✓ clear')}
+          </span>
+        </div>
+
+        {err && (
+          <div style={{ fontSize: 11, color: 'var(--down)', marginTop: 10 }}>● {err}</div>
+        )}
+      </div>
+
+      {/* Net result */}
+      <div style={{
+        padding: '14px 16px',
+        background: netOk ? 'var(--up-soft)' : 'var(--down-soft, rgba(220,38,38,.08))',
+        borderTop: '1px solid var(--line)',
+      }}>
+        <div style={{ fontSize: 11, fontWeight: 700, letterSpacing: '.06em',
+                      textTransform: 'uppercase', color: 'var(--ink-3)', marginBottom: 4 }}>
+          {isZh ? '⟹ 当前结果' : '⟹ Net result'}
+        </div>
+        <div style={{ fontSize: 14, fontWeight: 700,
+                      color: netOk ? 'var(--up)' : 'var(--down)' }}>
+          {netOk ? '✅ ' : '⛔ '}{netMsg}
+        </div>
+      </div>
+    </div>
+  )
+}