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>

lib/walletError.ts

@@ -0,0 +1,39 @@
+/**
+ * MetaMask / EIP-1193 wallet error helpers.
+ *
+ * Previously the codebase detected user rejections by string-matching the
+ * error message for "reject" or "denied". That breaks when MetaMask's UI
+ * language is set to anything other than English (the message is translated
+ * but our match string isn't). The reliable signal is the EIP-1193 error
+ * code: 4001 = "User rejected the request".
+ *
+ * Wagmi sometimes wraps the underlying provider error inside `.cause`, so we
+ * walk that chain too.
+ */
+
+interface WithCode { code?: number | string; cause?: unknown }
+
+export function isUserRejection(err: unknown): boolean {
+  // Walk a small depth of .cause chains since wagmi/viem wrap provider errors
+  let cur: unknown = err
+  for (let i = 0; i < 4 && cur; i++) {
+    const c = (cur as WithCode)?.code
+    if (c === 4001 || c === 'ACTION_REJECTED' || c === 'USER_REJECTED') return true
+    cur = (cur as WithCode)?.cause
+  }
+  // Last-resort string fallback for providers that don't expose a code field.
+  // Kept narrow — "reject" + "denied" + a couple of locale variants we've
+  // actually seen from MetaMask zh-CN ("拒绝") and Rabby ("rejected by user").
+  const m = err instanceof Error ? err.message : ''
+  return /reject|denied|cancell|拒绝|已取消/i.test(m)
+}
+
+/**
+ * Convenience: return either a friendly cancellation label or a truncated
+ * version of the real error message — never raw user-facing crash text.
+ */
+export function walletErrorLabel(err: unknown, cancelledLabel = 'Cancelled', maxLen = 110): string {
+  if (isUserRejection(err)) return cancelledLabel
+  const m = err instanceof Error ? err.message : String(err ?? '')
+  return m.slice(0, maxLen) || 'unknown error'
+}