feat: revamp dashboard, trades, and add landing/legal pages

- Major UI updates across dashboard, analytics, posts, trades, settings
- New landing page, robots/sitemap, contact/privacy/terms pages
- Updated globals.css with extensive styling and new landing.css
- Refactor signedRequest, realtime data hook, and dashboard store

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

store/dashboard.ts

@@ -6,6 +6,7 @@ interface DashboardState {
   timeframe: '5m' | '15m' | '1H' | '4H' | '1D' | '1W'
   walletAddress: string | null
   isSubscribed: boolean
+  botReadiness: 'unknown' | 'saved' | 'verified' | 'ready'
   hlApiKeySet: boolean          // true if user already has a key saved in backend
   hlApiKeyMasked: string | null // e.g. "...a1b2c3" shown after successful save
   livePrices: { BTC: number | null; ETH: number | null }
@@ -14,6 +15,7 @@ interface DashboardState {
   setTimeframe: (tf: '5m' | '15m' | '1H' | '4H' | '1D' | '1W') => void
   setWallet: (address: string | null) => void
   setSubscribed: (subscribed: boolean) => void
+  setBotReadiness: (state: DashboardState['botReadiness']) => void
   setHlApiKeySet: (set: boolean, masked?: string) => void
   setLivePrice: (asset: 'BTC' | 'ETH', price: number) => void
 }
@@ -24,6 +26,7 @@ export const useDashboardStore = create<DashboardState>((set) => ({
   timeframe: '4H',
   walletAddress: null,
   isSubscribed: false,
+  botReadiness: 'unknown',
   hlApiKeySet: false,
   hlApiKeyMasked: null,
   livePrices: { BTC: null, ETH: null },
@@ -32,8 +35,14 @@ export const useDashboardStore = create<DashboardState>((set) => ({
   setTimeframe: (timeframe) => set({ timeframe }),
   setWallet: (walletAddress) => set({ walletAddress }),
   setSubscribed: (isSubscribed) => set({ isSubscribed }),
+  setBotReadiness: (botReadiness) => set({ botReadiness }),
   setHlApiKeySet: (keySet, masked) =>
-    set({ hlApiKeySet: keySet, hlApiKeyMasked: masked ?? null }),
+    set((s) => ({
+      hlApiKeySet: keySet,
+      // Preserve existing mask when called without one (e.g. the /public poll
+      // only returns a boolean). Only explicitly clear when keySet=false.
+      hlApiKeyMasked: !keySet ? null : (masked !== undefined ? masked : s.hlApiKeyMasked),
+    })),
   setLivePrice: (asset, price) =>
     set((s) => ({ livePrices: { ...s.livePrices, [asset]: price } })),
 }))