fix(analytics): never mix paper + live P&L; settings live-switch copy

Money-safety/accuracy bug: analytics computed total P&L, win rate, drawdown,
and every metric over ALL trades regardless of is_paper. A user who tried
paper mode then went live saw simulated and real P&L summed into one number
on the page whose entire purpose is 'did the bot make REAL money'.

Now: split trades by is_paper. Default to LIVE. A Live/Paper toggle appears
only when the wallet has both; otherwise auto-pick whichever exists. Paper
view shows a prominent 'SIMULATED — not real-money results' banner. All
metrics derive from the selected mode's trades only.

Also: BotConfigPanel handleUpgradeToLive copy now states Auto-Trade is forced
OFF on the paper→live switch (matches backend subscribe.py safety reset).

tsc + next build clean.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/[locale]/layout.tsx

@@ -58,7 +58,7 @@ export default async function LocaleLayout({ children, params }: LayoutProps) {
           color: 'var(--ink-3)',
           marginTop: 48,
         }}>
-          <span>© {new Date().getFullYear()} Trump Alpha</span>
+          <span>© {new Date().getFullYear()} Trump Alpha — a research project by Endorphin</span>
           <Link href={href('/methodology')} style={{ color: 'var(--ink-3)', textDecoration: 'none' }}>{t('methodology')}</Link>
           <Link href={href('/glossary')} style={{ color: 'var(--ink-3)', textDecoration: 'none' }}>{t('glossary')}</Link>
           <Link href={href('/case-studies')} style={{ color: 'var(--ink-3)', textDecoration: 'none' }}>{t('caseStudies')}</Link>