feat: Pergala USDT multisig a tevahî li ser chain

Taybetmendiyên Nû:
• pallet-multisig bi kar anîna - 3/5 threshold
• wUSDT asset (ID: 2) - 1:1 backing bi USDT
• Multisig members: Serok, SerokiMeclise, Xezinedar, Noter, Berdevk
• Otomatîk query ji pallet-tiki (unique roles)

Lib/Utilities:
✅ src/lib/multisig.ts - Multisig utilities (members, tx, queries)
✅ src/lib/usdt.ts - wUSDT bridge helpers (mint, burn, reserves)
✅ src/lib/wallet.ts - WUSDT asset ID zêde kir

Components:
✅ MultisigMembers.tsx - Multisig members display
✅ USDTBridge.tsx - Deposit/withdrawal UI
✅ ReservesDashboard.tsx - Reserve monitoring dashboard

Pages & Routes:
✅ ReservesDashboardPage.tsx - /reserves route
✅ App.tsx - Route integration

Taybetmendî:
• Full on-chain multisig (no Ethereum dependency)
• Automatic tiki holder lookup
• Reserve health monitoring
• Tiered withdrawal limits (instant, standard, large)
• Event subscriptions (mint/burn tracking)
• 1:1 USDT backing verification

Documentation:
✅ USDT_MULTISIG_SETUP.md - Complete setup guide

🤖 Bi [Claude Code](https://claude.com/claude-code) re hate çêkirin

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

src/App.tsx

@@ -9,6 +9,7 @@ import ProfileSettings from '@/pages/ProfileSettings';
 import AdminPanel from '@/pages/AdminPanel';
 import WalletDashboard from './pages/WalletDashboard';
 import PoolDashboardPage from './pages/PoolDashboard';
+import ReservesDashboardPage from './pages/ReservesDashboardPage';
 import { AppProvider } from '@/contexts/AppContext';
 import { PolkadotProvider } from '@/contexts/PolkadotContext';
 import { WalletProvider } from '@/contexts/WalletContext';
@@ -62,6 +63,11 @@ function App() {
                         <PoolDashboardPage />
                       </ProtectedRoute>
                     } />
+                    <Route path="/reserves" element={
+                      <ProtectedRoute>
+                        <ReservesDashboardPage />
+                      </ProtectedRoute>
+                    } />
                     <Route path="*" element={<NotFound />} />
                   </Routes>
                   </Router>