feat(p2p): add Phase 3 dispute system components

- Add DisputeModal.tsx with reason selection, evidence upload, terms acceptance
- Add P2PDispute.tsx page with evidence gallery, status timeline, real-time updates
- Integrate dispute button in P2PTrade.tsx
- Add /p2p/dispute/:disputeId route to App.tsx
- Add P2P test suite with MockStore pattern (32 tests passing)
- Update P2P-BUILDING-PLAN.md with Phase 3 progress (70% complete)
- Fix lint errors in test files and components

web/src/App.tsx

@@ -36,6 +36,9 @@ const GovernmentEntrance = lazy(() => import('./pages/citizens/GovernmentEntranc
 const Elections = lazy(() => import('./pages/Elections'));
 const EducationPlatform = lazy(() => import('./pages/EducationPlatform'));
 const P2PPlatform = lazy(() => import('./pages/P2PPlatform'));
+const P2PTrade = lazy(() => import('./pages/P2PTrade'));
+const P2POrders = lazy(() => import('./pages/P2POrders'));
+const P2PDispute = lazy(() => import('./pages/P2PDispute'));
 const DEXDashboard = lazy(() => import('./components/dex/DEXDashboard').then(m => ({ default: m.DEXDashboard })));
 const Presale = lazy(() => import('./pages/Presale'));
 const PresaleList = lazy(() => import('./pages/launchpad/PresaleList'));
@@ -176,6 +179,21 @@ function App() {
                                   <P2PPlatform />
                                 </ProtectedRoute>
                               } />
+                              <Route path="/p2p/trade/:tradeId" element={
+                                <ProtectedRoute>
+                                  <P2PTrade />
+                                </ProtectedRoute>
+                              } />
+                              <Route path="/p2p/orders" element={
+                                <ProtectedRoute>
+                                  <P2POrders />
+                                </ProtectedRoute>
+                              } />
+                              <Route path="/p2p/dispute/:disputeId" element={
+                                <ProtectedRoute>
+                                  <P2PDispute />
+                                </ProtectedRoute>
+                              } />
                               <Route path="/dex" element={
                                 <ProtectedRoute>
                                   <DEXDashboard />