Add Positive Pay, statement guide v1.0, onboarding, and switch every feature on

- Positive Pay on the 12 Oct /pps contract (account number, not account ID):
  OTP enrollment, cheque submit, saved cheques, detail and stop payment.
  Full flow passed on the phone against mobile-banking-backend.lincpay.
- Statement & Mini Statement guide v1.0 (14 Oct): mini statement JSON on
  Home and the Statement screen; dated PDF export with the password rule.
- Onboarding slides and splash screen, Inter font, shared Icon and
  TypewriterText components, nearby branches via OpenStreetMap.
- Every feature switched on; the 14 Oct switch set is kept in
  featureConfig.stage-2026-10-14.ts. Loans run on demo data until the
  backend has /loans routes.
- npm run android wraps run-android for shells spawned from VS Code.
- OpenProject work packages updated to 14-10-2026 status, with screenshots
  of Positive Pay, statement, loans and cards.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/components/Stepper/index.tsx

@@ -1,6 +1,6 @@
 import React, { memo } from 'react';
 import { StyleSheet, Text, View, type StyleProp, type ViewStyle } from 'react-native';
-import Ionicons from '@react-native-vector-icons/ionicons';
+import { Icon } from '../Icon';
 
 import { useTheme } from '../../theme';
 
@@ -103,7 +103,7 @@ const StepperComponent = ({ steps, current, onBrand = false, style }: StepperPro
                 ]}
               >
                 {done ? (
-                  <Ionicons name="checkmark" size={13} color={markerInk} />
+                  <Icon name="checkmark" size={13} color={markerInk} />
                 ) : (
                   <Text style={[theme.text.eyebrow, styles.markerText, { color: markerInk }]}>
                     {index + 1}