Phase 4 §2 + §1/§4: OnboardingIntent post-OTP routing + test naming + register-screen overflow

Spec §2 (flow_customer.mermaid) routes post-OTP based on user-lookup +
has_transacted, but the implementation previously dumped every OTP
success on /home. Introduce `OnboardingIntent` provider: set to
`onboarding` by routeForVerifChoice's verified branch (the "aku mau
curhat" transaction journey), set to `recover` by SHome1st's masuk →
banner. Router redirect on AuthAuthenticatedData+isAuthRoute consumes it:
`onboarding` → /payment/entry (dispatches S6 paywall vs PickMethod via
first_session_discount.eligible); `recover` → /home. Intent is reset in
/payment/entry's initState so subsequent masuk → flows don't inherit it.

auth_notifier.verifyOtp uses .copyWithPrevious on AsyncError so
valueOrNull retains AuthOtpSentData/AuthAnonymousData through OTP
failures — required for the OTP-blocked recovery path
(/onboarding/anon/method → /payment/method-pick) to clear the global
redirect without bouncing to /home. Router also extends the
isAuthRoute/isOnboardingFlow carve-out to AuthOtpSentData.

Maestro tests adopt `ts-<app>-<NN>-<MM>-<descriptor>.yaml` convention:
NN = mermaid section, MM = sub-flow index. New ts-customer-02-01..05
cover the §2 branches (verified brand-new → S6, existing-no-tx → S6,
existing-tx → method-pick, OTP-blocked → method-pick, anonymous first-
timer → method-pick); deferred 02-06/07/08/09 documented in
README_section_02.md. TS-07 → ts-customer-02-10 (masuk → recovery);
TS-01..06 → ts-customer-04-01..06 (§4 returning-user). Shared
onboarding_new_user_verified.yaml subflow extracted.

Register screen's body Column now uses LayoutBuilder + SingleChildScrollView
+ ConstrainedBox + IntrinsicHeight so the keyboard-open layout no
longer overflows by 1.3 px (verified visually).

Spec prose updated at flow_customer.mermaid §2 to describe the
intent-driven routing + login-vs-transaction divergence.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

client_app/lib/features/home/home_screen.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import '../../core/auth/auth_notifier.dart';
+import '../../core/auth/onboarding_intent_provider.dart';
 import '../../core/availability/mitra_availability_notifier.dart';
 import '../../core/chat/active_session_notifier.dart';
 import '../../core/notifications/notif_permission.dart';
@@ -198,11 +199,11 @@ class _SHome1stView extends ConsumerWidget {
   }
 }
 
-class _LoginRecoverBanner extends StatelessWidget {
+class _LoginRecoverBanner extends ConsumerWidget {
   const _LoginRecoverBanner();
 
   @override
-  Widget build(BuildContext context) {
+  Widget build(BuildContext context, WidgetRef ref) {
     return Padding(
       padding: const EdgeInsets.fromLTRB(16, 12, 16, 0),
       child: Material(
@@ -210,7 +211,14 @@ class _LoginRecoverBanner extends StatelessWidget {
         borderRadius: HaloRadius.md,
         child: InkWell(
           borderRadius: HaloRadius.md,
-          onTap: () => context.push('/auth/register'),
+          onTap: () {
+            // Recovery flow — post-OTP should land on /home (the user wants
+            // their history), NOT /payment/entry. Defensive reset in case a
+            // prior onboarding run left the intent dirty.
+            ref.read(onboardingIntentProvider.notifier).state =
+                OnboardingIntent.recover;
+            context.push('/auth/register');
+          },
           child: Container(
             padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
             decoration: BoxDecoration(
@@ -786,11 +794,13 @@ class _NotifDeniedBanner extends ConsumerWidget {
               ),
             ),
           ),
-          TextButton(
-            style: TextButton.styleFrom(
+          OutlinedButton(
+            style: OutlinedButton.styleFrom(
               foregroundColor: HaloTokens.brandDark,
+              side: const BorderSide(color: HaloTokens.brandDark, width: 1),
+              shape: const StadiumBorder(),
               padding: const EdgeInsets.symmetric(
-                horizontal: HaloSpacing.s8,
+                horizontal: HaloSpacing.s12,
               ),
               minimumSize: const Size(0, 32),
               tapTargetSize: MaterialTapTargetSize.shrinkWrap,