feat: scaffold transaction presentation in bdk_demo active wallet flow

bdk_demo/README.md

@@ -1,10 +1,10 @@
 # BDK-Dart Wallet (Flutter)
 
-The _BDK-Dart Wallet_ is a wallet built as a reference app for the [bitcoindevkit](https://github.com/bitcoindevkit) on Flutter using [bdk-dart](https://github.com/bitcoindevkit/bdk-dart). This repository is not intended to produce a production-ready wallet, the app only works on Signet, Testnet 3, and Regtest.
+The _BDK-Dart Wallet_ is a Flutter reference app for [bitcoindevkit](https://github.com/bitcoindevkit) using [bdk-dart](https://github.com/bitcoindevkit/bdk-dart). It is intentionally a demo and scaffold, not a production-ready wallet, and currently targets Signet, Testnet 3, and Regtest.
 
 The demo app is built with the following goals in mind:
 1. Be a reference application for the `bdk_dart` API on Flutter (iOS & Android).
-2. Showcase the core features of the bitcoindevkit library: wallet creation, recovery, Esplora/Electrum sync, send, receive, and transaction history.
+2. Sketch the wallet creation, recovery, sync, send, receive, and transaction-history flows the app can grow into over time.
 3. Demonstrate a clean, testable Flutter architecture using Riverpod and GoRouter.
 
 ## Features
@@ -19,12 +19,14 @@ The demo app is built with the following goals in mind:
 | Wallet balance (BTC / sats toggle) | - |
 | Receive (address generation + QR) | - |
 | Send (single recipient + fee rate) | - |
-| Transaction history | - |
+| Transaction history | Scaffolded placeholder UI |
 | Transaction detail | - |
 | Recovery data viewer | - |
 | Theme toggle (light / dark) | - |
 | In-app log viewer | - |
 
+Today the active-wallet flow is deliberately small: it loads a wallet scaffold, shows placeholder wallet metadata, and renders placeholder transaction rows. No real wallet sync or transaction fetching is implemented yet.
+
 ## Architecture
 
 Clean Architecture + Riverpod:
@@ -42,9 +44,9 @@ lib/
 **Note:**
 - **State management:** Riverpod
 - **Navigation:** GoRouter
-- **Domain objects:** Uses `bdk_dart` types directly
-- **Secure storage:** `flutter_secure_storage` for mnemonics and descriptors
-- **BDK threading:** `Isolate.run()` for heavy sync operations
+- **Domain objects:** Uses app-local scaffold models with room to grow into fuller `bdk_dart` integrations
+- **Secure storage:** Planned for mnemonic and descriptor handling as wallet flows land
+- **Heavy sync work:** Planned to move off the UI isolate when real sync is added
 
 ## Getting Started
 

bdk_demo/lib/core/router/app_router.dart

@@ -1,5 +1,7 @@
 import 'package:go_router/go_router.dart';
 import 'package:bdk_demo/features/shared/widgets/placeholder_page.dart';
+import 'package:bdk_demo/features/wallet_setup/active_wallets_page.dart';
+import 'package:bdk_demo/features/wallet_setup/transaction_detail_page.dart';
 import 'package:bdk_demo/features/wallet_setup/wallet_choice_page.dart';
 
 abstract final class AppRoutes {
@@ -30,8 +32,7 @@ GoRouter createRouter() => GoRouter(
     GoRoute(
       path: AppRoutes.activeWallets,
       name: 'activeWallets',
-      builder: (context, state) =>
-          const PlaceholderPage(title: 'Active Wallets'),
+      builder: (context, state) => const ActiveWalletsPage(),
     ),
     GoRoute(
       path: AppRoutes.createWallet,
@@ -72,7 +73,7 @@ GoRouter createRouter() => GoRouter(
       name: 'transactionDetail',
       builder: (context, state) {
         final txid = state.pathParameters['txid'] ?? '';
-        return PlaceholderPage(title: 'Transaction $txid');
+        return TransactionDetailPage(txid: txid);
       },
     ),
 

bdk_demo/lib/core/utils/formatters.dart

@@ -32,8 +32,8 @@ abstract final class Formatters {
     return '$month ${dt.day} ${dt.year} $hour:$minute';
   }
 
-  static String abbreviateTxid(String txid) => txid.length > 16
-      ? '${txid.substring(0, 8)}...${txid.substring(txid.length - 8)}'
+  static String abbreviateTxid(String txid) => txid.length > 10
+      ? '${txid.substring(0, 6)}...${txid.substring(txid.length - 4)}'
       : txid;
 }