Add app source and tests

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

lib/Peach/memory/ConfigStore.dart

@@ -0,0 +1,52 @@
+import 'dart:convert';
+import 'package:shared_preferences/shared_preferences.dart';
+import '../about/internal/application/ServerProfile.dart';
+import 'SecretStore.dart';
+
+/// Persists server profiles (with their nested services) locally. Non-secret
+/// data goes to shared_preferences; passwords go to encrypted [SecretStore].
+class ConfigStore {
+  static const _key = 'peach.servers.v2';
+
+  /// The key used before the app was renamed. Read once and migrated forward,
+  /// so an existing install keeps its servers.
+  static const _legacyKey = 'jarpilot.servers.v2';
+
+  final _secrets = SecretStore();
+
+  Future<List<ServerProfile>> load() async {
+    final prefs = await SharedPreferences.getInstance();
+    var raw = prefs.getString(_key);
+    if (raw == null || raw.isEmpty) {
+      raw = prefs.getString(_legacyKey);
+      if (raw != null && raw.isNotEmpty) {
+        await prefs.setString(_key, raw);
+        await prefs.remove(_legacyKey);
+      }
+    }
+    if (raw == null || raw.isEmpty) return [];
+    final list = jsonDecode(raw) as List<dynamic>;
+    final servers = list
+        .map((e) => ServerProfile.fromJson(e as Map<String, dynamic>))
+        .toList();
+    // Hydrate passwords from encrypted storage.
+    for (final s in servers) {
+      s.password = await _secrets.readPassword(s.id) ?? '';
+    }
+    return servers;
+  }
+
+  Future<void> save(List<ServerProfile> servers) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(
+      _key,
+      jsonEncode(servers.map((s) => s.toJson()).toList()),
+    );
+    for (final s in servers) {
+      await _secrets.writePassword(s.id, s.password);
+    }
+  }
+
+  Future<void> deleteSecret(String serverId) =>
+      _secrets.deletePassword(serverId);
+}