Add app source and tests

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

lib/Peach/memory/ConnectInternalMemory.dart

@@ -0,0 +1,24 @@
+import '../about/internal/application/DeploymentRecord.dart';
+import '../about/internal/application/ServerProfile.dart';
+
+/// Everything Peach persists on this device. Server profiles and their nested
+/// services live here; passwords are held separately in the OS keystore and
+/// hydrated onto the profiles on read, so a caller never handles the two
+/// stores independently.
+abstract class ConnectInternalMemory {
+  Future<List<ServerProfile>> getServers();
+
+  Future setServers(List<ServerProfile> servers);
+
+  Future deleteServerSecret(String serverId);
+
+  Future<List<DeploymentRecord>> getDeployments();
+
+  Future<List<DeploymentRecord>> addDeployment(DeploymentRecord record);
+
+  Future clearDeployments();
+
+  Future<String> getThemeMode();
+
+  Future setThemeMode(String mode);
+}