Add app source and tests

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

lib/Peach/see/server/detail/ConnectServerDetail.dart

@@ -0,0 +1,10 @@
+import '../../../about/internal/application/DeploymentRecord.dart';
+import '../../../about/internal/application/ServerProfile.dart';
+
+abstract class ConnectServerDetail {
+  /// The stored copy of this server, re-read after any change.
+  void onServerLoaded(ServerProfile server, List<DeploymentRecord> history);
+
+  /// The server (and its stored password) was removed.
+  void onServerDeleted();
+}