Add app source and tests

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

lib/Peach/see/deploy/single/ConnectDeploy.dart

@@ -0,0 +1,33 @@
+import 'dart:typed_data';
+
+import '../../../comms/Comms.dart' show DeployResult;
+
+abstract class ConnectDeploy {
+  /// nginx's configured roots, used to warn when a web service deploys
+  /// somewhere nginx isn't serving.
+  void onNginxRootsLoaded(List<String> roots);
+
+  /// A jar / binary is staged and ready to ship.
+  void onJarStaged(Uint8List bytes, String name, String source);
+
+  /// A built site directory is staged and ready to ship.
+  void onWebStaged(String directory, String source);
+
+  /// A local build finished; [message] explains a failure.
+  void onBuildFailed(String message);
+
+  /// Packaging a web build began (it can take a while on big sites).
+  void onPackagingStarted();
+
+  /// The deploy finished, successfully or not.
+  void onDeployFinished(DeployResult result);
+
+  /// A revert finished.
+  void onRevertFinished(DeployResult result);
+
+  /// The kept-backup was discarded.
+  void onBackupDiscarded();
+
+  /// Live tail started or stopped.
+  void onFollowChanged(bool following);
+}