chore: vendor swabble and add speech usage strings

Swabble/Sources/swabble/Commands/StartStopCommands.swift

@@ -0,0 +1,35 @@
+import Commander
+import Foundation
+
+@MainActor
+struct StartCommand: ParsableCommand {
+    static var commandDescription: CommandDescription {
+        CommandDescription(commandName: "start", abstract: "Start swabble (foreground placeholder)")
+    }
+
+    mutating func run() async throws {
+        print("start: launchd helper not implemented; run 'swabble serve' instead")
+    }
+}
+
+@MainActor
+struct StopCommand: ParsableCommand {
+    static var commandDescription: CommandDescription {
+        CommandDescription(commandName: "stop", abstract: "Stop swabble (placeholder)")
+    }
+
+    mutating func run() async throws {
+        print("stop: launchd helper not implemented yet")
+    }
+}
+
+@MainActor
+struct RestartCommand: ParsableCommand {
+    static var commandDescription: CommandDescription {
+        CommandDescription(commandName: "restart", abstract: "Restart swabble (placeholder)")
+    }
+
+    mutating func run() async throws {
+        print("restart: launchd helper not implemented yet")
+    }
+}