feat: implement MoloApp plans 01-15 with integration

Full C++23 framework tree: runtime, observability, security,
data, app, realtime, supervisor, clients, CLI, example plus
enterprise tenancy, audit, operability, governance,
supplychain. Postgres via docker compose for tests.

example/main.cpp

@@ -0,0 +1,35 @@
+// Living example server entry: serves the demo app on loopback.
+// Usage: living-server [port]  (default 8080)
+
+#include <chrono>
+#include <iostream>
+#include <string>
+#include <thread>
+
+#include "app/App.hpp"
+#include "fw/Server.hpp"
+
+int main(int argc, char** argv) {
+  int port = 8080;
+  if (argc > 1) {
+    try {
+      port = std::stoi(argv[1]);
+    } catch (...) {
+      std::cerr << "bad port\n";
+      return 1;
+    }
+  }
+  molo::example::app::Services services;
+  auto app = molo::example::app::build_application(services);
+  molo::example::fw::Server server(app);
+  if (!server.start("127.0.0.1", port)) {
+    std::cerr << "bind failed\n";
+    return 1;
+  }
+  std::cout << "living example on http://127.0.0.1:" << server.port() << "\n";
+  std::cout << "press Ctrl-C to stop\n";
+  while (server.running()) {
+    std::this_thread::sleep_for(std::chrono::milliseconds(200));
+  }
+  return 0;
+}