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/app/RoutingDemo.cpp

@@ -0,0 +1,80 @@
+#include "App.hpp"
+
+#include "../fw/Router.hpp"
+#include "../fw/View.hpp"
+
+namespace molo::example::app {
+
+namespace {
+
+class GreetView : public fw::View {
+ public:
+  using fw::View::View;
+
+  fw::Response get() override {
+    return fw::JsonResponse(
+        "{\"view\":\"GreetView\",\"method\":\"GET\",\"name\":\"" +
+            fw::json_escape(req_.query_or("name", "stranger")) + "\"}",
+        200);
+  }
+
+  fw::Response post() override {
+    auto form = fw::parse_form(req_.body);
+    auto it = form.find("name");
+    std::string name = it == form.end() ? "stranger" : it->second;
+    return fw::JsonResponse(
+        "{\"view\":\"GreetView\",\"method\":\"POST\",\"name\":\"" +
+            fw::json_escape(name) + "\"}",
+        200);
+  }
+};
+
+}  // namespace
+
+void register_routing_demo(fw::Router& router, Services& services) {
+  (void)services;
+  router.get("/hello/{name}", "hello", [](fw::Request req) {
+    return fw::JsonResponse(
+        "{\"hello\":\"" + fw::json_escape(req.param_or("name", "")) + "\"}",
+        200);
+  });
+
+  fw::Router views;
+  views.get("/greet", "greet", [](fw::Request req) {
+    GreetView view(std::move(req));
+    return view.dispatch();
+  });
+  views.post("/greet", "greet-post", [](fw::Request req) {
+    GreetView view(std::move(req));
+    return view.dispatch();
+  });
+  router.include_router("/views", views, "views.");
+
+  fw::Router nested;
+  nested.get("/deep", "deep", [](fw::Request req) {
+    (void)req;
+    return fw::JsonResponse("{\"nested\":true}", 200);
+  });
+  fw::Router middle;
+  middle.include_router("/nested", nested, "nested.");
+  router.include_router("/routers", middle, "routers.");
+}
+
+void register_chain_demo(std::shared_ptr<fw::Application> app,
+                         Services& services) {
+  (void)services;
+  auto leaf = std::make_shared<fw::Application>();
+  fw::Router r;
+  r.get("/whoami", "whoami", [](fw::Request req) {
+    (void)req;
+    return fw::JsonResponse("{\"depth\":3,\"path\":\"/app1/app1/app1\"}", 200);
+  });
+  leaf->include_router("", r);
+  auto mid = std::make_shared<fw::Application>();
+  mid->mount("/app1", leaf);
+  auto top = std::make_shared<fw::Application>();
+  top->mount("/app1", mid);
+  app->mount("/app1", top);
+}
+
+}  // namespace molo::example::app