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.

tests/example/orm/users_test.cpp

@@ -0,0 +1,24 @@
+// Route: /orm/users  (dual backends, auto-sync self-healing)
+#include "support/Assert.hpp"
+
+using namespace molo::example::test;
+
+int main() {
+  Fixture f;
+  auto first = f.client->get("/orm/users?backend=sqlite");
+  check(first.status == 200, "sqlite status 200");
+  check(contains(first.body, "\"healed\":true"), "table auto-created");
+  auto insert = f.client->post("/orm/users?backend=sqlite",
+                               "{\"name\":\"ada\"}", "application/json");
+  check(insert.status == 201, "insert status 201");
+  auto widen = f.client->post("/orm/users?backend=sqlite",
+                              "{\"name\":\"g\",\"email\":\"g@x.io\"}",
+                              "application/json");
+  check(contains(widen.body, "auto-added column email"),
+        "new column self-healed");
+  auto pg = f.client->get("/orm/users?backend=postgres");
+  check(contains(pg.body, "\"backend\":\"postgres\""),
+        "postgres backend selected");
+  check(!f.services.sqlite->tables().empty(), "side effect: table exists");
+  return finish("orm/users");
+}