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/fw/StaticFiles.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+// Static file serving from disk or from embedded C++ assets, with path
+// traversal protection, ETags, and cache-control headers.
+// Gap: real static serving in 01-runtime.md owns ranges, conditional
+// requests, and directory indexing; the embedder CLI lives in 09-cli-ops.md.
+
+#include <map>
+#include <string>
+
+#include "Http.hpp"
+
+namespace molo::example::fw {
+
+bool path_is_safe(const std::string& request_path);
+
+Response serve_disk_file(const std::string& root, const std::string& subpath);
+
+Response serve_embedded(const std::map<std::string, std::string>& assets,
+                        const std::string& subpath);
+
+std::string etag_for(const std::string& body);
+
+}  // namespace molo::example::fw