Implement C++ daemon with CMake, Ninja build system

Created complete C++ implementation:
- Core library (client, errors, capabilities)
- Query engine (AST, builder, normalizer)
- Utilities (UUID generation, exponential backoff)
- SQLite adapter and connection pool
- Daemon server with security manager
- Unit, integration, and conformance tests

Build system:
- CMakeLists.txt with optional Conan dependencies
- Renamed build assistant to .cjs for ES module compatibility
- Fixed conanfile.txt format for Conan 2.x
- All tests passing, daemon runs successfully

Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>

dbal/cpp/src/capabilities.cpp

@@ -0,0 +1,35 @@
+#include <string>
+#include <vector>
+
+namespace dbal {
+
+// Capability detection for database features
+class Capabilities {
+public:
+    static std::vector<std::string> detect(const std::string& adapter) {
+        std::vector<std::string> caps;
+        
+        if (adapter == "sqlite") {
+            caps.push_back("crud");
+            caps.push_back("transactions");
+            caps.push_back("fulltext_search");
+        } else if (adapter == "prisma") {
+            caps.push_back("crud");
+            caps.push_back("transactions");
+            caps.push_back("relations");
+            caps.push_back("migrations");
+        }
+        
+        return caps;
+    }
+    
+    static bool supports(const std::string& adapter, const std::string& capability) {
+        auto caps = detect(adapter);
+        for (const auto& cap : caps) {
+            if (cap == capability) return true;
+        }
+        return false;
+    }
+};
+
+}