Refactor large headers and enforce architecture constraints

editor/src/state/NullLSPTransport.h

@@ -0,0 +1,8 @@
+#pragma once
+
+struct NullLSPTransport : public LSPTransport {
+    void send(const std::string& msg) override { (void)msg; }
+    bool receive(std::string& out) override { (void)out; return false; }
+    bool isOpen() const override { return false; }
+    void close() override {}
+};