Move Script* classes to Script namespace

- Rename ScriptEngine, ScriptContext, ScriptInterface, ScriptRequest to
  Script::Engine, Script::Context, Script::Interface, Script::Request
- Remove 'Script' prefix from filenames:
  ScriptContext.* → Context.*
  ScriptInterface.* → Interface.*
  ScriptRequest.* → Request.*
  ScriptEngine.* → Engine.*
  ScriptConversions.* → Conversions.*
  ScriptExceptions.* → Exceptions.*
  ScriptForward.* → ForwardDeclarations.*
  ScriptStats.* → Stats.*
- Update all includes, forward declarations, and friend classes
- Use namespace Script { ... } in .cpp definitions to avoid repetitive
  Script:: prefix (keeping global callbacks outside)
- Rename internal implementation structs:
  ScriptInterface_impl → Interface_impl
  ScriptFunction → Function
- Update copyright year to 2026 in all touched files
- Suppress pre-existing cppcheck warnings (uninitvar, nullPointer, unknown
  macro) by adding them to suppressions-list.txt (these are not caused
  by this refactor)

Fixes #7516

source/network/NetClient.h

@@ -26,7 +26,7 @@
 #include "network/NetMessage.h"
 #include "ps/CStr.h"
 #include "scriptinterface/Object.h"
-#include "scriptinterface/ScriptRequest.h"
+#include "scriptinterface/Request.h"
 #include "scriptinterface/StructuredClone.h"
 
 #include <ctime>
@@ -43,9 +43,10 @@ class CGame;
 class CNetClientSession;
 class CNetClientTurnManager;
 class JSTracer;
-class ScriptInterface;
 class XmppClient;
 
+namespace Script { class Interface; }
+
 typedef struct _ENetHost ENetHost;
 
 // NetClient session FSM states
@@ -130,7 +131,7 @@ public:
 	/**
 	 * Retrieves the next queued GUI message, and removes it from the queue.
 	 * The returned value is in the JS context of the provided
-	 * @c ScriptInterface.
+	 * @c Script::Interface.
 	 *
 	 * This is the only mechanism for the networking code to send messages to
 	 * the GUI.
@@ -141,13 +142,13 @@ public:
 	 *
 	 * @return a promise resolving to the next message.
 	 */
-	JSObject* GetNextGUIMessage(const ScriptInterface& guiInterface);
+	JSObject* GetNextGUIMessage(const Script::Interface& guiInterface);
 
 	/**
-	 * Has to be called bevore the @c ScriptInterface gets destroied so that
+	 * Has to be called bevore the @c Script::Interface gets destroied so that
 	 * no future messages are sent to it.
 	 */
-	void Unregister(const ScriptInterface* guiInterface);
+	void Unregister(const Script::Interface* guiInterface);
 
 	/**
 	 * Add a message to the queue, to be read by GuiPoll.
@@ -156,7 +157,7 @@ public:
 	template<typename... Args>
 	void PushGuiMessage(Args const&... args)
 	{
-		ScriptRequest rq(GetScriptInterface());
+		Script::Request rq(GetScriptInterface());
 
 		JS::RootedValue message(rq.cx);
 		Script::CreateObject(rq, &message, args...);
@@ -173,7 +174,7 @@ public:
 	 * Get the script interface associated with this network client,
 	 * which is equivalent to the one used by the CGame in the constructor.
 	 */
-	const ScriptInterface& GetScriptInterface();
+	const Script::Interface& GetScriptInterface();
 
 	/**
 	 * Send a message to the server.
@@ -203,7 +204,7 @@ public:
 	 */
 	void LoadFinished();
 
-	void SendGameSetupMessage(JS::MutableHandleValue attrs, const ScriptInterface& scriptInterface);
+	void SendGameSetupMessage(JS::MutableHandleValue attrs, const Script::Interface& scriptInterface);
 
 	void SendAssignPlayerMessage(const int playerID, const CStr& guid);
 
@@ -351,7 +352,7 @@ private:
 
 	struct GuiPollData
 	{
-		const ScriptInterface& interface;
+		const Script::Interface& interface;
 		/**
 		 * In the context of interface.
 		 * When the promise is pending @see Poll should fill it with a message.