feat: 32-bit process support, scanner rescan filtering, suppress flash on navigate

- Add pointerSize() to Provider base; WoW64/ELF detection in ProcessMemory,
  WinDbg, and RemoteProcessMemory plugins
- Wire pointer size through NodeTree, source/XML imports, C++ generator,
  controller, compose, address parser, and RPC protocol header
- Add is32Bit to PluginProcessInfo and ProcessInfo; show (32-bit) in picker
- Scanner rescan now filters results against the current input value
- Go-to-address from scanner resets change tracking to prevent false flashing

src/imports/import_reclass_xml.h

@@ -5,7 +5,9 @@ namespace rcx {
 
 // Import a ReClass XML file (.reclass, .MemeCls, etc.) into a NodeTree.
 // Supports ReClassEx, MemeClsEx, ReClass 2011/2013/2016 XML formats.
+// pointerSize: 4 for 32-bit targets, 8 for 64-bit (default).
 // Returns an empty NodeTree on failure; populates errorMsg if non-null.
-NodeTree importReclassXml(const QString& filePath, QString* errorMsg = nullptr);
+NodeTree importReclassXml(const QString& filePath, QString* errorMsg = nullptr,
+                          int pointerSize = 8);
 
 } // namespace rcx