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/controller.h

@@ -141,6 +141,7 @@ public:
     // Value tracking toggle (per-tab, off by default)
     bool trackValues() const { return m_trackValues; }
     void setTrackValues(bool on);
+    void resetChangeTracking();
 
     // Cross-tab type visibility: point at the project's full document list
     void setProjectDocuments(QVector<RcxDocument*>* docs) { m_projectDocs = docs; }