feat: type selector overhaul, fuzzy search, address parser, value tracking

Redesign type selector popup with fuzzy subsequence matching, per-category
icons, field summary tooltips, compact chips, and pointer target primitives.
Add address expression parser with arithmetic and register support.
Enable track value changes by default.

src/typeselectorpopup.h

@@ -3,6 +3,7 @@
 #include <QFont>
 #include <QVector>
 #include <QString>
+#include <QStringList>
 #include <cstdint>
 #include "core.h"
 
@@ -26,13 +27,19 @@ enum class TypePopupMode { Root, FieldType, ArrayElement, PointerTarget };
 
 struct TypeEntry {
     enum Kind { Primitive, Composite, Section };
+    enum Category { CatPrimitive, CatType, CatEnum };
 
     Kind        entryKind     = Primitive;
+    Category    category      = CatPrimitive;
     NodeKind    primitiveKind = NodeKind::Hex8;  // valid when entryKind==Primitive
     uint64_t    structId      = 0;               // valid when entryKind==Composite
     QString     displayName;
     QString     classKeyword;                    // "struct", "class", "enum" (Composite only)
     bool        enabled       = true;            // false = grayed out (visible but not selectable)
+    int         sizeBytes     = 0;               // size in bytes (for display)
+    int         alignment     = 0;               // natural alignment in bytes
+    int         fieldCount    = 0;               // child field count (composite only)
+    QStringList fieldSummary;                     // first ~6 fields: "0x00: float x"
 };
 
 // ── Parsed type spec (shared between popup filter and inline edit) ──
@@ -58,16 +65,21 @@ public:
     void setMode(TypePopupMode mode);
     void applyTheme(const Theme& theme);
     void setCurrentNodeSize(int bytes);
+    void setPointerSize(int bytes);
     void setModifier(int modId, int arrayCount = 0);
     void setTypes(const QVector<TypeEntry>& types, const TypeEntry* current = nullptr);
     void popup(const QPoint& globalPos);
 
+    /// Show popup instantly with skeleton placeholders; call setTypes() to fill content.
+    void popupLoading(const QPoint& globalPos);
+
     /// Force native window creation to avoid cold-start delay.
     void warmUp();
 
 signals:
     void typeSelected(const TypeEntry& entry, const QString& fullText);
     void createNewTypeRequested();
+    void saveRequested();
     void dismissed();
 
 protected:
@@ -78,27 +90,35 @@ private:
     QLabel*           m_titleLabel   = nullptr;
     QToolButton*      m_escLabel     = nullptr;
     QToolButton*      m_createBtn    = nullptr;
+    QToolButton*      m_saveBtn      = nullptr;
     QLineEdit*        m_filterEdit   = nullptr;
-    QLabel*           m_previewLabel = nullptr;
     QListView*        m_listView     = nullptr;
     QStringListModel* m_model        = nullptr;
-    QFrame*           m_separator    = nullptr;
 
     // Modifier toggles
     QWidget*          m_modRow       = nullptr;
-    QToolButton*      m_btnPlain     = nullptr;
     QToolButton*      m_btnPtr       = nullptr;
     QToolButton*      m_btnDblPtr    = nullptr;
     QToolButton*      m_btnArray     = nullptr;
     QLineEdit*        m_arrayCountEdit = nullptr;
     QButtonGroup*     m_modGroup     = nullptr;
 
+    // Category filter checkboxes
+    QWidget*          m_chipRow      = nullptr;
+    QToolButton*      m_chipPrim     = nullptr;
+    QToolButton*      m_chipTypes    = nullptr;
+    QToolButton*      m_chipEnums    = nullptr;
+    QLabel*           m_statusLabel  = nullptr;
+
     QVector<TypeEntry> m_allTypes;
     QVector<TypeEntry> m_filteredTypes;
+    QVector<QVector<int>> m_matchPositions;
     TypeEntry          m_currentEntry;
     bool               m_hasCurrent = false;
     TypePopupMode      m_mode = TypePopupMode::FieldType;
     int                m_currentNodeSize = 0;
+    int                m_pointerSize = 8;
+    bool               m_loading = false;
     QFont              m_font;
 
     void applyFilter(const QString& text);