feat: fix heatmap false-heat on offset shift, hover flicker, type chooser cleanup

- Clear value history when node offsets change (insert/delete/resize/
  manual offset edit) so stale values from old addresses don't show
  false heat coloring
- Invalidate in-flight async reads (bump refreshGen) when tree layout
  changes, preventing stale snapshot data from re-introducing heat
- Fix command bar hover cursor flicker: remove premature
  applyHoverCursor() from applyDocument() — runs correctly via
  applySelectionOverlays() after text is finalized
- Fix hover indicator survival: reorder refresh() so text-modifying
  passes (updateCommandRow) run before overlay passes
- Guard synthetic Leave events during setText() to preserve hover state
- Remove primitives from type chooser when pointer modifier (* / **)
  is active; remove primitives entirely in Root command bar mode
- Add test_editor and test_controller test coverage for heat clearing,
  hover survival, and mixed hex/non-hex type scenarios

tests/test_options_dialog.cpp

@@ -8,6 +8,7 @@
 #include <QPushButton>
 #include <QGroupBox>
 #include <QLineEdit>
+#include <QSpinBox>
 #include <QLabel>
 #include "optionsdialog.h"
 #include "themes/thememanager.h"
@@ -222,6 +223,45 @@ private slots:
         QVERIFY(!aiItem->isHidden());
     }
 
+    void refreshRateSpinBoxExists() {
+        OptionsResult defaults;
+        defaults.refreshMs = 660;
+        OptionsDialog dlg(defaults);
+
+        auto* spin = dlg.findChild<QSpinBox*>("refreshSpin");
+        QVERIFY(spin);
+        QCOMPARE(spin->value(), 660);
+        QCOMPARE(spin->minimum(), 1);
+        QCOMPARE(spin->maximum(), 60000);
+    }
+
+    void refreshRateResultReflectsInput() {
+        OptionsResult input;
+        input.refreshMs = 200;
+        OptionsDialog dlg(input);
+
+        auto r = dlg.result();
+        QCOMPARE(r.refreshMs, 200);
+
+        // Change via spin box
+        auto* spin = dlg.findChild<QSpinBox*>("refreshSpin");
+        QVERIFY(spin);
+        spin->setValue(100);
+        r = dlg.result();
+        QCOMPARE(r.refreshMs, 100);
+    }
+
+    void refreshRateClampsMin() {
+        OptionsResult input;
+        input.refreshMs = 0; // below minimum
+        OptionsDialog dlg(input);
+
+        auto* spin = dlg.findChild<QSpinBox*>("refreshSpin");
+        QVERIFY(spin);
+        // QSpinBox clamps to minimum
+        QCOMPARE(spin->value(), 1);
+    }
+
     void dialogInheritsPalette() {
         auto& tm = ThemeManager::instance();
         const auto& theme = tm.current();