fix: clear value history clears subtree, add Copy Line and Search to context menu

- Clear Value History now removes history for all descendant nodes too
- Add "Copy Line" right-click menu item
- Add "Search..." right-click menu item (opens Ctrl+F find bar)
- Move showFindBar() to public in editor.h

src/controller.cpp

@@ -1637,9 +1637,11 @@ void RcxController::showContextMenu(RcxEditor* editor, int line, int nodeIdx,
             connect(act, &QAction::triggered, this, [this, ids]() {
                 for (uint64_t id : ids) {
                     m_valueHistory.remove(id);
-                    for (auto& lm : m_lastResult.meta)
+                    for (int ci : m_doc->tree.subtreeIndices(id))
-                        if (lm.nodeId == id) lm.heatLevel = 0;
+                        m_valueHistory.remove(m_doc->tree.nodes[ci].id);
                 }
+                for (auto& lm : m_lastResult.meta)
+                    if (!m_valueHistory.contains(lm.nodeId)) lm.heatLevel = 0;
                 refresh();
             });
         }
@@ -1833,11 +1835,12 @@ void RcxController::showContextMenu(RcxEditor* editor, int line, int nodeIdx,
         {
             auto* act = menu.addAction("Clear Value History");
             act->setToolTip(QStringLiteral("Reset change tracking for this node"));
-            act->setEnabled(m_valueHistory.contains(nodeId) && m_valueHistory[nodeId].uniqueCount() > 0);
             connect(act, &QAction::triggered, this, [this, nodeId]() {
                 m_valueHistory.remove(nodeId);
+                for (int ci : m_doc->tree.subtreeIndices(nodeId))
+                    m_valueHistory.remove(m_doc->tree.nodes[ci].id);
                 for (auto& lm : m_lastResult.meta)
-                    if (lm.nodeId == nodeId) lm.heatLevel = 0;
+                    if (!m_valueHistory.contains(lm.nodeId)) lm.heatLevel = 0;
                 refresh();
             });
         }
@@ -2091,6 +2094,23 @@ void RcxController::showContextMenu(RcxEditor* editor, int line, int nodeIdx,
     menu.addAction(icon("clippy.svg"), "Copy All as Text", [editor]() {
         QApplication::clipboard()->setText(editor->textWithMargins());
     });
+    menu.addAction(icon("clippy.svg"), "Copy Line", [editor, line]() {
+        auto* sci = editor->scintilla();
+        int len = (int)sci->SendScintilla(QsciScintillaBase::SCI_LINELENGTH, (unsigned long)line);
+        if (len > 0) {
+            QByteArray buf(len + 1, '\0');
+            sci->SendScintilla(QsciScintillaBase::SCI_GETLINE, (unsigned long)line, (void*)buf.data());
+            QString text = QString::fromUtf8(buf.data(), len).trimmed();
+            if (!text.isEmpty())
+                QApplication::clipboard()->setText(text);
+        }
+    });
+
+    menu.addSeparator();
+
+    menu.addAction(icon("search.svg"), "Search...", [editor]() {
+        editor->showFindBar();
+    });
 
     menu.exec(globalPos);
 }

src/editor.h

@@ -33,6 +33,7 @@ public:
     const LineMeta* metaForLine(int line) const;
     int currentNodeIndex() const;
     void scrollToNodeId(uint64_t nodeId);
+    void showFindBar();
 
     // ── Column span computation ──
     static ColumnSpan typeSpan(const LineMeta& lm, int typeW = kColType);
@@ -159,7 +160,6 @@ private:
     QWidget*   m_findBarContainer = nullptr;
     QLineEdit* m_findBar = nullptr;
     long       m_findPos = 0;
-    void showFindBar();
     void hideFindBar();
 
     // ── Reentrancy guards ──