feat(search): push the query bar's emptiness into the panes

The menus cannot read the query bar and must not. MainWindow already
watched textChanged for the Save button; the same lambda now also tells
MessageView, which passes it to the details dialog at construction,
where it cannot go stale.

Nothing consumes it yet.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/messagedetailsdialog.cpp b/src/messagedetailsdialog.cpp
index e487270..e862fce 100644
--- a/src/messagedetailsdialog.cpp
+++ b/src/messagedetailsdialog.cpp
@@ -30,8 +30,8 @@
 #include "searchterm.h"
 
 MessageDetailsDialog::MessageDetailsDialog(const QList<ThreadRenderItem> &items,
-                                           QWidget *parent)
-    : QDialog(parent)
+                                           bool hasQuery, QWidget *parent)
+    : QDialog(parent), m_hasQuery(hasQuery)
 {
     setWindowTitle(tr("Message details"));
     setObjectName(QStringLiteral("messageDetailsDialog"));