fix: keep the rules banner true after Apply, delete and copy

The dialog stays open after Apply, so a refusal from a failed attempt and
the load warnings about a file Apply has just rewritten both outlived what
they described. A successful Apply rereads the file and redraws the
banner. Deleting the last rule now disables Apply, and copying or
deleting a rule re-checks which rules the sync hook will skip.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2 files changed, 26 insertions, 0 deletions

diff --git a/src/tagrulesdialog.cpp b/src/tagrulesdialog.cpp
index 5f503ea..eb3154f 100644
--- a/src/tagrulesdialog.cpp
+++ b/src/tagrulesdialog.cpp
@@ -662,6 +662,9 @@ void TagRulesDialog::reloadList()
 
     if (!m_working.isEmpty())
         m_list->setCurrentItem(m_list->topLevelItem(0));
+    // Here as well as on selection: with no rule left, nothing is selected
+    // and onSelectionChanged() never runs to disable it.
+    updateApplyButton();
 }
 
 int TagRulesDialog::currentIndex() const
@@ -776,7 +779,11 @@ void TagRulesDialog::applyEditsToCurrentRule()
 
     fillItem(m_list->topLevelItem(index), rule);
     updateApplyButton();
+    refreshSkipWarning();
+}
 
+void TagRulesDialog::refreshSkipWarning()
+{
     if (hookSkipWarning() != m_lastSkipWarning)
         showWarnings();
 }
@@ -837,6 +844,7 @@ void TagRulesDialog::onCopyRule()
     m_working.insert(index + 1, copy);
     reloadList();
     m_list->setCurrentItem(m_list->topLevelItem(index + 1));
+    refreshSkipWarning();
 }
 
 void TagRulesDialog::onDeleteRule()
@@ -846,6 +854,7 @@ void TagRulesDialog::onDeleteRule()
         return;
     m_working.removeAt(index);
     reloadList();
+    refreshSkipWarning();
 }
 
 QStringList TagRulesDialog::countQueries() const
@@ -915,12 +924,22 @@ void TagRulesDialog::onApply()
     // The dialog stays open; only OK closes it.
     if (!saveRules())
         return;
+    // The dialog stays open, so the banner must stop describing a file that
+    // has just been rewritten: rereading it clears the load warnings, and
+    // showWarnings() replaces any refusal from an earlier attempt.
+    m_rules.load();
+    showWarnings();
     const int index = currentIndex();
     if (index < 0 || index >= m_working.size())
         return;
     emit applyRequested(m_working.at(index));
 }
 
+bool TagRulesDialog::applyEnabledForTest() const
+{
+    return m_applyButton->isEnabled();
+}
+
 void TagRulesDialog::setArchiveForTest(bool on)
 {
     m_archive->setChecked(on);   // toggled -> applyEditsToCurrentRule
diff --git a/src/tagrulesdialog.h b/src/tagrulesdialog.h
index b43e79a..1c0ae45 100644
--- a/src/tagrulesdialog.h
+++ b/src/tagrulesdialog.h
@@ -98,6 +98,9 @@ public:
     void applyForTest() { onApply(); }
     /// Ticks or clears the archive box, as a click would.
     void setArchiveForTest(bool on);
+    bool applyEnabledForTest() const;
+    void copyRuleForTest() { onCopyRule(); }
+    void deleteRuleForTest() { onDeleteRule(); }
 
     /// Types into the query field and toggles the mode, so the refusal path
     /// can be reached without a synthetic click. The refusal reports through
@@ -242,6 +245,10 @@ private:
     /// Enables Apply only for a rule worth applying.
     void updateApplyButton();
 
+    /// Re-renders the banner when the skip sentence changed. Not called from
+    /// reloadList(), which runs once before the constructor's showWarnings().
+    void refreshSkipWarning();
+
     /// The only way the warning label is written. An empty string hides it.
     /// One route in so the icon and the red styling cannot drift between the
     /// load path, the save refusal and the text-mode notice.