feat: choose the startup query by namefeature/ui-state-persistence

The app opened whichever saved query sorted first alphabetically, which
is not a choice anyone made: [queries] is read through childKeys(), so
savedQueries().first() means "Flagged" before "Inbox" before "Unread"
rather than anything the user expressed.

[general] startup_query names the entry to open and defaults to Unread,
so a fresh install comes up on the unified unread list. Saved-query
button order is untouched and stays alphabetical.

A name matching no saved query falls back to the first one rather than
starting with an empty view. That is reported as a problem only when the
user actually wrote the name; the built-in default naming a query they
never created is not something they got wrong, and warning about it
would fire on every launch of a config that has no Unread entry.

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

1 files changed, 18 insertions, 0 deletions

diff --git a/src/config.h b/src/config.h
index 3e94249..3b7fc48 100644
--- a/src/config.h
+++ b/src/config.h
@@ -78,6 +78,18 @@ public:
     /// Optional alternate notmuch config file. Empty means "let notmuch decide".
     QString notmuchConfig() const { return m_notmuchConfig; }
 
+    /// The saved query to open at startup, by name. Falls back to "Unread"
+    /// when unset, and to the first saved query when no query by that name
+    /// exists: [queries] is read through childKeys(), which sorts
+    /// alphabetically, so "first" would otherwise mean whatever happens to
+    /// sort first rather than anything the user chose.
+    QString startupQuery() const { return m_startupQuery; }
+
+    /// The saved query startupQuery() names, or the first one when it names
+    /// nothing that exists. A default-constructed SavedQuery when there are
+    /// none at all.
+    SavedQuery startupSavedQuery() const;
+
     /// Starting message-pane zoom for a profile with no saved UI state. Once
     /// the user zooms, the state file remembers that instead, so this is only
     /// ever the default. Clamped by MessageView::clampZoom() on use.
@@ -107,6 +119,12 @@ private:
     QString m_syncCommand;
     QString m_notmuchConfig;
     qreal m_messageZoom = 1.0;
+    QString m_startupQuery = QStringLiteral("Unread");
+
+    /// Whether startup_query came from the config rather than being the
+    /// built-in default. Only a name the user wrote is worth reporting when
+    /// it matches no saved query.
+    bool m_startupQueryWasSet = false;
     QStringList m_warnings;
     QStringList m_problems;
 };