feat: keep what was loaded between runs, and start where you left off

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/store/store.go

@@ -69,6 +69,33 @@ func (s *Store) SetUpdateCheck(c UpdateCheck) error {
 	return s.save(func(d *file) { d.Update = c })
 }
 
+// Place is where lazysecrets was left when it last ran in dir.
+func (s *Store) Place(dir string) (Place, bool) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	p, ok := s.data.Places[dir]
+	return p, ok
+}
+
+// SetPlace remembers where lazysecrets was left in dir.
+func (s *Store) SetPlace(dir string, p Place) error {
+	return s.save(func(d *file) {
+		if d.Places == nil {
+			d.Places = map[string]Place{}
+		}
+		d.Places[dir] = p
+		for len(d.Places) > maxPlaces {
+			oldest := ""
+			for k, v := range d.Places {
+				if oldest == "" || v.At.Before(d.Places[oldest].At) {
+					oldest = k
+				}
+			}
+			delete(d.Places, oldest)
+		}
+	})
+}
+
 // Layout is the user's pane sizing, as offsets from the default layout so
 // it adapts to the terminal size.
 type Layout struct {
@@ -84,8 +111,22 @@ type file struct {
 	Flags map[string]bool `json:"flags,omitempty"`
 	// Update is the last check for a newer release.
 	Update UpdateCheck `json:"update,omitzero"`
+	// Places is where lazysecrets was left, by the folder it ran in.
+	Places map[string]Place `json:"places,omitempty"`
 }
 
+// Place is what was selected when lazysecrets quit: an item's link, and
+// the account and source it was read through.
+type Place struct {
+	Link    string    `json:"link"`
+	Account string    `json:"account"`
+	Source  string    `json:"source"`
+	At      time.Time `json:"at"`
+}
+
+// maxPlaces bounds Places: the folders used most recently are kept.
+const maxPlaces = 100
+
 // UpdateCheck is the last look for a newer release: when, and what the
 // latest was (its tag, changelog and page), so the next start within a
 // day shows it without asking again.