feat(transactions): notes folded under rows, i shows them all

src/lib/ui.svelte.ts

@@ -1,14 +1,24 @@
 const SIDEBAR_KEY = "ffui.sidebar.collapsed";
+const NOTES_KEY = "ffui.notes.shown";
+
+function stored(key: string): boolean {
+  return (
+    typeof localStorage !== "undefined" && localStorage.getItem(key) === "1"
+  );
+}
 
 class Ui {
   palette = $state(false);
   paletteQuery = $state("");
   quickEntry = $state(false);
   mobileNav = $state(false);
-  collapsed = $state(
-    typeof localStorage !== "undefined" &&
-      localStorage.getItem(SIDEBAR_KEY) === "1"
-  );
+  collapsed = $state(stored(SIDEBAR_KEY));
+  notes = $state(stored(NOTES_KEY));
+
+  toggleNotes() {
+    this.notes = !this.notes;
+    localStorage.setItem(NOTES_KEY, this.notes ? "1" : "0");
+  }
 
   openPalette(query = "") {
     this.paletteQuery = query;