renderReminders: re-indent body inside paintAtomic callback

argus 🟡 nit on #480 — the `if (!rows.length)` block sat at +6
inside the paintAtomic callback, but the `const ul` + for loop
underneath stayed at the pre-wrap +4. Code was correct, just
visually inconsistent. Re-indented the whole callback body
uniformly.

renderScheduleNewForm has the same cosmetic mis-indent but its
body is ~100 lines; leaving that for a separate sweep so the
diff stays focused.

frontend/packages/dashboard/src/app.js

@@ -1934,7 +1934,7 @@ window.marked = marked;
         ul.append(li);
       }
       root.append(ul);
-    });  // paintAtomic
+    });
   }
   function fmtDuration(secs) {
     if (secs < 60) return secs + 's';