feat(api,userbot,frontend): add accounts from the web ui and isolate per-account settings

frontend/src/lib/components/jobs/JobList.svelte

@@ -3,6 +3,7 @@
   import type { JobStatus, JobView } from "$lib/api/types";
   import Spinner from "$lib/components/ui/Spinner.svelte";
   import { formatFull } from "$lib/format/datetime";
+  import { accounts } from "$lib/stores/accounts.svelte";
   import { toasts } from "$lib/stores/toasts.svelte";
 
   interface Props {
@@ -93,7 +94,7 @@
   }
 
   $effect(() => {
-    if (version >= 0) {
+    if (version >= 0 && accounts.selectedId !== null) {
       load().catch(() => {
         loading = false;
       });