Add bot schedules (routines), open Activity, add Help and a Desktop computer view

Bots create, list, update and delete schedules (cron_jobs, Bun.cron in UTC);
a per-minute cron queues due runs as tasks. Routines, Activity (super admins)
and Help get their own rail aside. Help covers familiar problems, starting
with signing in to Google through Cookie-Editor over the new Desktop (noVNC)
view.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/functions/backend/db/cron-jobs/grab-user-cron-job.ts

@@ -0,0 +1,24 @@
+import AppError from "@/src/utils/app-error";
+import grabCronJobs from "./grab-cron-jobs";
+
+type Params = {
+    user_id: number | string;
+    cron_job_id: number | string;
+    /**
+     * Only if it's this bot's (a bot managing its own schedules).
+     */
+    bot_id?: number | string;
+};
+
+/**
+ * One of the user's schedules. Throws when it isn't theirs (or the bot's).
+ */
+export default async function grabUserCronJob({ user_id, cron_job_id, bot_id }: Params) {
+    const [cron_job] = await grabCronJobs({ user_id, bot_id, cron_job_id });
+
+    if (!cron_job?.id) {
+        throw new AppError(`Schedule #${cron_job_id} not found.`);
+    }
+
+    return cron_job;
+}