Quiet the logs and capture the errors that were missing

- Activity page: "Delete all" empties the open tab (api/admin/logs/clear-logs,
  super admin only, logged under system)
- Stop logging every WebSocket connect
- Log unexpected API errors (safeErrorMessage -> logUnexpectedError), every
  failed bot job attempt and every job the queue lost
- Drop the cron jobs' console output; a failed model sync goes to the logs

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

src/functions/backend/db/cron-jobs/fire-cron-job.ts

@@ -87,7 +87,7 @@ export default async function fireCronJob({ cron_job, now = Date.now() }: Params
             metadata: { cron_job_id: id, job_id, bot_id: cron_job.bot_id },
         });
     } catch (error) {
-        await saveRun({ id, last_error: safeErrorMessage({ error, fallback: `Couldn't queue the run.` }) });
+        await saveRun({ id, last_error: safeErrorMessage({ error, fallback: `Couldn't queue the run.`, log: false }) });
 
         await logError({
             title: `Schedule #${id} couldn't run`,