New /admin/crawler tab (5s-polled): status hero (daemon/session/browser
pills, phase line + progress bar, session-expired banner, last-pass),
controls (run pass, restart browser w/ confirm, manage session modal,
clear expired), queue gauges + worker table, and a dead-jobs table with
search, Pager, and per-job / per-manga / all requeue.
Adds inline "requeue" on failed chapters in the admin manga page, the
typed api-client functions in lib/api/admin.ts (+ tests), and the Crawler
nav tab. Version 0.52.0 -> 0.53.0.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
ec0a8f2b5d