7f08d92958
Adds a new browser-fetch microservice that wraps Lightpanda for rendering JS-heavy pages, and wires it into the knowledge URL parser as a fallback when the upstream link reader returns 403/429/5xx for an allow-listed domain (e.g. zhuanlan.zhihu.com). Includes config/env plumbing, hot-reload diff support, and full deploy assets (Dockerfile target, docker-compose, k3s manifests, image-build/package scripts).