d793afaba6
The Xueqiu stock API requires a login session token (xq_a_token) that is generated by Xueqiu's frontend JavaScript and cannot be obtained by simply visiting the homepage. This caused persistent HTTP 400 (error code 400016) for all users. Changes: - _ensure_cookies(): add three-level priority — config file (saved by --from-browser) → live Chrome cookies via browser_cookie3 → homepage fallback. The homepage-only approach only ever got acw_tc (anti-DDoS token), never xq_a_token. - _get_json(): switch User-Agent from "agent-reach/1.0" to a real Chrome UA, and add Referer: https://xueqiu.com/ to all API requests. - get_hot_posts(): replace the defunct /statuses/hot/listV3.json endpoint (returns empty body) with the v4 public timeline endpoint; correctly parse item.data as a JSON string to extract author, text, and likes. - cookie_extract.py: add Xueqiu to PLATFORM_SPECS and configure_from_browser so that `agent-reach configure --from-browser chrome` now also saves Xueqiu cookies (only when xq_a_token is present). - check(): improve error message to direct users to --from-browser instead of suggesting a proxy. - Fix urllib.parse.quote usage (was using urllib.request.quote). - Update tier and backends description to reflect cookie requirement. - Add 2 new tests: cookie loading from config, Referer/UA header verification. - Update docs: README, install guide, troubleshooting, SKILL.md, CHANGELOG.