All skills now share a single Chrome profile at: - macOS: ~/Library/Application Support/baoyu-skills/chrome-profile - Linux: $XDG_DATA_HOME/baoyu-skills/chrome-profile - Env override: BAOYU_CHROME_PROFILE_DIR Fixes baoyu-post-to-weibo incorrectly reusing x-browser-profile. Legacy per-skill env vars retained as fallback.