feat: add Chinese academic & policy database adapters

[Muuuun]

Summary

• Add 7 new site adapters for Chinese academic databases and government policy/law databases
• Academic: baidu-scholar/search, wanfang/search, google-scholar/search
• Policy & Law: gov-law/search, gov-law/recent, gov-policy/search, gov-policy/recent

Details

Command	Strategy	Description
baidu-scholar search <query>	cookie + DOM	百度学术论文搜索 (title, authors, journal, year, citations)
wanfang search <query>	cookie + DOM	万方数据论文搜索 (title, authors, source, year, type, citations)
google-scholar search <query>	cookie + DOM	Google Scholar 学术搜索 (title, authors, source, year, citations)
gov-law search <query>	cookie + Vue Router	国家法律法规数据库搜索 (title, status, date, type, department)
gov-law recent	cookie + Vue Router	最新法律法规列表
gov-policy search <query>	cookie + DOM	中国政府网政策文件搜索 (title, description, date, url)
gov-policy recent	cookie + DOM	国务院最新政策文件

Notable techniques

• gov-law: The site is a Vue 3 SPA with Element UI. Search is triggered by programmatically navigating via Vue Router.push() with searchWord query param, after injecting the search term into the input via native value setter to trigger Vue's reactivity.
• gov-policy: Search URL discovered from inline JS source — sousuo.www.gov.cn/sousuo/search.shtml (not the obvious sousuo.gov.cn which doesn't resolve).
• wanfang: Uses obfuscated CSS class names but span.title, span.authors, span.essay-type remain stable selectors.

Test plan

• npx tsc --noEmit — type check passed
• npx vitest run src/ — 306 tests passed
• opencli validate — 86 CLI definitions validated, 0 errors
• Manual testing of all 7 commands with real data

🤖 Generated with Claude Code

[Astro-Han]

Great coverage of academic and government data sources — the gov-law Vue Router technique is clever. A few things I noticed:

gov-policy/recent.ts — missing navigateBefore: false

The other 6 adapters all set navigateBefore: false, but this one doesn't. With Strategy.COOKIE + domain, the framework will auto-navigate to www.gov.cn before func runs, then func navigates again to the target URL — double navigation adding 2-4s overhead.

Strategy — COOKIE vs PUBLIC

These sites all serve public data without requiring login. Strategy.COOKIE forces users to go through the browser extension flow, while Strategy.PUBLIC (with browser: true if DOM extraction is needed) would be lighter. See google/search.ts for a similar pattern.

baidu-scholar/search.ts:43 — duplicate condition

if (t.startsWith('《') || t.startsWith('《'))

Both sides are the same character (U+300A). The second branch is always redundant.

gov-law — Vue Router fallback

app.__vue_app__.config.globalProperties.$router is a Vue 3 internal — if the site upgrades or restructures, this silently returns nothing. A null guard with a descriptive CliError would help users understand why the command stopped working.

Tests & docs

No E2E tests or documentation updates (README, docs/adapters/, SKILL.md, vitepress sidebar). Per TESTING.md, browser commands should have entries in browser-public.test.ts (or browser-auth.test.ts).

[Astro-Han]

Thanks for addressing the feedback! Strategy, tests, duplicate condition, and Vue Router guard all look good now. LGTM from my side.

Minor remaining nits (non-blocking):

• gov-law/recent.ts and search.ts share ~15 lines of identical DOM extraction — could be a shared helper
• The 'no_router' return from evaluate is not consumed; the location.href check works but is indirect
• No doc updates (README, docs/adapters/, SKILL.md) — deferring to maintainer on whether that's needed in this PR