Add web-automation skill

- Browse and scrape web pages using Playwright with Camoufox anti-detection browser
- Supports automated web workflows, authenticated sessions, and bot protection bypass
- Includes scripts for browse, scrape, auth, and local app scanning
- Updated README with skill documentation and system library requirements

skills/web-automation/SKILL.md

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+---
+name: web-automation
+description: Browse and scrape web pages using Playwright with Camoufox anti-detection browser. Use when automating web workflows, extracting page content to markdown, handling authenticated sessions, or scraping websites with bot protection.
+---
+
+# Web Automation with Camoufox (Codex)
+
+Automated web browsing and scraping using Playwright with Camoufox anti-detection browser.
+
+## Requirements
+
+- Node.js 20+
+- pnpm
+- Network access to download browser binaries
+
+## First-Time Setup
+
+```bash
+cd ~/.openclaw/workspace/skills/web-automation/scripts
+pnpm install
+npx camoufox-js fetch
+```
+
+## Prerequisite Check (MANDATORY)
+
+Before running any automation, verify Playwright + Camoufox dependencies are installed and scripts are configured to use Camoufox.
+
+```bash
+cd ~/.openclaw/workspace/skills/web-automation/scripts
+node -e "require.resolve('playwright-core/package.json');require.resolve('camoufox-js/package.json');console.log('OK: playwright-core + camoufox-js installed')"
+node -e "const fs=require('fs');const t=fs.readFileSync('browse.ts','utf8');if(!/camoufox-js/.test(t)){throw new Error('browse.ts is not configured for Camoufox')}console.log('OK: Camoufox integration detected in browse.ts')"
+```
+
+If any check fails, stop and return:
+
+"Missing dependency/config: web-automation requires `playwright-core` + `camoufox-js` and Camoufox-based scripts. Run setup in this skill, then retry."
+
+## Quick Reference
+
+- Browse page: `npx tsx browse.ts --url "https://example.com"`
+- Scrape markdown: `npx tsx scrape.ts --url "https://example.com" --mode main --output page.md`
+- Authenticate: `npx tsx auth.ts --url "https://example.com/login"`
+
+## Notes
+
+- Sessions persist in Camoufox profile storage.
+- Use `--wait` for dynamic pages.
+- Use `--mode selector --selector "..."` for targeted extraction.