Add web-automation skill variants and inline prerequisite checks

skills/web-automation/claude-code/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 (Claude Code)
+
+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 ~/.claude/skills/web-automation/scripts
+pnpm install
+npx camoufox-js fetch
+```
+
+If native dependency build errors appear (e.g., better-sqlite3), rebuild from the reported package directory.
+
+## 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.