Presearch MCP Server

# Samples Attach these generated files in GitHub Releases for demo: - Search exports: - `exports/search_export.html` - `exports/search_json.json` - `exports/search_csv.csv` - Site exports: - `exports/sites_test.html` - `exports/sites_md.markdown` - `exports/sites_json.json` - `exports/sites_pdf-1.pdf` (DOM render) - `exports/sites_pdf_screenshot-1.pdf` (screenshot mode) These were produced by in-depth tests and represent real outputs. Include screenshots of the PDF if desired.