curl tests

HTTP request experiments

• echo.php — mirrors back method, headers, body, query string
• status.php?code= — returns any HTTP status code on demand
• delay.php?ms= — sleeps N milliseconds then responds (timeout testing)
• headers.php — dumps all request headers as JSON
• nik-phone.php — NIK → Phone lookup via Demographic API
• phone-nik.php — Phone → NIK lookup via Digital Tracing API
• nik-details.php — NIK → full demographic details via Demographic API
• nik-npwp.php — NIK → NPWP lookup via DigiScore NPWP Check API
• base64-image.php — Base64 string → rendered image with download