feat: add Turnstile anti-bot, email field, and metadata to contact form

- Add Cloudflare Turnstile widget support (site key configurable in config.js,
  secret key in contact.php — both empty until widget created at dash.cloudflare.com)
- Add email input field to contact form (parity with hhivp)
- Add company length validation (200 chars) to contact.php
- Add IP, country (CF-IPCountry header), and referer metadata to Telegram notifications
- Add company and email fields to SMTP email body
- Turnstile script loaded in index.html, widget rendered conditionally when TURNSTILE_SITE_KEY is set

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

index.html

@@ -121,6 +121,9 @@
     }
     </script>
 
+    <!-- Cloudflare Turnstile -->
+    <script src="https://challenges.cloudflare.com/turnstile/v0/api.js" async defer></script>
+
     <!-- Google tag (gtag.js) -->
     <script async src="https://www.googletagmanager.com/gtag/js?id=G-C9J0D8FFH3"></script>
     <script>

public/api/contact.php

@@ -37,9 +37,11 @@ if (!$data) {
 }
 
 $name    = htmlspecialchars(trim($data['name'] ?? ''), ENT_QUOTES);
+$company = htmlspecialchars(trim($data['company'] ?? ''), ENT_QUOTES);
 $phone   = htmlspecialchars(trim($data['phone'] ?? ''), ENT_QUOTES);
 $email   = htmlspecialchars(trim($data['email'] ?? ''), ENT_QUOTES);
 $message = htmlspecialchars(trim($data['message'] ?? ''), ENT_QUOTES);
+$turnstileToken = trim($data['turnstileToken'] ?? '');
 
 if (!$name || !$message) {
     http_response_code(400);
@@ -54,20 +56,54 @@ if ($email && !filter_var($email, FILTER_VALIDATE_EMAIL)) {
     exit;
 }
 if (mb_strlen($name) > 100) { http_response_code(400); echo json_encode(['error' => 'Name too long']); exit; }
+if (mb_strlen($company) > 200) { http_response_code(400); echo json_encode(['error' => 'Company too long']); exit; }
 if (mb_strlen($email) > 254) { http_response_code(400); echo json_encode(['error' => 'Email too long']); exit; }
 if (mb_strlen($phone) > 30)  { http_response_code(400); echo json_encode(['error' => 'Phone too long']); exit; }
 if (mb_strlen($message) > 5000) { http_response_code(400); echo json_encode(['error' => 'Message too long']); exit; }
 
+// ─── Cloudflare Turnstile verification ───────────────────────────────────────
+$TURNSTILE_SECRET = ''; // TODO: Create widget at dash.cloudflare.com → Turnstile → Add site (sag24.ru)
+if ($TURNSTILE_SECRET) {
+    if (!$turnstileToken) {
+        http_response_code(400);
+        echo json_encode(['error' => 'Bot verification required.']);
+        exit;
+    }
+    $ch = curl_init('https://challenges.cloudflare.com/turnstile/v0/siteverify');
+    curl_setopt_array($ch, [
+        CURLOPT_POST           => true,
+        CURLOPT_POSTFIELDS     => http_build_query(['secret' => $TURNSTILE_SECRET, 'response' => $turnstileToken, 'remoteip' => $ip]),
+        CURLOPT_RETURNTRANSFER => true,
+        CURLOPT_TIMEOUT        => 10,
+    ]);
+    $tsResult = json_decode(curl_exec($ch), true);
+    curl_close($ch);
+    if (($tsResult['success'] ?? false) !== true) {
+        http_response_code(400);
+        echo json_encode(['error' => 'Bot verification failed. Please try again.']);
+        exit;
+    }
+}
+
 // ─── Telegram (best-effort, not fatal) ───────────────────────────────────────
 $BOT_TOKEN = '8138813013:AAElH2L5NspRLSdiFjDz6Qf32n4G24P_cj8';
 $CHAT_ID   = '-5230603582';
 
+$userAgent = $_SERVER['HTTP_USER_AGENT'] ?? 'unknown';
+$referer   = $_SERVER['HTTP_REFERER'] ?? '';
+$country   = $_SERVER['HTTP_CF_IPCOUNTRY'] ?? '';
+
 $text  = "🔔 <b>Заявка с sag24.ru</b>\n\n";
 $text .= "👤 <b>Имя:</b> {$name}\n";
-if ($phone) $text .= "📱 <b>Телефон:</b> {$phone}\n";
+if ($company) $text .= "🏢 <b>Компания:</b> {$company}\n";
 if ($email) $text .= "📧 <b>Email:</b> {$email}\n";
+if ($phone) $text .= "📱 <b>Телефон:</b> {$phone}\n";
 $text .= "\n💬 <b>Сообщение:</b>\n{$message}\n";
-$text .= "\n⏰ " . date('d.m.Y H:i', time() + 3 * 3600) . " MSK";
+$text .= "\n📊 <b>Метаданные:</b>\n";
+$text .= "🌍 IP: {$ip}\n";
+if ($country) $text .= "🌐 Страна: {$country}\n";
+if ($referer) $text .= "🔗 Источник: {$referer}\n";
+$text .= "⏰ " . date('d.m.Y H:i', time() + 3 * 3600) . " MSK";
 
 $ch = curl_init("https://tg-relay.it-resheniya-2018.workers.dev/bot{$BOT_TOKEN}/sendMessage");
 curl_setopt_array($ch, [
@@ -89,9 +125,12 @@ $mail_to   = 'info@sag24.ru';
 
 $subject = "=?UTF-8?B?" . base64_encode("Заявка с sag24.ru от {$name}") . "?=";
 $body    = "Имя: {$name}\r\n";
-if ($phone)   $body .= "Телефон: {$phone}\r\n";
+if ($company) $body .= "Компания: {$company}\r\n";
 if ($email)   $body .= "Email: {$email}\r\n";
+if ($phone)   $body .= "Телефон: {$phone}\r\n";
 $body .= "\r\nСообщение:\r\n{$message}\r\n";
+$body .= "\r\nIP: {$ip}";
+if ($country) $body .= " | Страна: {$country}";
 $body .= "\r\n" . date('d.m.Y H:i', time() + 3 * 3600) . " MSK";
 
 try {

src/config.js

@@ -3,3 +3,6 @@ export const WHATSAPP_PHONE = '74953637476' // без +
 export const TELEGRAM_USERNAME = 'sag24ru'  // @username без @
 export const FORM_ENDPOINT = '/api/contact.php'
 export const EMAIL = 'info@sag24.ru'
+
+// Cloudflare Turnstile — создать виджет: dash.cloudflare.com → Turnstile → Add site (sag24.ru)
+export const TURNSTILE_SITE_KEY = ''

src/pages/Home.jsx

@@ -2,7 +2,7 @@ import React, { useState } from 'react'
 import { ChevronRight, Server, Shield, Headphones, Phone, Mail, MapPin, CheckCircle2, ChevronDown } from 'lucide-react'
 import { useLanguage } from '../contexts/LanguageContext.jsx'
 import { useReveal } from '../components/useReveal.js'
-import { FORM_ENDPOINT, EMAIL } from '../config.js'
+import { FORM_ENDPOINT, EMAIL, TURNSTILE_SITE_KEY } from '../config.js'
 
 const serviceIcons = [Server, Shield, Headphones]
 
@@ -49,7 +49,7 @@ function FaqItem({ q, a }) {
 
 export default function Home() {
   const { t } = useLanguage()
-  const [formState, setFormState] = useState({ name: '', company: '', phone: '', message: '' })
+  const [formState, setFormState] = useState({ name: '', company: '', email: '', phone: '', message: '' })
   const [submitted, setSubmitted] = useState(false)
   const [sending, setSending] = useState(false)
   const [error, setError] = useState('')
@@ -70,10 +70,11 @@ export default function Home() {
 
     if (FORM_ENDPOINT) {
       try {
+        const turnstileToken = document.querySelector('[name="cf-turnstile-response"]')?.value || ''
         const res = await fetch(FORM_ENDPOINT, {
           method: 'POST',
           headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
-          body: JSON.stringify(formState),
+          body: JSON.stringify({ ...formState, turnstileToken }),
         })
         if (res.ok) {
           setSubmitted(true)
@@ -316,6 +317,13 @@ export default function Home() {
                     onChange={e => setFormState({ ...formState, company: e.target.value })}
                     className="w-full bg-white/10 border border-white/10 rounded-lg px-4 py-3 text-white placeholder-slate-400 focus:outline-none focus:border-blue-500 transition-colors text-sm"
                   />
+                  <input
+                    type="email"
+                    placeholder={t('contact.formEmail')}
+                    value={formState.email}
+                    onChange={e => setFormState({ ...formState, email: e.target.value })}
+                    className="w-full bg-white/10 border border-white/10 rounded-lg px-4 py-3 text-white placeholder-slate-400 focus:outline-none focus:border-blue-500 transition-colors text-sm"
+                  />
                   <input
                     type="tel"
                     placeholder={t('contact.formPhone')}
@@ -331,6 +339,13 @@ export default function Home() {
                     onChange={e => setFormState({ ...formState, message: e.target.value })}
                     className="w-full bg-white/10 border border-white/10 rounded-lg px-4 py-3 text-white placeholder-slate-400 focus:outline-none focus:border-blue-500 transition-colors text-sm resize-none"
                   />
+                  {TURNSTILE_SITE_KEY && (
+                    <div
+                      className="cf-turnstile"
+                      data-sitekey={TURNSTILE_SITE_KEY}
+                      data-theme="dark"
+                    />
+                  )}
                   {error && <p className="text-red-400 text-sm">{error}</p>}
                   <button
                     type="submit"

src/translations/en.js

@@ -50,6 +50,7 @@ export const en = {
     addressValue: 'Moscow Region, Pushkino, 38/14',
     formName: 'Your name',
     formCompany: 'Company',
+    formEmail: 'Your email',
     formMessage: 'Describe your task',
     formPhone: 'Your phone',
     formSubmit: 'Send Request',

src/translations/ru.js

@@ -50,6 +50,7 @@ export const ru = {
     addressValue: 'Московская область, Пушкино, д. 38/14',
     formName: 'Ваше имя',
     formCompany: 'Компания',
+    formEmail: 'Ваш email',
     formMessage: 'Опишите задачу',
     formPhone: 'Ваш телефон',
     formSubmit: 'Отправить заявку',