miniapp: phone validation on intro — blocks transition with bad number

- New isValidPhone(raw): checks 11-digit Russian after normalization (8/7/+7/9-prefix)
- Intro 'Начать' button now custom click handler instead of data-go
- Validates name (non-empty) and phone (Russian format)
- Inline .field-error red message under invalid field
- .field-hint shows format help under phone input
- Haptic 'warning' feedback on invalid submit
- Phone is auto-normalized to '+7 900 123-45-67' before transition

miniapp/assets/podbor.css

@@ -148,6 +148,27 @@
   margin: 0;
 }
 
+/* ----- Form errors / hints ----- */
+.field-error {
+  font-family: var(--font-mono);
+  font-size: 11px;
+  letter-spacing: 0.02em;
+  color: #8A3E2A;
+  min-height: 14px;
+  margin-top: 4px;
+  line-height: 1.3;
+}
+.field-error:empty { display: none; }
+
+.field-hint {
+  font-family: var(--font-mono);
+  font-size: 10px;
+  letter-spacing: 0.04em;
+  color: var(--muted);
+  margin-top: 4px;
+  line-height: 1.3;
+}
+
 /* ----- Form basics ----- */
 .field {
   display: flex;

miniapp/assets/podbor.js

@@ -178,22 +178,74 @@ const Podbor = (function () {
           <label class="field">
             <span class="field-label">Клиент</span>
             <input type="text" data-bind="client_name" value="${state.client_name || ""}" placeholder="Например: А. Пестова">
+            <span class="field-error" id="nameError"></span>
           </label>
         </div>
         <div class="form-row">
           <label class="field">
             <span class="field-label">Телефон</span>
-            <input type="tel" data-bind="client_phone" value="${state.client_phone || ""}" placeholder="+7 ...">
+            <input type="tel" data-bind="client_phone" value="${state.client_phone || ""}" placeholder="+7 900 123-45-67">
+            <span class="field-hint">Формат: +7, 8, или 10 цифр начиная с 9</span>
+            <span class="field-error" id="phoneError"></span>
           </label>
         </div>
 
         <div class="podbor-cta-row">
-          <button class="btn-primary" data-go="categories">Начать</button>
+          <button class="btn-primary" id="introNext">Начать</button>
         </div>
       </section>
     `);
     bindInputs(node);
-    bindNav(node);
+
+    const phoneInput = node.querySelector("input[data-bind='client_phone']");
+    const phoneError = node.querySelector("#phoneError");
+    const nameInput = node.querySelector("input[data-bind='client_name']");
+    const nameError = node.querySelector("#nameError");
+
+    // Валидация на blur — мягкие подсказки
+    phoneInput.addEventListener("blur", () => {
+      const v = phoneInput.value.trim();
+      if (v && !isValidPhone(v)) {
+        phoneError.textContent = "Похоже на неполный номер. Нужно 11 цифр (или 10 с цифры 9)";
+      } else {
+        phoneError.textContent = "";
+      }
+    });
+
+    node.querySelector("#introNext").addEventListener("click", () => {
+      // Имя
+      const name = (state.client_name || "").trim();
+      if (!name) {
+        nameError.textContent = "Укажите имя клиента";
+        nameInput.focus();
+        haptic && haptic("warning");
+        return;
+      } else {
+        nameError.textContent = "";
+      }
+
+      // Телефон
+      const phone = (state.client_phone || "").trim();
+      if (!phone) {
+        phoneError.textContent = "Укажите телефон клиента";
+        phoneInput.focus();
+        haptic && haptic("warning");
+        return;
+      }
+      if (!isValidPhone(phone)) {
+        phoneError.textContent = "Неверный формат. Пример: +7 900 123-45-67 или 89001234567";
+        phoneInput.focus();
+        haptic && haptic("warning");
+        return;
+      }
+      // Нормализуем перед переходом
+      const normalized = normalizePhone(phone);
+      if (normalized !== phone) {
+        update({ client_phone: normalized });
+      }
+      go("categories");
+    });
+
     return node;
   }
 
@@ -1539,6 +1591,15 @@ const Podbor = (function () {
     return `+7 ${d.slice(1, 4)} ${d.slice(4, 7)}-${d.slice(7, 9)}-${d.slice(9, 11)}`;
   }
 
+  /* Проверка: получится ли валидный РФ-номер из введённого. */
+  function isValidPhone(raw) {
+    if (!raw) return false;
+    let d = raw.replace(/\D/g, "");
+    if (d.length === 11 && d.startsWith("8")) d = "7" + d.slice(1);
+    if (d.length === 10 && d.startsWith("9")) d = "7" + d;
+    return d.length === 11 && d.startsWith("7");
+  }
+
   function bindNav(node) {
     node.querySelectorAll("[data-go]").forEach(b => {
       b.addEventListener("click", () => go(b.dataset.go));

miniapp/index.html

@@ -12,8 +12,8 @@
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
   <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Geist:wght@400;500;600&family=Newsreader:ital,wght@0,400..600;1,400..600&family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@400;500&display=swap">
   <script src="https://telegram.org/js/telegram-web-app.js"></script>
-  <link rel="stylesheet" href="assets/styles.css?v=20260511i">
-  <link rel="stylesheet" href="assets/podbor.css?v=20260511i">
+  <link rel="stylesheet" href="assets/styles.css?v=20260511j">
+  <link rel="stylesheet" href="assets/podbor.css?v=20260511j">
 </head>
 <body>
   <main id="app">
@@ -21,10 +21,10 @@
       <div class="spinner"></div>
     </div>
   </main>
-  <script src="assets/icons.js?v=20260511i"></script>
-  <script src="assets/podbor.config.js?v=20260511i"></script>
-  <script src="assets/podbor.picts.js?v=20260511i"></script>
-  <script src="assets/podbor.js?v=20260511i"></script>
-  <script src="assets/app.js?v=20260511i"></script>
+  <script src="assets/icons.js?v=20260511j"></script>
+  <script src="assets/podbor.config.js?v=20260511j"></script>
+  <script src="assets/podbor.picts.js?v=20260511j"></script>
+  <script src="assets/podbor.js?v=20260511j"></script>
+  <script src="assets/app.js?v=20260511j"></script>
 </body>
 </html>