Add user registration and auth web app

FastAPI + Jinja2 + MariaDB web application with registration,
login, profile, password reset, and email confirmation flows.
All UI in Russian. Styled with Evotor brand colors.

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

web/templates/register.html

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+{% extends "base.html" %}
+{% block title %}Регистрация — EvoSync{% endblock %}
+
+{% block content %}
+<div class="form-card">
+    <h1>Регистрация</h1>
+    <form method="post" action="/register">
+        <div class="form-group">
+            <label for="first_name">Имя</label>
+            <input type="text" id="first_name" name="first_name" value="{{ form.first_name if form else '' }}">
+        </div>
+        <div class="form-group">
+            <label for="last_name">Фамилия</label>
+            <input type="text" id="last_name" name="last_name" value="{{ form.last_name if form else '' }}">
+        </div>
+        <div class="form-group">
+            <label for="email">Email *</label>
+            <input type="email" id="email" name="email" value="{{ form.email if form else '' }}" required>
+        </div>
+        <div class="form-group">
+            <label for="phone">Телефон *</label>
+            <input type="tel" id="phone" name="phone" value="{{ form.phone if form else '' }}" required>
+        </div>
+        <div class="form-group">
+            <label for="password">Пароль *</label>
+            <input type="password" id="password" name="password" required>
+        </div>
+        <div class="form-group">
+            <label for="password_confirm">Подтверждение пароля *</label>
+            <input type="password" id="password_confirm" name="password_confirm" required>
+        </div>
+        <button type="submit" class="btn btn-primary">Зарегистрироваться</button>
+    </form>
+    <div class="form-links">
+        <a href="/login">Уже есть аккаунт? Войти</a>
+    </div>
+</div>
+{% endblock %}