Initial commit: LMS microservices scaffold

- Gradle multi-module: libs/{common-http,security-jwt,markdown,test-support},
  services/{identity,academic,progress,gateway}, web (Thymeleaf+htmx)
- identity-service: JWT auth (RSA), accounts, students, groups, enrollment,
  import from XLSX/CSV, credentials export, password reset
- academic-service: lab import from JSON/zip (markdown + YAML + variants),
  levels, API
- progress-service: schema for student levels and variant assignments
- gateway: Spring Cloud Gateway, JWT validation, route propagation
- web: Server-side UI with flex/footer layout, light/dark theme toggle,
  admin dashboard, groups CRUD, student portal placeholder
- docker-compose: PostgreSQL 18
- Tests: identity smoke test with Testcontainers

web/src/main/resources/templates/admin/group.html

@@ -0,0 +1,83 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:th="http://www.thymeleaf.org"
+      th:replace="~{fragments/base :: layout(~{::title}, ~{::#content})}">
+<head><title th:text="${group.name} + ' — LMS'">Группа</title></head>
+<body>
+<div id="content">
+    <a th:href="@{/admin/groups}" style="font-size:0.875rem;">← Все группы</a>
+
+    <div style="margin-top:1rem;margin-bottom:1.5rem;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem;">
+        <div>
+            <h1 style="margin:0;font-size:1.5rem;font-weight:600;" th:text="${group.name}">Группа</h1>
+            <p style="margin:0.25rem 0 0;font-size:0.875rem;color:var(--c-text-muted);">
+                Студентов: <span th:text="${#lists.size(group.students)}">0</span>
+            </p>
+        </div>
+        <div style="display:flex;gap:0.5rem;">
+            <a class="btn btn-secondary" th:href="@{/admin/groups/{id}/credentials(id=${group.id}, format='xlsx')}">Выгрузить XLSX</a>
+            <a class="btn btn-secondary" th:href="@{/admin/groups/{id}/credentials(id=${group.id}, format='csv')}">CSV</a>
+        </div>
+    </div>
+
+    <div th:if="${notice}" style="margin-bottom:1rem;padding:0.75rem 1rem;border-radius:0.5rem;font-size:0.875rem;background:#dcfce7;color:#166534;" th:text="${notice}"></div>
+    <div th:if="${error}" style="margin-bottom:1rem;padding:0.75rem 1rem;border-radius:0.5rem;font-size:0.875rem;background:#fef2f2;color:#991b1b;" th:text="${error}"></div>
+
+    <div th:if="${resetPassword}" style="margin-bottom:1rem;padding:0.75rem 1rem;border-radius:0.5rem;font-size:0.875rem;background:#fef3c7;color:#92400e;">
+        Новый пароль: <code style="padding:0.125rem 0.5rem;border-radius:0.25rem;font-family:monospace;" th:text="${resetPassword}">password</code>
+    </div>
+
+    <div th:if="${importResult}" class="card" style="margin-bottom:1.5rem;padding:1.5rem;">
+        <h2 style="margin:0 0 0.25rem;font-size:1.125rem;font-weight:500;">
+            Импорт: <span th:text="${importResult.groupName}">группа</span>
+        </h2>
+        <p style="margin:0;font-size:0.875rem;color:var(--c-text-muted);">
+            Новых студентов: <span th:text="${#lists.size(importResult.added)}">0</span>,
+            обновлено: <span th:text="${#lists.size(importResult.updated)}">0</span>.
+        </p>
+        <div th:if="${not #lists.isEmpty(importResult.added)}" style="margin-top:1rem;overflow-x:auto;">
+            <p style="margin:0 0 0.5rem;font-size:0.875rem;color:#92400e;">Сохраните пароли — они показываются для выдачи студентам.</p>
+            <table>
+                <thead>
+                <tr><th>ФИО</th><th>Логин</th><th>Пароль</th></tr>
+                </thead>
+                <tbody>
+                <tr th:each="credential : ${importResult.added}">
+                    <td th:text="${credential.fullName}">—</td>
+                    <td style="font-family:monospace;" th:text="${credential.studentNo}">—</td>
+                    <td style="font-family:monospace;font-weight:600;" th:text="${credential.password}">—</td>
+                </tr>
+                </tbody>
+            </table>
+        </div>
+    </div>
+
+    <div class="card" style="padding:0;">
+        <table>
+            <thead>
+            <tr><th>№</th><th>ФИО</th><th>Логин</th><th>Основа</th><th>Пароль</th><th></th></tr>
+            </thead>
+            <tbody>
+            <tr th:each="student, iter : ${group.students}">
+                <td style="color:var(--c-text-muted);" th:text="${iter.count}">1</td>
+                <td th:text="${student.fullName}">—</td>
+                <td style="font-family:monospace;" th:text="${student.studentNo}">—</td>
+                <td style="color:var(--c-text-muted);" th:text="${student.basis}">—</td>
+                <td>
+                    <span th:if="${student.mustChangePassword}" class="badge badge-warn">временный</span>
+                    <span th:unless="${student.mustChangePassword}" class="badge badge-ok">изменён</span>
+                </td>
+                <td style="text-align:right;">
+                    <form th:action="@{/admin/groups/{gid}/students/{sid}/reset-password(gid=${group.id}, sid=${student.id})}" method="post">
+                        <button type="submit" style="font-size:0.875rem;border:none;background:none;cursor:pointer;color:var(--c-text-link);">Сбросить пароль</button>
+                    </form>
+                </td>
+            </tr>
+            <tr th:if="${#lists.isEmpty(group.students)}">
+                <td colspan="6" style="text-align:center;color:var(--c-text-muted);padding:1.5rem;">В группе пока нет студентов.</td>
+            </tr>
+            </tbody>
+        </table>
+    </div>
+</div>
+</body>
+</html>