feat: frps-manager v1.0 - frp 0.70.1 multi-tenant web management system

- Multi-tenant client/proxy management with Flask+SQLite
- Frps server control (start/restart/token rotation)
- Generate frpc.ini with shared server token + admin API
- Dashboard API integration (live client/proxy status)
- RBAC: admin/tenant_admin/user roles
- Audit logging for all operations
- Systemd service files included
- Requires legacy INI format (frp 0.70 TOML auth broken)

templates/logs.html

@@ -0,0 +1,33 @@
+{% extends "base.html" %}
+{% block title %}审计日志 · frps-manager{% endblock %}
+{% block content %}
+<h1>审计日志</h1>
+<p class="muted small">共 {{ total }} 条</p>
+<table class="table">
+  <thead>
+    <tr><th>时间</th><th>用户</th><th>动作</th><th>对象</th><th>详情</th><th>IP</th></tr>
+  </thead>
+  <tbody>
+  {% for e in items %}
+    <tr>
+      <td>{{ e.created_at|fmt_dt }}</td>
+      <td>{{ e.username or '-' }}</td>
+      <td><span class="action-tag">{{ e.action }}</span></td>
+      <td>
+        {{ e.target_type or '-' }}
+        {% if e.target_label %}<br><code>{{ e.target_label }}</code>{% endif %}
+      </td>
+      <td>{{ e.detail or '' }}</td>
+      <td><code>{{ e.ip or '-' }}</code></td>
+    </tr>
+  {% endfor %}
+  </tbody>
+</table>
+{% if total > per %}
+<div class="pagination">
+  {% if page > 1 %}<a href="?page={{ page-1 }}">上一页</a>{% endif %}
+  <span class="muted">第 {{ page }} 页 / 共 {{ ((total + per - 1) // per) }} 页</span>
+  {% if page * per < total %}<a href="?page={{ page+1 }}">下一页</a>{% endif %}
+</div>
+{% endif %}
+{% endblock %}