feat: 上线前安全加固与发布工程化；appmall 由插件迁移为独立应用

安全（P0）
- 发布包签名：新增 scripts/package_keygen.php、scripts/package_verify.php、
  ywxapp\service\PackageVerifier；FrameworkService::apply() 解压前强制验签
  （ywxapp.framework_package_verify，默认开启）
- JWT 收紧：config/jwt.php 移除公开默认密钥，JwtService::assertStrongSecret()
  校验非空 / 长度≥32 / 已知弱值；.env.production.example 键名由 JWT_SECRET_KEY 修正为 JWT_SECRET
- /api/v1/Article：免登录白名单收窄为只读接口，写操作字段白名单 + assertOwner() 越权校验
- 开发者令牌：查找接口不再回显明文、统一失败文案 + 限流
- TemplateInstaller：文件名白名单 + realpath 归一化 + 目录内断言，修复 Zip Slip；补 use ZipArchive
- 后台登录：接入验证码、失败锁定与登录限流（config/ratelimit.php）
- 缓存 / Session 驱动可由 .env 覆盖（CACHE_DRIVER / SESSION_TYPE），集群部署改 redis
- paycenter 支付日志开关改为 PAY_LOG，不再跟随 APP_DEBUG

工程化 / 交付
- 新增 CHANGELOG.md 与 .env.production.example；composer.lock 入库锁定依赖版本
- 插件离线安装 CLI 增加 --uid，后台上传安装透传 uid，付费插件授权校验可通过
- 授权拒绝文案区分「未携带 uid」与「未找到有效授权」，便于排障
- .gitignore 放行 .env.production.example / .env.addon.example / .gitattributes / public/.htaccess

结构
- appmall 由 addon/appmall 迁移为独立应用 app/appmall（市场 / 开发者中心 / 审核 / 分润）

addon/iot/view/backend/admin/rule.html

@@ -0,0 +1,109 @@
+<div class="layui-container">
+    <div class="admin-title">转发规则（规则引擎 / 桥接到 EMQX）</div>
+    <div class="layui-text" style="margin-bottom:10px;color:#999;">
+        匹配"源主题过滤器"的消息，将被转发到外部 MQTT Broker（如 EMQX）。目标主题支持
+        <code>${topic}</code> 变量（沿用原主题）。规则最多 30s 后在 Broker 生效。
+        转发依赖 <code>workerman/mqtt</code> 客户端，未安装时自动跳过。
+    </div>
+    <div style="margin-bottom:10px;">
+        <button class="layui-btn layui-btn-sm" onclick="editRule()">+ 新增规则</button>
+    </div>
+    <table id="ruleTable" lay-filter="ruleTable"></table>
+</div>
+
+<!-- 行操作按钮模板 -->
+<script type="text/html" id="barRule">
+    <a class="layui-btn layui-btn-xs" lay-event="edit">编辑</a>
+    <a class="layui-btn layui-btn-xs layui-btn-danger" lay-event="del">删除</a>
+</script>
+
+<script>
+layui.use(['layer', 'jquery', 'form', 'table', 'http', 'ywxapp'], function(){
+    var http = layui.http;
+    var $ = layui.jquery, layer = layui.layer, table = layui.table;
+    function esc(s){ return String(s==null?'':s).replace(/&/g,'&amp;').replace(/"/g,'&quot;').replace(/</g,'&lt;'); }
+    function reload(){ table.reload('ruleTable'); }
+    function ok(res, then){ if(res.code===0){ then(); } else { layer.msg(res.message||'操作失败'); } }
+
+    // ================= 表格 =================
+    table.render({
+        elem: '#ruleTable',
+        url: '/iot/backend/ruleTable',
+        page: true,
+        limit: 20,
+        limits: [10, 20, 50, 100],
+        parseData: function (res) {
+            return {
+                code: res.code,
+                msg: res.message || res.msg || '',
+                count: (res.data && res.data.count) || 0,
+                data: (res.data && res.data.list) || []
+            };
+        },
+        cols: [[
+            { field: 'name', title: '名称', minWidth: 130 },
+            { field: 'source_filter', title: '源主题过滤器', minWidth: 150 },
+            { field: 'target_broker', title: '目标Broker', minWidth: 170 },
+            { field: 'target_topic', title: '目标主题', minWidth: 140, templet: function (d) {
+                    return d.target_topic ? esc(d.target_topic) : '${topic}';
+                } },
+            { field: 'target_qos', title: 'QoS', width: 60, align: 'center' },
+            { field: 'enabled', title: '状态', width: 90, align: 'center', templet: function (d) {
+                    return d.enabled ? '<span class="layui-badge layui-bg-green">启用</span>' : '<span class="layui-badge">停用</span>';
+                } },
+            { title: '操作', width: 150, align: 'center', toolbar: '#barRule' }
+        ]]
+    });
+
+    table.on('tool(ruleTable)', function (obj) {
+        if (obj.event === 'edit') { editRule(obj.data); }
+        else if (obj.event === 'del') { delRule(obj.data.id); }
+    });
+
+    // ================= 新增 / 编辑 =================
+    window.editRule = function(row){
+        row = row || {};
+        var sel = function(name, val, opts){
+            var s = '<select name="'+name+'">';
+            opts.forEach(function(o){ s += '<option value="'+o[0]+'" '+(String(val)==String(o[0])?'selected':'')+'>'+o[1]+'</option>'; });
+            return s + '</select>';
+        };
+        var html = '<form class="layui-form" style="padding:20px;" lay-filter="ruleForm">'
+          + '<input type="hidden" name="id" value="'+(row.id||'')+'">'
+          + '<div class="layui-form-item"><label class="layui-form-label">规则名称</label><div class="layui-input-inline"><input name="name" class="layui-input" value="'+esc(row.name)+'"></div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">源主题过滤器</label><div class="layui-input-inline"><input name="source_filter" class="layui-input" value="'+esc(row.source_filter)+'" placeholder="如 sensor/+/temp"></div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">目标类型</label><div class="layui-input-inline">'+sel('target_type', row.target_type||'mqtt', [['mqtt','MQTT Broker']])+'</div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">目标Broker</label><div class="layui-input-inline"><input name="target_broker" class="layui-input" value="'+esc(row.target_broker)+'" placeholder="host:port，如 192.168.1.10:1883"></div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">目标主题</label><div class="layui-input-inline"><input name="target_topic" class="layui-input" value="'+esc(row.target_topic)+'" placeholder="${topic} 表示沿用原主题"></div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">目标QoS</label><div class="layui-input-inline">'+sel('target_qos', (row.target_qos===undefined?0:row.target_qos), [[0,'0'],[1,'1'],[2,'2']])+'</div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">ClientID</label><div class="layui-input-inline"><input name="target_clientid" class="layui-input" value="'+esc(row.target_clientid)+'" placeholder="可选"></div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">用户名</label><div class="layui-input-inline"><input name="target_username" class="layui-input" value="'+esc(row.target_username)+'" placeholder="可选"></div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">密码</label><div class="layui-input-inline"><input name="target_password" type="password" class="layui-input" value="'+esc(row.target_password)+'" placeholder="可选"></div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">状态</label><div class="layui-input-inline">'+sel('enabled', (row.enabled===undefined?1:row.enabled), [[1,'启用'],[0,'停用']])+'</div></div>'
+          + '<div class="layui-form-item"><label class="layui-form-label">备注</label><div class="layui-input-inline"><input name="remark" class="layui-input" value="'+esc(row.remark)+'"></div></div>'
+          + '</form>';
+        layer.open({type:1, title:(row.id?'编辑':'新增')+'转发规则', area:['560px','auto'], content:html, btn:['保存','取消'],
+            success:function(){ layui.form.render(); },
+            yes:function(idx){
+                var data = {};
+                $('[lay-filter=ruleForm]').serializeArray().forEach(function(i){ data[i.name]=i.value; });
+                http.post('/iot/backend/saveRule', data).then(function(res){
+                    layer.msg(res.message||res.msg||'ok');
+                    ok(res, function(){ layer.close(idx); setTimeout(reload, 600); });
+                });
+            }
+        });
+    };
+
+    // ================= 删除 =================
+    window.delRule = function(id){
+        layer.confirm('确认删除该规则？', function(idx){
+            http.post('/iot/backend/deleteRule', {id:id}).then(function(res){
+                layer.msg(res.message||'已删除');
+                setTimeout(reload, 600);
+            });
+            layer.close(idx);
+        });
+    };
+});
+</script>