feat(apisix): add Cloudron package

- Implements Apache APISIX packaging for Cloudron platform.
- Includes Dockerfile, CloudronManifest.json, and start.sh.
- Configured to use Cloudron's etcd addon.

🤖 Generated with Gemini CLI
Co-Authored-By: Gemini <noreply@google.com>

CloudronPackages/APISIX/apisix-source/apisix/plugins/mcp/broker/shared_dict.lua

@@ -0,0 +1,90 @@
+--
+-- Licensed to the Apache Software Foundation (ASF) under one or more
+-- contributor license agreements.  See the NOTICE file distributed with
+-- this work for additional information regarding copyright ownership.
+-- The ASF licenses this file to You under the Apache License, Version 2.0
+-- (the "License"); you may not use this file except in compliance with
+-- the License.  You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+local type           = type
+local setmetatable   = setmetatable
+local ngx            = ngx
+local ngx_sleep      = ngx.sleep
+local thread_spawn   = ngx.thread.spawn
+local thread_kill    = ngx.thread.kill
+local worker_exiting = ngx.worker.exiting
+local shared_dict    = ngx.shared["mcp-session"] -- TODO: rename to something like mcp-broker
+local core           = require("apisix.core")
+local broker_utils   = require("apisix.plugins.mcp.broker.utils")
+
+local _M = {}
+local mt = { __index = _M }
+
+
+local STORAGE_SUFFIX_QUEUE = ":queue"
+
+
+function _M.new(opts)
+    return setmetatable({
+        session_id = opts.session_id,
+        event_handler = {}
+    }, mt)
+end
+
+
+function _M.on(self, event, cb)
+    self.event_handler[event] = cb
+end
+
+
+function _M.push(self, message)
+    if not message then
+        return nil, "message is nil"
+    end
+    local ok, err = shared_dict:rpush(self.session_id .. STORAGE_SUFFIX_QUEUE, message)
+    if not ok then
+        return nil, "failed to push message to queue: " .. err
+    end
+    return true
+end
+
+
+function _M.start(self)
+    self.thread = thread_spawn(function()
+        while not worker_exiting() do
+            local item, err = shared_dict:lpop(self.session_id .. STORAGE_SUFFIX_QUEUE)
+            if err then
+                core.log.info("session ", self.session_id,
+                              " exit, failed to pop message from queue: ", err)
+                break
+            end
+            if item and type(item) == "string"
+                and type(self.event_handler[broker_utils.EVENT_MESSAGE]) == "function" then
+                self.event_handler[broker_utils.EVENT_MESSAGE](
+                    core.json.decode(item), { raw = item }
+                )
+            end
+
+            ngx_sleep(0.1) -- yield to other light threads
+        end
+    end)
+end
+
+
+function _M.close(self)
+    if self.thread then
+        thread_kill(self.thread)
+        self.thread = nil
+    end
+end
+
+
+return _M

CloudronPackages/APISIX/apisix-source/apisix/plugins/mcp/broker/utils.lua

@@ -0,0 +1,21 @@
+--
+-- Licensed to the Apache Software Foundation (ASF) under one or more
+-- contributor license agreements.  See the NOTICE file distributed with
+-- this work for additional information regarding copyright ownership.
+-- The ASF licenses this file to You under the Apache License, Version 2.0
+-- (the "License"); you may not use this file except in compliance with
+-- the License.  You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+local _M = {}
+
+_M.EVENT_MESSAGE = "message"
+
+return _M