负载均衡深度改造，增加分布式锁，表唯一约束等

sql/03-easyflow-v2.p1-ha.sql

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+SET NAMES utf8mb4;
+SET FOREIGN_KEY_CHECKS = 0;
+
+-- P1: 多机部署并发安全增强（唯一约束 + 去重）
+-- 注意：本脚本为增量脚本，建议仅执行一次。
+
+-- 1) 清理 bot-knowledge 重复绑定
+DELETE t1
+FROM tb_bot_document_collection t1
+         INNER JOIN tb_bot_document_collection t2
+                    ON t1.bot_id <=> t2.bot_id
+                        AND t1.document_collection_id <=> t2.document_collection_id
+                        AND t1.id > t2.id;
+
+-- 2) 清理 bot-workflow 重复绑定
+DELETE t1
+FROM tb_bot_workflow t1
+         INNER JOIN tb_bot_workflow t2
+                    ON t1.bot_id <=> t2.bot_id
+                        AND t1.workflow_id <=> t2.workflow_id
+                        AND t1.id > t2.id;
+
+-- 3) 清理 bot-plugin 重复绑定
+DELETE t1
+FROM tb_bot_plugin t1
+         INNER JOIN tb_bot_plugin t2
+                    ON t1.bot_id <=> t2.bot_id
+                        AND t1.plugin_item_id <=> t2.plugin_item_id
+                        AND t1.id > t2.id;
+
+-- 4) 清理 bot-mcp 重复绑定
+DELETE t1
+FROM tb_bot_mcp t1
+         INNER JOIN tb_bot_mcp t2
+                    ON t1.bot_id <=> t2.bot_id
+                        AND t1.mcp_id <=> t2.mcp_id
+                        AND t1.mcp_tool_name <=> t2.mcp_tool_name
+                        AND t1.id > t2.id;
+
+-- 5) 清理最近使用重复记录
+DELETE t1
+FROM tb_bot_recently_used t1
+         INNER JOIN tb_bot_recently_used t2
+                    ON t1.created_by = t2.created_by
+                        AND t1.bot_id = t2.bot_id
+                        AND t1.id > t2.id;
+
+-- 增加唯一索引（并发写最终一致性兜底）
+ALTER TABLE tb_bot_document_collection
+    ADD UNIQUE INDEX uni_bot_document_collection (bot_id, document_collection_id);
+
+ALTER TABLE tb_bot_workflow
+    ADD UNIQUE INDEX uni_bot_workflow (bot_id, workflow_id);
+
+ALTER TABLE tb_bot_plugin
+    ADD UNIQUE INDEX uni_bot_plugin (bot_id, plugin_item_id);
+
+ALTER TABLE tb_bot_mcp
+    ADD UNIQUE INDEX uni_bot_mcp (bot_id, mcp_id, mcp_tool_name);
+
+ALTER TABLE tb_bot_recently_used
+    ADD UNIQUE INDEX uni_bot_recently_used (created_by, bot_id);
+
+SET FOREIGN_KEY_CHECKS = 1;