v0.87.0

Changed

• Agent/Hub 公共逻辑收敛：将方言探测（detect_dialect/candidates_for_port）、操作分发（dispatch_sql/redis/file）、错误处理（send_session_error/ErrorBody）等重复代码提取到 rex-common，消除 Agent 与 Hub 之间的大量重复
• 手动指定方言：Agent 和 Hub 连接时支持所有 7 种方言的手动指定（clickhouse/sqlserver/oracle/mariadb）

SHA256SUMS

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412f6026f26c6fbbe0d888f582b6e264289bc0729b6df7ab04c5bbeda3537363  rex-hub-linux-arm64
43c0f2a017b6741fcb4a651ab71a00cad9067f11f9969432554e2eb7a12f5259  rex-hub-mac-amd64
26e73bd2192f620ffa104cc2f143311c251f5fcbae3632164e6b0a804fd3626a  rex-hub-mac-arm64
d5582101bc72288fd75cd8d90c66b7dad4b298f1408e69d4e6178d439dd4a459  rex-hub-windows-amd64.exe
6f8b3b907b058f77c903db26447cfbda63fd5897a3dcd2b5593eb49b5ed01bc7  rex-agent-linux-amd64
338cd01cd2d0ff984d5fd3ceecf0486585982365339467d2f3b0ecfe1d468aec  rex-agent-linux-arm64
08649bf65cd7a487934f0c0d38246aa676272ea4e9578f7a470c89db7589097b  rex-agent-mac-amd64
5735b244aa349549c17c128e53fa69d47644d53846981a15cc3cf6dcfa59592c  rex-agent-mac-arm64
9814d81aceb0e1a4b9dc3150c5892b3a1ee6d91cc99d342ae2ed42ce3c6abda3  rex-agent-windows-amd64.exe