Release v1.4.0

ReadMe_EN.md

@@ -378,6 +378,32 @@ Valid     : 2026-02-01 to 2028-02-01
 
 ## Changelog
 
+### v1.4.0 (2026.10.7)
+
+**SimplePlugins Feature Migration & Remote Interaction Enhancements & MCP Expansion & i18n**
+
+**New features:**
+- **SimplePlugins feature migration (experimental)**: file management / privacy screen / drawing board migrated natively into the client and exposed as an "Experimental Features" right-click submenu, with 16x16 icons (bitmap array 66→69)
+- **MCP device management-control tools**: kill_process / operate_window / control_service / power_action behind a single McpManage flag (plus read-only off), with a ready→confirm lifecycle and WaitSendIdle buffer draining; "management operations" checkbox in MCP settings and an MCP toolbar entry
+- **Two-way remote chat**: a "远程交谈" toolbar button (COMMAND_CHAT 161 / TOKEN_CHAT_START 62) opens the chat dialog, with server-triggered screen lock / unlock
+- **TCP/UDP connection management**: a toolbar button lists the managed host's TCP/UDP connections with right-click force-disconnect for IPv4 TCP (iphlpapi enumeration + CConnectionsDlg)
+- **Machine management**: CMachineManager migrated (process / window / network / software / IE history / favorites / service / task / hosts enumeration plus process injection), COMMAND_MACHINE_MANAGE 162
+- **Auth-failed trigger**: new TRIGGER_AUTH_FAILED type (independent of the host-online trigger) pushes plugin DLLs on authorization failure, gated by ShouldLogAuth dedup
+- **iPhone remote audio**: Web Audio API + self-hosted opus-decoder WASM decoding fixes silent audio on iOS without MSE
+- **Quality & transfer controls**: configurable remote-desktop / screen-preview quality-level menus (six presets each) plus a file-transfer speed dialog (seven presets + unlimited, CMD_FILE_SPEED 252)
+- **Shine/HELL protocol selection**: choose the protocol when sharing / transferring a host, passed as a trailing colon field, backward compatible
+- **Go web UI subpath deployment**: YAMA_WEB_BASE_PATH mounts the whole web UI under a URL prefix
+- **i18n**: German (de_DE) as the fourth language, a language-switch toolbar button, remaining string translations; remote-desktop clipboard buttons (reachable in fullscreen)
+
+**Improvements:**
+- Notification keyword input is now multi-line (one keyword per line; the stored format stays semicolon-separated, compatible with existing notify.ini)
+
+**Bug fixes:**
+- HTTP continuation chunks mis-set m_bShouldUnmask, dropping subsequent packets (blank process list after kill)
+- Garbled instant-message popup title (GBK code_page declaration)
+- geo-IP lookup blocking the host double-click tooltip (only queried when a local DB is loaded, plus in-process caching)
+- Machine-management IE-history string leak (CoTaskMemFree) and privacy-screen 0xCC garbled logs
+
 ### v1.3.9 (2026.9.2)
 
 **MCP Server Integration (AI Remote Management) & Remote Control / File Transfer Loop & Master Enhancements**