chore: release v1.5.0

CHANGELOG.md

@@ -6,6 +6,18 @@ This file records the notable changes in each dsh-im release. Its format follows
 
 ## [Unreleased]
 
+## [1.5.0] - 2026-08-24
+
+### Added / 新增
+
+- Harness 返回的图片现在会在九个内置 IM 渠道中优先使用原生图片消息呈现；渠道不支持或明确拒绝图片发送时自动回退为文件附件。
+  Images returned by Harness now prefer native image messages across all nine built-in IM channels, with automatic file-attachment fallback when a channel does not support or definitively rejects image delivery.
+
+### Changed / 变更
+
+- 统一结果文件与图片的发送、交付回执、失败提示和资源释放，并在发送结果不确定时避免补发文件造成重复消息。
+  Unified result-file and image sending, delivery receipts, failure notices, and resource cleanup, while avoiding duplicate file fallback when an image delivery result is uncertain.
+
 ## [1.4.0] - 2026-08-24
 
 ### Added / 新增
@@ -200,7 +212,8 @@ This file records the notable changes in each dsh-im release. Its format follows
 - 改进 npm 发布包结构，保留 CLI 入口并避免安装脚本拦截。
   Improved npm package contents to preserve the CLI entry point and avoid install-script blocking.
 
-[Unreleased]: https://github.com/xmanrui/dsh-im/compare/v1.4.0...HEAD
+[Unreleased]: https://github.com/xmanrui/dsh-im/compare/v1.5.0...HEAD
+[1.5.0]: https://github.com/xmanrui/dsh-im/compare/v1.4.0...v1.5.0
 [1.4.0]: https://github.com/xmanrui/dsh-im/compare/v1.3.0...v1.4.0
 [1.3.0]: https://github.com/xmanrui/dsh-im/compare/v1.2.0...v1.3.0
 [1.2.0]: https://github.com/xmanrui/dsh-im/compare/v1.1.0...v1.2.0

README.en.md

@@ -59,11 +59,11 @@ Other IM platforms can be added through the same channel-adapter structure.
 
 All nine built-in channels can send JPEG, PNG, and WebP images, plus GIFs sent as image files, with optional captions to Harness. Each image is limited to 5 MB, and images in one message are limited to 20 MB in total.
 
-### Result-file delivery
+### Result-file and image delivery
 
 All nine built-in channels can return any file readable by Harness as a native channel attachment. Existing files and files created by the current task can both be sent directly. The capability is available to every connected bot by default, with no switch or per-bot allowlist, while existing text, image, streaming, command, and Session behavior remains unchanged.
 
-After the model calls the file-return tool, the plugin hands the specified file to the channel's native attachment API. The plugin adds no rules for file origin, creation time, workspace boundary, extension, content, count, size, or lifetime; the file only needs to exist and be readable. A channel may still reject delivery according to its own permissions, quota, file capability, or account tier, and the plugin reports that provider result.
+After the model calls the file-return tool, the plugin hands the specified file to the channel's native API. Images prefer native image messages; if a channel does not support or definitively rejects image delivery, the plugin falls back to a file attachment, while an uncertain result never triggers a duplicate fallback. The plugin adds no rules for file origin, creation time, workspace boundary, extension, content, count, size, or lifetime; the file only needs to exist and be readable. A channel may still reject delivery according to its own permissions, quota, file capability, or account tier, and the plugin reports that provider result.
 
 | Channel | Platform requirements |
 | --- | --- |

README.md

@@ -62,11 +62,11 @@ Connect IM bots to DeepSeek Harness by scanning a QR code, using an App Manifest
 
 九个内置渠道均支持把 JPEG、PNG、WebP 图片，以及以图片文件方式发送的 GIF，连同可选文字说明发送给 Harness；单张图片上限为 5 MB，单条消息中的图片总大小上限为 20 MB。
 
-### 结果文件回传
+### 结果文件与图片回传
 
 九个内置渠道均已实现把 Harness 可读取的文件作为渠道原生附件回传。已有文件和当前任务新生成的文件都可以直接发送；该能力对所有已连接机器人默认可用，无需开关或机器人白名单，原有文字、图片、流式回复、命令和会话行为保持不变。
 
-模型调用文件回传工具后，插件把指定文件交给当前渠道的原生附件接口。插件不额外设置文件来源、创建时间、工作区边界、扩展名、内容、数量、大小或有效期规则；文件只需真实存在且可读取。渠道平台仍可能依据自身权限、配额、文件能力或账号等级拒绝发送，插件会按平台返回结果提示。
+模型调用文件回传工具后，插件把指定文件交给当前渠道的原生接口。图片会优先以原生图片消息呈现；渠道不支持或明确拒绝图片发送时自动回退为文件附件，发送结果不确定时不会补发文件造成重复消息。插件不额外设置文件来源、创建时间、工作区边界、扩展名、内容、数量、大小或有效期规则；文件只需真实存在且可读取。渠道平台仍可能依据自身权限、配额、文件能力或账号等级拒绝发送，插件会按平台返回结果提示。
 
 | 渠道 | 平台要求 |
 | --- | --- |

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@xmanrui/dsh-im",
-  "version": "1.4.0",
+  "version": "1.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@xmanrui/dsh-im",
-      "version": "1.4.0",
+      "version": "1.5.0",
       "license": "MIT",
       "dependencies": {
         "@tencent-connect/qqbot-connector": "1.2.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@xmanrui/dsh-im",
-  "version": "1.4.0",
+  "version": "1.5.0",
   "description": "把九种 IM 机器人和公网 AI Office 接入本机 DeepSeek Harness。 Connect nine IM channels and a public AI Office to a local DeepSeek Harness.",
   "keywords": [
     "deepseek-harness",