dsh-preset-switcher

> [English](#english) | 中文

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<img width="656" height="350" alt="image" src="https://github.com/user-attachments/assets/c9ecdb1a-446e-48a8-825d-a3e495ff773b" />

概述

DSH Web 插件：在任何时候切换当前会话的代理预设（模式），包括对话已经开始之后 — 原生 UI 不允许这样做（"已开始的对话的代理预设已固定"）。

核心功能

• 顶部下拉菜单：会话标题操作栏中的「当前模式 ▾」按钮，列出所有预设（如 standard=标准模式、code=PTC 模式、minimal=极简模式、cordis=创造模式），用 ✓ 标记当前预设，点击即切换。
• 失效预设修复：如果会话记录的预设已被删除（自定义预设被移除），恢复将失败导致会话不可用。下拉菜单中的「修复失效模式会话」操作（及 repair API）会扫描所有会话日志并重写失效引用 — 最后一个 agent-preset/selected 事件，否则是标题 — 重置为默认预设，操作前自动备份日志并跳过活跃会话。切换未加载的会话时若引用失效也会自动修复。
• 受控路由：POST /preset-switch/api，参数 { method: 'list' | 'switch' | 'repair', sessionId, presetId, target? }（回环/可信主机限制，与 dsh-sounds 相同）。

工作原理

原生 API（agentPresets.select）通过空白会话检查来保护切换操作。本插件底层调用同一原子原语 — agentPresets.recompose(agent.ctx, presetId) — 将代理的作用域重新链接到目标预设的常驻挂载点。新组合在链接移动前确保完成，因此损坏的预设不会影响会话。成功后插件追加与代理记录相同的 agent-preset/selected 会话事件，使投影和标题标签同步更新。

限制：仅已加载的活跃会话可切换；子代理拥有的会话将被拒绝；新的工具集/人设从下一个模型步骤生效。

安装 / 更新

dsh plugin --profile web add C:\Users\Lenovo\.dsh\plugins\dsh-preset-switcher
# 重启 dsh web（profile 启动时合并 cordis.patch.yml）：
powershell -NoProfile -ExecutionPolicy Bypass -File scripts\restart-web.ps1

文件结构

许可证

MIT

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<a id="english"></a>

dsh-preset-switcher

> English | [中文](#概述)

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Overview

DSH web plugin: switch the current session's agent preset (mode) at any time, including after the conversation has already started — the stock UI refuses that ("a started conversation's agent preset is fixed").

Features

• Header dropdown: a "当前模式 ▾" button in the session header action row lists every preset (e.g. standard=标准模式, code=PTC 模式, minimal=极简模式, cordis=创造模式), marks the session's current one with ✓, and switches on click.
• Stale-preset repair: if a session's recorded preset was deleted (a custom preset removed), resume fails and the session becomes unusable. The dropdown's "修复失效模式会话" action (and repair API) scans every session log and rewrites stale references — the last agent-preset/selected event, else the header — to the default preset, backing up the log first and skipping live sessions. Switching a not-loaded session whose reference is stale auto-repairs it too.
• Fenced route: POST /preset-switch/api with { method: 'list' | 'switch' | 'repair', sessionId, presetId, target? } (loopback/trusted-host fence, same as dsh-sounds).

How it works

The stock API (agentPresets.select) guards its swap with a blank-session check. This plugin calls the same atomic primitive underneath — agentPresets.recompose(agent.ctx, presetId) — which re-links the agent's scope to the target preset's standing mount. The new composition is ensured before the link moves, so a broken preset leaves the session untouched. On success the plugin appends the same agent-preset/selected session event the proxy records, so projections and the header label follow.

Limits: only live (currently loaded) sessions can switch; subagent-owned sessions are refused; the new toolset/persona applies from the next model step.

Install / update

dsh plugin --profile web add C:\Users\Lenovo\.dsh\plugins\dsh-preset-switcher
# restart dsh web afterwards (profile boot merges cordis.patch.yml):
powershell -NoProfile -ExecutionPolicy Bypass -File scripts\restart-web.ps1

Layout

License

MIT