Deepseek Harness 0.1.5-alpha.1

Original release notes

| English

Support dynamic system prompt updates without invalidating KV Cache when the configured model explicitly declares support. by @tianyicui
Add an experimental right Sidebar with tabs, split panes, and fullscreen. Chat file links and produced files can open in the Sidebar, and the Detail panel is removed. by @imccyu

Improve Web composer menu layering, placeholder text, and spacing. Present session statistics in two compact summaries for turn counts and speed, and detailed token usage and cache hits. by @Yifffan
Localize built-in slash command descriptions into Chinese and update them when the interface language changes, preserving open menus and queries. by @Kaige-Gao
Update the optional subagent plugins to Codex 0.153.4 and Claude Code 2.1.263. Explicit model settings remain unchanged; Codex uses its upstream default when no model is configured. by @koalazf99

Make the Send button follow the same busy-session setting as Enter, with labels that identify queue or steer delivery. by @lsdsjy
Prevent the model from resuming a goal paused by the user. Resuming requires a user action, and inactive goals show a resume control. by @mektpoy
Fix local images referenced by absolute POSIX paths in assistant messages, including screenshots outside registered workspaces. Failed loads show the alt text or original path. by @kermanx
Reject messages with neither non-whitespace text nor an attachment, and reject blank queue edits. Image-only and file-only messages remain supported. by @turtle1999
Report permission and I/O errors during project-root discovery instead of loading instructions from an ancestor project. by @turtle1999
Remove literal Markdown bold markers from collapsed thinking summaries while preserving the full expanded content. by @turtle1999
Fix the local compilation requirement introduced by fs-ext on macOS and Linux. by @imccyu

Session format V3: Upgrade supported historical sessions into new log files while preserving the originals, record system prompts in message history, and migrate legacy PTC events and code preset references. Custom log readers must adapt to V3; downgrade reads are not supported. by @tianyicui
Agent plugin API changes: Remove ctx.agent and require callers to pass the Agent explicitly. Correct ownership of continuable subagents so root-only scheduling excludes them. by @kermanx
Inbox API changes: Make Inbox a type-only interface instead of an exported runtime class. Plugins access pending messages through agent.inbox; hasPending and claim are no longer public API. by @kermanx

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