dsh-live-preset-switch

When switching between agent presets in a DSH profile, users and agents often lack a consolidated reference for how turn-boundary live preset switching actually behaves—how it interacts with session-history derivation, the agentPreset.select guard, and the composer chip. dsh-live-preset-switch packages that knowledge into a single registerable Skill, so the guidance is available in-conversation without leaving the current workflow.

The bundle is deliberately minimal. It attaches a read-only Host adapter to the profile through the public ctx.skills.register() service contract, and the Skill body is a static string. At runtime the adapter performs no file, network, subprocess, or credential access. The cordis.patch.yml inserts exactly one entry and does not disable, replace, reorder, or shadow any official @deepseek-ai/* component. There are no runtime dependencies, no lifecycle scripts, and no native artifacts—installation is additive and uninstall leaves nothing behind. Importantly, the bundle carries guidance content only; the actual live-switching engine involves core-package changes that live on a fork branch pending upstream review, and the two should not be conflated.

It suits three audiences: end users who switch agent presets frequently and want to confirm turn-boundary behavior at a glance; developers authoring preset templates or workflow orchestrations who need precise switching semantics to reference; and ops or security reviewers who prefer the "purely additive, zero side-effect" audit cost when evaluating DSH ecosystem plugins.