hw-cola/dsh-dynamic-agents: DSH Web Dynamic Context Plugin

DSH Web provides an agent context rule management plugin that adds a docked control above the chat box. The plugin supports two levels of rule libraries, global and workspace, allowing users to select, add, or delete rules and inject them into the system prompt in real time. Once a session starts, the control is locked and must be unlocked to make changes. Installation requires the `dsh` and `pnpm` environments, and it has been tested to work with DSH `0.1.7-rc.1`.