dsh-auto: Adding Auto Approve Permission Presets for Model Review in DSH Web UI

dsh-auto is an MIT-licensed plugin for the DSH Web UI, designed to optimize the approval process. It introduces a constrained sub-Reviewer Agent to perform automated review before human confirmation, reducing manual intervention for repetitive or low-risk operations. The plugin supports only the Web UI. Its core mechanism is that when a session selects `Auto Approve`, a Reviewer running in a read-only sandbox is launched. The Reviewer is restricted to a whitelist of tools (such as read, grep), is prohibited from spawning further sub-agents, and has a step limit, enabling bounded read-only investigation and producing structured results. The host process makes the final decision based on these results: it rejects all critical risks, also rejects high risks that do not meet authorization conditions, and defaults to shutdown in case of failure. Installation requires adding the plugin via a command and restarting, with optional custom configuration.