DeepSeek Harness Peak-Hour Automatic Model Switching Plugin

The `dsh-peak-avoidance` plugin aims to address high inference costs during DeepSeek Harness (DSH) peak periods. It uses a scheduled automatic switching mechanism to activate more cost-effective alternative models before peak periods and restore the official model afterward. The plugin supports dual routing, multiple time slots, and dynamic retrieval of model lists, while also providing manual control and safe recovery features. The author notes that the code has not been audited, and installation steps must be tested independently.