dsh-token-usage-observer: Local Token Usage and Cost Statistics

dsh-token-usage-observer is a DeepSeek Harness plugin for aggregating, monitoring, and estimating local token usage and costs for DeepSeek Harness, Codex, and OpenCode. It provides a WebUI dashboard and a command-line tool, allows filtering data by dimensions such as source and time range, and automatically parses session names. It reads local logs in read-only mode, estimates costs using DeepSeek’s publicly available pricing by default, and helps developers effectively control costs.