dsh-syllable: Syllable Estimation

The `dsh-syllable` plugin, provided by DeepSeek Harness, focuses on estimating syllable data in text. Maintained by uckkk and released under the MIT License, it is a pure Node.js implementation and a local script with no network dependencies. Users can install it via a terminal command, after which they can invoke its syllable estimation feature in DSH sessions, making it suitable for scenarios such as speech synthesis and linguistic analysis.