dsh-skill-stats: DSH plugin to track how many times each skill is invoked

# Introduction When developing agents with DSH, you accumulate a growing number of skills: those used for early debugging, those tried once and abandoned, and those replaced by newer implementations. Over time, it becomes unclear which are actually being used. Deleting them risks needing them later, while keeping them turns them into 'zombie files'; relying on memory makes it difficult to judge. `dsh-skill-stats` solves this problem: by replaying historical session logs and real-time subscriptions, it accurately counts how many times each skill is invoked via the `skill` tool, helping you decide which skills are worth keeping. Below, we introduce its features, installation, and usage. # What is it? `dsh-skill-stats` is a read-only DSH statistics plugin, currently version 0.1.0, licensed under the MIT License. It tracks the invocation count for each skill. Data is collected from two channels: - Historical Replay: