dsh-wsl-media: Local Media and Document Processing Pipeline in WSL

The DSH plugin `dsh-wsl-media` (v0.2.1) integrates local media tools such as ffmpeg, whisper, and tesseract into a unified interface, addressing the issue of agents in WSL frequently switching toolchains when processing local files. It provides features including media probing, audio stream extraction, thumbnail generation, PDF text extraction, ASR, OCR, and metadata reading. Installation requires running `dsh plugin --profile web add github:173787247/dsh-wsl-media`, and file paths must remain within the allowed `allowRoots` scope. It supports use cases such as document digitization and video editing assistance.