snapgrep: In-Process Code Search Plugin for DSH

snapgrep is a MIT-licensed tool maintained by Owen718, designed specifically for Pi and DeepSeek Harness (DSH). It aims to accelerate code search through in-process trigram indexing, addressing latency accumulation caused by frequent disk reads. The solution eliminates the need for sidecar processes or daemons, thereby reducing costs associated with startup, synchronization, and debugging. Within DSH, it replaces the built-in `grep` and `glob` tools, ensuring search results are byte-for-byte consistent with ripgrep; for unsupported queries, the system fails closed rather than returning approximate results. For deployment, it does not compile source code but only downloads a runnable addon of approximately 1.2 MB, supporting macOS, Linux (x64/arm64), and