legacy-firmware-reversing: Black-box Legacy Firmware Reverse Engineering and Secure Flashing Agent Skill + DSH Plugin

`gladess1102/legacy-firmware-reversing` is an Agent Skill and DSH plugin that aggregates black-box reverse engineering experience from running 26 versions of real firmware on a 2004 Sharp MP-B300. The core methodology is broken down into five pillars: zero-brick protocol reverse engineering, reconstruction of private resource trees and full localization (zero image growth after injecting 6,763 GB2312 glyphs), DSP disassembly plus JIT emulation stubs, falsification over inference, and multi-agent anti-drift collaboration using `PROJECT-STATE.md` as the single source of truth. The plugin is installed via `dsh plugin --profile add` and registers an `fw-recon cordis` service for other plugins to consume; independent CLI tools `fw-recon check/diff/log` work regardless of whether DSH is present. License: MIT, current stars: 1.