MashuPack helps you select exact files or subsystems from a local codebase and compile them into one structured text file for browser AI workflows. It is built for planning, debugging, architecture review, and codebase understanding without messy copy-pasting or file-limit friction. MashuPack is for people who still use ChatGPT, Claude, and similar web UIs for long-form software planning, research, and debugging. When file-count limits or upload friction get in the way, a single structured text file is the one format every model can reliably accept. Instead of manually packing small groups of source files every time you want to discuss a subsystem or ask a high-level question about a codebase, MashuPack gives you a visual browser-based interface for curating the right slice of context and exporting it cleanly.