遗失源码还原

Rebuilds the 1990s Breakout game's logic in C and checks it against the original x86 program with differential tests and byte-exact compiled output.

Reconstructs a PC-98 DOS shooter's code, matching its 16-bit routines to readable C++ and the historical compiler's output.

An essay on rebuilding three Touhou games with agents: what verification looks like, where agents help, and how knowledge carries from one project to the next.