- 6,113 instructions (74.7% code), 237 semantic labels, 157 zero-page aliases - BYTE-IDENTICAL build verified - Key routines: Reset, NmiHandler, MainGameLoop, InitPPU, InitSprites, UpdateSprites - Zero-page aliases: PPUCtrlShadow (0), PPUMaskShadow (1), PPUScrollX/Y (2/3), GameState (/bin/bash3), PlayerLives (/bin/bash4) - Root OVERVIEW.md updated to reflect Pass 2 completion