Pixel-precise wireframe and visual specification for the neural lattice overlay HUD (#314). Covers smuggler (social network view) and detective (investigation overlay) variants via lattice_profile parameter. Specifies: time display, entity markers, location labels, border arrows, commission grid, inventory icons, stance indicator, and all interaction states. Includes implementation notes for Stig (#263 time display). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>