Fog entity cognitive delay rendering (D-059/D-060): sonar-style sound pings (3 concentric rings, 1.5s fade), unrecognized grey blobs with breathing pulse, D-033 color transition at 50% recognition progress, ±0.5 tile position drift. FogEntities node at z:950 between fog shader and InsertOverlay. Protocol v7 bump to match server PR #23 (pending_recognitions field). Wires dialogue box and fog entities into game loop with mock test data. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>