v0.7.1

• Delete / Delete all features after History Marker show the red Delete icon again.
• Roll Timeline Marker Here shows its proper timeline-marker glyph instead of the roll-forward arrow.
• Long context-menu items wrap instead of stretching the menu across the whole panel.
• Added docs/ICONS.md documenting how Fusion's icon resources are resolved (Fusion vs Neutron trees, the macOS/Windows path split).