I have some points for optimisation:
First, the C-Scanner is a terrible lamp. Currently the character hold it to the side, so only the left wall gets really lighted. If the character would hold the left hand in front of the body it would be better.
Its hard to navigate on the ship, cause having the maps not really helps. I would appreciate if we see our position on the map. Also cartography sections without a map terminal would help. And last, it would be nice if the maps could be connected. For example if you click on an elevator, it automatically switch to the next map. Same if you click the entrance to another sector, it changes the map to the next location.
Also a nice idea would be a quick travel option between save rooms, if the way between them is clear.
Could you add a feature to detect the collection cards? Like, if you haven't them, they have an empty frame in the gallery where at least the card name and sector where its located is written. And if a journal message points out a location, it will be displayed there too.
Last point, the pathfinder module is useless since it shows the target directly, but that doesn't help since we never walk in a straight line. And the Echo hearing module is hard to see, maybe you could increase the size or brightness of the highlighting. Also equipping more than two modules would be helpful.
I hope some of the points inspire you, but even if not, you made a great game. Keep going.