I think better names would be:
1. Battle Stations
2. Alert
3. Guarded
4. Peace
Just having 4 might be better, and have mothballing and shore leave be the same as transit delay (IE a status effect from an order).
As for fighters and bombers, having a separate alert system for individual squadrons could work. A modern destroyer can launch a light helicopter in 45 minutes when at minimum alert level.
Since Aurora takes its inspiration from the wet navy an alternative would be:
Action (or Battle) stations. Ship is closed up and ready for immediate action.
Defence stations where 50% of weapons are manned and crews are sleeping at their weapons, but ship is not closed up. This could be maintained for a considerable time in WW2, eg time for convoys to pass through threat areas where attack could be expected.
Cruising stations. Ship is on passage weapons at nominal readiness.
Then if ship is in orbit of a planet it could be at 1 to several hours notice to space, systems powered down as appropriate.
However none of this would affect automated weapons ie CIWS. This could open a whole new research path!
Ian