Google Play recommends landscape configuration

[alinnman]

Title: Support landscape orientation for tablets/foldables (Android 16+)

Description:
Google Play Console recommends removing portrait-only orientation lock to support large screens (tablets, foldables) in Android 16+.

Current state:

• App is locked to portrait orientation in buildozer.spec
• Layout was tested in landscape during development but didn't work well
• Works perfectly in portrait mode

Why portrait makes sense:

• Celestial navigation with sextant is naturally a portrait activity
• Current UI is optimized for vertical layout
• We can assume users will accept portrait orientation (?)

What needs to be done:

• Review Kivy layout components for landscape compatibility
• Test FontAwareConfig behavior in landscape
• Redesign input forms to work in both orientations
• Test on various tablet sizes
• Consider if landscape is even necessary for this use case

Priority: Low
Labels: enhancement, android, ui

[alinnman]

I am not sure yet whether this is a blocker for publishing on Google Play. Will need to examine this.
Note however that portrait orientation is the "default" for handling the app, and landscape will be considered difficult due to the large data input form.