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Bug: BitmapFactory.decodeResource() returns null for vector drawables
(ic_tidal_arrow.xml). style.addImage(id, null) then NPE-crashed inside
MapLibre's native layer. The previous style URL was invalid so the
setStyle callback never fired and the bug was hidden; fixing the URL
in c7b42ab exposed it.
Fix: draw the VectorDrawable onto a Canvas to produce a real Bitmap
before handing it to MapLibre, matching the pattern already used in
MapFragment for the wind-arrow icon.
Also adds:
- MainActivitySmokeTest: Espresso test that launches MainActivity and
asserts it doesn't immediately crash — catches this class of bug.
- CI smoke-test job: runs the Espresso test on an API-30 emulator via
reactivecircus/android-emulator-runner after the build job passes.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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