Isolated Docker builds copy native deps from host without broken submodule
.git pointers; CI init script skips network fetch when trees validate.
Co-authored-by: Cursor <cursoragent@cursor.com>
Submodule gitfile paths break when only ac-mobile-android is mounted as
/workspace; clone the mobile repo directly instead of submodule init.
Co-authored-by: Cursor <cursoragent@cursor.com>