- Created _demo/embed/export/ with test for //export directive
- Test verifies symbols are exported with correct names (LPSPI2_IRQHandler, SysTick_Handler)
- Added CI workflow step to run the test
- Essential for embedded development where hardware requires specific symbol names
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Co-authored-by: luoliwoshang <51194195+luoliwoshang@users.noreply.github.com>
