unify/dev unify/dev
commit a86d31565cea60b728199a6dbd149ee740df4746
Author: n.danilyuk <n.danilyuk@integrasources.com>
Date:   Mon Aug 3 11:25:26 2026 +0300

    build(vivado): add fallback for git hash when .git unavailable
    
    Added:
    - Graceful git hash fallback with placeholder value (zeros)
    - Git availability checks (executable and .git directory)
    - Error handling for git log failures
    - ::RP_ROOT_DIR capture in fsbl script
    
    Changed:
    - Git hash extraction now has proper error handling instead of failing on missing git
    - Applied to all 7 vivado build scripts (Z10, Z20, Z20_14, Z20_250, Z20_4, Z20_G2, Z20_ll)
    
    Fixed:
    - Build failures when .git unavailable (extracted from zip)
    - Typo: 'ser parameter' -> 'set parameter' in comments
