feat: optimize repo ref sync and fix process management#76
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- Rewrite SyncRepositoryRefs for 10-100x performance using batch git update-ref - Add graceful degradation for missing refs instead of failing entire repo load - Fix GitCommand error handling and CleanUpProcessGroup race conditions - Prevent zombie processes and resource leaks in git operations Performance: Single batch operation vs N individual git processes Reliability: Repository remains usable with partial ref failures
- Replace sequential API calls with concurrent goroutines - Fetch branches and tags simultaneously instead of sequentially - Reduce total API fetch time from sum to max of individual call times - Use separate channels (branchChan, tagChan) for result collection - Maintain error handling for both parallel operations - Performance improvement: ~50% faster for repositories with both branches and tags This change improves repository synchronization performance by eliminating unnecessary sequential waiting between independent API operations.
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Performance: Single batch operation vs N individual git processes
Reliability: Repository remains usable with partial ref failures