⚡ Bolt: Remove os.system(chown) subprocess overhead in cidata_ingest.py

[WHYCRASH]

💡 What: Replaced the external os.system("chown -R 1000:1000 ...") subprocess call with native Python os.lchown() operations integrated directly into the existing os.walk directory traversal loop.

🎯 Why: To eliminate the overhead of spawning a subshell and invoking an external binary, while simultaneously removing a redundant recursive directory traversal. This also improves security by using lchown to prevent potential symlink attack vulnerabilities.

📊 Impact: Speeds up the secrets ingestion process during automated installations by avoiding multiple fork/exec overheads and halving the required disk I/O passes.

🔬 Measurement: Execute python3 -m pytest test_cidata_ingest.py to verify functionality remains intact. Execution time profile of cidata_ingest.py against large dummy directory trees will show reduced overhead.

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PR created automatically by Jules for task 11743771706568422362 started by @WHYCRASH

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