Update Testing Outcomes and Status Documentation

[ManupaKDU]

Executed all backend (python3 test_runner.py) and frontend (npm run test src/) test cases. Appended findings, test statistics, missing test_runner.py mocks (ruamel limitations), and Docker BuildKit limitations into .zektopic/status.md and Jules/improvements.md.

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PR created automatically by Jules for task 2999407437789575403 started by @manupawickramasinghe

[google-labs-jules]

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[github-actions]

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