⚡ Bolt: [performance improvement] O(N) Pre-computed Single-pass Cross-Comparison in diffTests

[google-labs-jules]

💡 What: Replaced nested .filter() and .some() loops in diffTests inside cli/commands/diff.mjs and cli/validators/docs-diff.mjs with a single-pass cross-comparison using ES6 Sets and pre-computed basenames.

🎯 Why: The original algorithm used multiple passes of .filter() mapping over an array that called .some() pointing to matches() matching the glob pattern against a lazily computed basename. Because this occurred for every cross-reference verification of test files vs documentation, the string manipulation basename() repeated significantly across the Cartesian product N*M resulting in huge algorithmic bottlenecks.

📊 Impact: Reduces string operations and iterations by orders of magnitude for large test suites mapped against extensive documentation requirements.

🔬 Measurement: Verified with the native automated test suite mapping validation rules for documentation drift against code (node --test tests/*.test.mjs). No functional regressions introduced.

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PR created automatically by Jules for task 1406296234524706462 started by @raccioly

[google-labs-jules]

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