⚡ Bolt: [performance improvement] Optimize string splitting and eliminate intermediate Vec allocations in python.rs

[cloudesize67-cmd]

💡 What: Refactored logic to iterate over the stdout lines within xdk-build/src/python.rs. Replaced .split("\n") with character splitting .split('\n'). Eliminated intermediate Vecs through direct variable extraction and pattern matching. Added code comments.
🎯 Why: The original parsing logic mapped the string buffer into a Vec for each line and mapped each line iteration into a new Vec representing words separated by " ". Creating these arrays for each console output requires continuous memory allocations which are unnecessary since the elements are only directly accessed inside of a print statement block.
📊 Impact: Expected to yield minor memory reductions without breaking backwards compatibility. Iterators provide a near O(1) allocation structure that reduces memory overhead compared to Vec.
🔬 Measurement: Verified functionality using make check and make test-generator. Memory profiles can be tracked internally to measure allocations when running make python.

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PR created automatically by Jules for task 11866071552726772850 started by @cloudesize67-cmd

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