⚡ Bolt: [performance improvement] Avoid list materialization in AST traversal

[tachyon-beep]

💡 What: Updated _collect_return_paths and _assignment_callee in src/wardline/scanner/taint/variable_level.py to accept Iterable[ast.AST] instead of list[ast.AST] and passed the generators directly without materializing them via list(...).
🎯 Why: Eagerly materializing AST nodes into a list causes unnecessary memory allocations and is computationally slower than just iterating over the generator.
📊 Impact: Reduces overhead in static analysis processing time, traversing AST trees significantly faster since ast.iter_child_nodes produces a generator.
🔬 Measurement: Run static analysis or AST parsing tests, measuring the time taken.

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PR created automatically by Jules for task 5040652845660272685 started by @tachyon-beep

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-08-31T16:50:52.277067Z	c9c85d0	PR opened

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