⚡ Optimize redundant parameter parsing in projection

[edithatogo]

💡 What: Extract parameter and dependency dictionaries outside loops and store the result of parse_trace_key() to prevent parsing the same keys twice during iterations.

🎯 Why: node.get causes repetitive dict lookups and parse_trace_key redundantly parsed string keys multiple times per parameter/dependency. By caching the parsed values and pulling out the dict lookup, we save cpu cycles.

📊 Measured Improvement: Baseline (1000 iter): ~1.93s, Optimized (1000 iter): ~1.81s (approx ~6-7% improvement for 100-parameter mock trace nodes).

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PR created automatically by Jules for task 15472508936675622479 started by @edithatogo

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[amazon-q-developer]

This PR successfully optimizes the redundant parameter parsing in the _project_step function. The refactoring correctly eliminates duplicate calls to parse_trace_key() by caching parsed values and extracting dictionary/list lookups outside the loops. The logic is preserved and the implementation is sound with no defects identified.

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