⚡ Bolt: Cache section header alias lookups

[zrt219]

💡 What: Added @functools.lru_cache(maxsize=None) to _alias_lookups in openmed.clinical.sections.detect to cache the language-specific alias dictionary building.
🎯 Why: _alias_lookups was being called for every non-empty line of clinical text, causing a complete rebuild of the alias dictionary each time, drastically slowing down section detection.
📊 Impact: Reduces section detection time for long documents by a large margin (e.g., from ~5.0s to ~0.19s for a 1000-section benchmark).
🔬 Measurement: Run the internal clinical tests (uv run pytest tests/unit/clinical) and a simple benchmark to verify the speedup for repetitive lines.

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PR created automatically by Jules for task 2789480566848033710 started by @zrt219

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Project	Deployment	Actions	Updated (UTC)
zrt-bionemo	Ready	Preview, Comment	Jul 24, 2026 5:39pm

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