⚡ Bolt: Optimize load_framework_registry with lru_cache

[alinelena]

💡 What: Added an lru_cache to _load_framework_registry and exposed a safe copy.deepcopy() via the original load_framework_registry function.

🎯 Why: load_framework_registry() performs expensive file I/O and YAML parsing every time it is called. get_framework_config() calls it repeatedly when rendering framework badges on the frontend. Caching the file reading drastically reduces repeated read times while retaining copy.deepcopy preserves safe immutability.

📊 Impact: Time to call get_framework_config() 100 times reduced from 0.119s to 0.003s (a roughly 40x speedup in parsing overhead).

🔬 Measurement: Verified using uv run python3 -c "import timeit; setup = 'from ml_peg.app.utils.utils import get_framework_config'; code='get_framework_config(\"ml_peg\")'; print(timeit.timeit(code, setup=setup, number=100))" before and after changes. All pytest suites pass and no linting errors are present.

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PR created automatically by Jules for task 9748296984437581739 started by @alinelena

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