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Summary
This PR introduces Hybrid Mode, a new operation mode that combines the security of true entropy with the performance of pseudo-random number generators (PRNGs).
Motivation
While TrueEntropy provides cryptographically secure random numbers from real-world entropy sources, direct pool extraction is inherently slow (~60K ops/sec) due to:
SHA-256 hashing overhead
Thread synchronization
Pool depletion checks
Many use cases (simulations, games, UI effects) need millions of random numbers per second without requiring cryptographic-grade randomness for every single value.