krypteia-quantica 0.1.0

Pure-Rust post-quantum cryptography: FIPS 203 ML-KEM, FIPS 204 ML-DSA, and FIPS 205 SLH-DSA. First-order arithmetic masking, shuffled NTT, FORS recompute-and-compare redundancy, constant-time rejection sampling. Targets embedded (no_std), STM32 M0/M4/M33, ESP32-C3 RISC-V. Zero runtime dependencies.