karti-ai
69607fbfe9
engine.ts used mulberry32 and engine.py used random.Random(seed). Same seed, different word — so every ?seed= permalink on the site would have shown a different puzzle than the recorded run it claimed to be replaying, and nobody would have noticed until someone checked one by hand. Both now derive the index from FNV-1a 32-bit over the decimal seed. A hash rather than a PRNG because there is no honest one-line JavaScript equivalent of Mersenne Twister, and this way there is nothing to keep in step: both sides compute the same integer from the same string. Math.imul on the JS side is load-bearing — a plain multiply overflows into a double and diverges after the first few bytes. Twelve seeds are pinned as a vector in both test suites. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019mt6sHQHEnEYrJZvoMCJSB