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- 资源ToolRoman Numeral ConverterTwo-way Roman ↔ decimal converter. Validates canonical form (no double subtractive, no rank repetition over 3). Stamping a copyright year is easy; reading MMXXVI in someone else's headline is less so.
- 资源ToolRandom NumberCryptographically unbiased random integers via crypto.getRandomValues with rejection sampling. Bulk + unique modes. Math.random with a modulo is fine for dice; for anything else, you want true uniform sampling.