[Feature request] Dice rolls as entropy source for seedphrase

Can we add the option to generate a seedphrase from dice rolls, with a SHA256('123456') with a minimum of 100 dice roll numbers inside to enforce high entropy, sanity checks if any single number occurs more often than 40% or has clear repeating pattern that also should be rejected.

No files, tests, or entry points are named. Start by locating the existing seedphrase generation and entropy-input paths, then verify how dice values are represented and validated. Done means generating a seedphrase from at least 100 dice-roll numbers, applying the requested SHA256 process, and rejecting the stated frequency or repeating-pattern cases.

Written by the indexing model from the issue text.