fix: verify published package exports

[ianalloway]

Summary

• Refreshes generated dist artifacts so the package entrypoint exports the public APIs already present in src/index.ts.
• Adds a dist verification smoke test that compares exported source functions against dist/index.js and dist/index.d.ts.
• Documents lint, Jest, and dist verification commands in the README.

Test Plan

• npm run lint
• npm test -- --runInBand
• npm run test:dist
• npm run prepublishOnly

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Normalize Poisson outcome probabilities

When callers use a mean that leaves non-trivial mass above maxGoals (for example poissonModel(5, 5) with the default 10), these returned probabilities are raw truncated sums, so winProb + drawProb + lossProb is 0.9728 instead of 1 and the derived fair odds are biased. Please either include/renormalize the tail probability or validate/choose maxGoals from the supplied lambdas before returning the probabilities.

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