Change: Add ~48 test files to reach a 20% test-to-source ratio

16 test files today against ~320 source files (Low (<20%))

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Change: Add a LICENSE file

Unlicensed code is legally unusable by anyone else

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Change: Split the largest files to bring average size under 5,000 bytes

Average is 8,946 bytes across 433 files; start with training.ts, page.tsx, services.ts

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Change: Add CONTRIBUTING.md

Tells collaborators how to work on the repo

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Change: Add a CHANGELOG

Lets users see what changed between versions

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Change: Push again — freshness decays the score

Last push 75 days ago; pushing within 7 days is worth 30 of activity's 100 points

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