The eslint-metrics.json snapshot duplicated the violation counts already
enforced by eslint-budgets.json. Keeping it current added a CI drift check,
a pre-commit regenerate-and-flag step, and a standalone npm run lint:metrics
script, none of which caught anything the budget gate did not, yet all of
which failed noisily whenever the snapshot went stale. This drops the file
and that machinery while leaving eslint-budgets.json as the actual ratchet
gate
The lint job lived in test-litellm-ui-build.yml (workflow name "UI Build
Check") next to the build job, so its check surfaced as the misleading
"UI Build Check / frontend-lint" even though it does prettier, eslint, lint
budgets, and knip, not building. Split it into test-litellm-ui-lint.yml
(name "UI Lint") so the check reads "UI Lint / frontend-lint". The build
workflow keeps only build-ui; the lint job (including the knip step) moves
over unchanged.
Note for whoever manages branch protection: this renames the lint required-
check context from "UI Build Check / frontend-lint" to
"UI Lint / frontend-lint"; update the required-check entry so PRs don't strand.
