Matches the Phase 1 design_system pattern the brief points at: own lint config,
own tests, own coverage gate enforced in CI.
The lint script was declared but unrunnable -- there was no eslint flat config,
and the build tsconfig excludes tests (correctly; they must not ship in dist/),
so type-aware linting had no project for them. Adds eslint.config.js and a
lint-only tsconfig that widens the include without emitting. Running it surfaced
one real defect: nth() interpolated a number into a template literal without
String(), which the consumers' configs would have flagged.
The gate also checks that the committed dist/ matches a fresh build. This is not
theoretical -- the check caught the stale dist/ produced by that very String()
fix on its first run. A stale dist/ in a tag ships old code to every consumer
with no error anywhere, which is the one failure mode this packaging choice
introduces. dist/ is excluded from the whitespace hooks: they would "fix"
generated output that the next build immediately reverts.
CI additionally re-runs the categorical ramp's constraint proof, so the palette
cannot regress silently either.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U4Rj3s7K2qzrLNgJqqPhno
