feat(lint): add type-aware parsing and validate script

[overbalance]

What problem is this solving?

Adds build validation to catch:

• Non-ES2022 JavaScript APIs (e.g., Set.prototype.intersection())
• Non-baseline Web APIs (e.g., Temporal)
• Package integrity issues (sourcemaps, exports)
• Bundle size regressions
• Accidental CommonJS in ESM output

Changes

scripts/validate.js

Runs 5 validation checks on built packages:

Check	Tool	What it catches
ES2022 API compliance	tsc with lib: ES2022	ES2024+ APIs like Set.intersection()
Web API baseline	eslint-plugin-baseline-js	Non-baseline DOM/browser APIs like Temporal
Package exports	publint + sourcemap validation	Broken exports, missing sourcemaps
Bundle size	gzip check	Fails if any package exceeds 6KB gzipped
Module integrity	grep for require()	CommonJS leaking into ESM output

eslint.dist.config.js

ESLint config for checking compiled output with baseline-js/use-baseline rule.

Other

• check-types depends on build in turbo (needed for cross-package type declarations)
• @opentelemetry/test-utils added as devDependency for instrumentation-user-action
• CI runs npm run validate after build

Testing

npm run build
npm run validate  # ~1.4s