chore(deps): upgrade major deps and fix compat issues

[reaatech]

Summary

Combined upgrade of all major version bumps from Dependabot PRs (#5-#13), plus additional fixes to maintain compatibility.

Dependency upgrades

Package	From	To
commander	^12.1.0	^14.0.0
openai	^4.70.0	^6.35.0
pino	^9.0.0	^10.3.0
@opentelemetry/sdk-metrics	^1.25.0	^2.7.0
@opentelemetry/exporter-metrics-otlp-grpc	^0.52.0	^0.215.0
@opentelemetry/exporter-trace-otlp-grpc	^0.52.0	^0.215.0
@opentelemetry/sdk-node	^0.52.0	^0.215.0
typescript	^5.5.0	^6.0.0
eslint	^9.0.0	^10.2.0
vitest	^2.0.0	^4.1.0
@vitest/coverage-v8	^2.0.0	^4.1.0
lint-staged	^15.2.0	^16.4.0
@eslint/js (new)	—	^10.0.0

Compatibility fixes

• OTLP exporters bumped to 0.215 to match @opentelemetry/sdk-metrics v2
• TS6: added ignoreDeprecations: "6.0" for baseUrl
• ESLint 10: installed @eslint/js (no longer bundled)
• ESLint 10: preserved caught error causes for preserve-caught-error rule
• ESLint 10: removed useless token init for no-useless-assignment rule
• Vitest 4: removed deprecated poolOptions from configs

Verification

• tsc --noEmit passes
• ESLint passes
• 204/204 tests pass
• npm run build succeeds