docs(readme): add release guide for 0.1.1

[AdmilsonCossa]

Summary

• document retry defaults and zero-delay retry policy for fast local retries
• add a public comparison table for Promise, p-limit, p-map, RxJS, and Bottleneck
• add reproducible benchmark guidance tied to executable gates
• add a curated examples index and practical guide for choosing WorkIt primitives
• stabilize a circuit-breaker timing assertion that was sensitive to full-suite load

Verification

• npm run check:public-proof
• npm run check:headers
• npx vitest run tests/unit/run.test.js -t "run.circuitBreaker ignores stale closed-call"
• npm run test:coverage
• npm run verify