fix: time out Homebrew API fetches

[itzptk]

Summary

• add bounded Homebrew API request helpers that abort stalled fetches and stalled JSON response bodies
• apply API timeouts to package details and catalog refresh calls
• preserve stale details/catalog cache fallback when API calls time out

Verification

• npm run test:node -- electron/services/homebrew-service.test.ts
• npm run test:all
• npm run build
• independent pre-commit review passed after fixing response-body timeout coverage

Closes #4