i18n(ja): automated Crowdin translation import (part 09 of 13)

[minimalsm]

Summary

• Part 09 of 13 — ja translation import split from i18n: automated Crowdin translation import (ja) #17132
• 23 files

Context

Split from the original large import PR for easier review and independent merging.

[netlify]

✅ Deploy Preview for ethereumorg ready!

Name	Link
🔨 Latest commit	71ea800
🔍 Latest deploy log	https://app.netlify.com/projects/ethereumorg/deploys/6992fe342e9f22000833fbc6
😎 Deploy Preview	https://deploy-preview-17373.ethereum.it
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	7 paths audited Performance: 55 (no change from production) Accessibility: 94 (no change from production) Best Practices: 100 (no change from production) SEO: 100 (no change from production) PWA: 59 (no change from production) View the detailed breakdown and full score reports

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[minimalsm]

Translation Quality Review

Language: Japanese (ja)
Files Reviewed: 23
Quality Score: 95/100

Category Breakdown

Category	Status	Notes
Brand Names	✅ Good	Technical terms properly preserved (Solidity, Waffle, etc.)
Code Blocks	✅ Good	Code examples not translated, properly formatted
Markdown Syntax	✅ Good	No broken syntax detected
Frontmatter Tags	⚠️ Fixed	Tags were translated - restored to English
Technical Accuracy	✅ Good	Translation maintains technical precision

Issues Found & Fixed

1. Translated Tags in Frontmatter (11 files)
   • Tags in YAML frontmatter must remain in English for proper categorization
   • Fixed: "スマート契約" → "smart contracts", "Solidity" → "solidity", etc.
   • Files affected:
     • smart-contract-security-guidelines/index.md
     • stealth-addr/index.md
     • the-graph-fixing-web3-data-querying/index.md
     • token-integration-checklist/index.md
     • transfers-and-approval-of-erc-20-tokens-from-a-solidity-smart-contract/index.md
     • understand-the-erc-20-token-smart-contract/index.md
     • uniswap-v2-annotated-code/index.md
     • using-websockets/index.md
     • waffle-dynamic-mocking-and-testing-calls/index.md
     • waffle-test-simple-smart-contract/index.md
     • yellow-paper-evm/index.md

Summary

The Japanese translations are of high quality overall. The main issue was translated tags in frontmatter, which has been corrected. All technical terms, brand names, and code examples are properly handled. The translations maintain technical accuracy while being natural in Japanese.

Commit: fix(i18n): restore English tags in Japanese tutorial frontmatter

[wackerow]

Closing as duplicate - completed in batch translation job.