Summary

Port the existing RAG / Local Knowledge and vocational task-engine documentation from the current project into the upstream OpenMAIC docs site.

This is a docs-only PR. It adds the original multi-language guide pages for local knowledge RAG and vocational task generation, and links them from the docs navigation.

Related Issues

N/A

Changes

• Add existing Local Knowledge RAG guide pages:
  • local-knowledge-rag.mdx
  • local-knowledge-rag.zh-cn.mdx
  • local-knowledge-rag.zh-tw.mdx
  • local-knowledge-rag.ja.mdx
  • local-knowledge-rag.ru.mdx
  • local-knowledge-rag.ar.mdx
• Add existing vocational task-engine guide pages:
  • vocational-task-engine.mdx
  • vocational-task-engine.zh-cn.mdx
  • vocational-task-engine.zh-tw.mdx
  • vocational-task-engine.ja.mdx
  • vocational-task-engine.ru.mdx
  • vocational-task-engine.ar.mdx
• Update packages/docs/content/docs/meta.json so the new guide pages appear in the docs navigation.
• Update configuration docs across supported docs locales with the original knowledge-base / embedding environment-variable references.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactoring (no functional changes)
• CI/CD or build changes

Verification

Steps to reproduce / test

1. Run formatting check:
   pnpm check
2. Run lint:
   pnpm lint
3. Run TypeScript check:
   npx tsc --noEmit
4. Open the docs navigation and verify the Local Knowledge RAG and Vocational Task Engine pages are listed.

What you personally verified

• pnpm check passed.
• pnpm lint passed with existing warnings only and no errors.
• npx tsc --noEmit passed.
• Verified the branch contains docs-only changes: docs navigation, configuration docs, and the existing RAG / vocational guide pages.
• Did not run a full docs production build or attach screenshots.

Evidence

• CI passes (pnpm check && pnpm lint && npx tsc --noEmit)
• Manually tested locally
• Screenshots / recordings attached (if UI changes)

Local verification logs:

pnpm check
All matched files use Prettier code style!
pnpm lint
0 errors, existing warnings only
npx tsc --noEmit
passed

Checklist

• My code follows the project's coding style
• I have performed a self-review of my code
• I have added/updated documentation as needed
• My changes do not introduce new warnings