Add TypeScript agent quickstart article for Azure DocumentDB

[Copilot]

Creates TypeScript agent article based on the Go agent reference, adapting the two-agent architecture (planner + synthesizer) for Node.js/LangChain ecosystem.

Files Added

• quickstart-agent-typescript.md - Complete quickstart guide covering:

  • Prerequisites and Azure resource requirements
  • Passwordless (Azure Identity) and API key authentication
  • Project structure and code walkthrough
  • Agent implementation using LangChain's framework
  • Tool definition with Zod schema validation
  • System prompts for planner and synthesizer agents

• typescript-agent-article-questions.md - Tracks unresolved items:

  • Missing media assets (architecture diagram, VS Code screenshot)
  • Recommendations for docs repository publication

Key Adaptations from Go Version

Aspect	Go	TypeScript
Framework	Custom implementation	LangChain agent framework
Tool Definition	Manual OpenAI function calling	tool() with Zod schemas
Type Validation	Go structs	TypeScript + Zod runtime validation
Vector Store	Custom MongoDB client	@langchain/azure-cosmosdb
Commands	go run cmd/...	npm run upload/start/cleanup

Code References

All code snippets reference ai/vector-search-agent-ts/:

• src/agent.ts - Agent orchestration
• src/vector-store.ts - Tool implementation
• src/utils/prompts.ts - System prompts
• src/utils/clients.ts - Azure client setup

Dependencies for Publication

Media assets need creation in MicrosoftDocs repository:

• media/quickstart-agent-typescript/agent-architecture-typescript.svg
• media/quickstart-agent-typescript/documentdb-view-data.png

Original prompt

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This section details on the original issue you should resolve

<issue_title>Create the TypeScript agent article</issue_title>
<issue_description>Create the markdown file for the TypeScript agent article.

1. Base the article on the existing Go article (https://github.com/MicrosoftDocs/azure-databases-docs/blob/main/articles/documentdb/quickstart-agent-go.md) for the agent for DocumentDB.
2. Any information or steps that are specific to Go needs to change for TypeScript. Use the current vector search TypeScript article for an understanding of the language specific steps. https://github.com/MicrosoftDocs/azure-databases-docs/blob/main/articles/documentdb/quickstart-nodejs-vector-search.md
3. Change the links to pull in the code files to the TS sample in this repo at ./ai/vector-search-typescript
4. Provide a list of any questions or issues you couldn't resolve.

The output is a markdown file. </issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Create the TypeScript agent article #34

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