Refresh README/CONTRIBUTING and add AGENTS.md

[pietervw]

Summary

• Refresh README and CONTRIBUTING docs
• Add AGENTS.md and small C# demo polish

Test plan

• Skim README for accuracy
• Confirm C# demo still builds/runs

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: ce5608c3-ed22-46d4-9f78-e85d210c398e

📥 Commits

Reviewing files that changed from the base of the PR and between 62b5b61 and 48c9ce9.

📒 Files selected for processing (5)

• AGENTS.md
• CONTRIBUTING.md
• README.md
• csharp/Program.cs
• typescript/health.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/readme-and-agents

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[pietervw]

@codex review

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 43dcc27eb6

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[chatgpt-codex-connector]

Load .env in the TypeScript health sample

When a user sets a non-default NPI_API_BASE_URL only in typescript/.env and runs npx tsx health.ts as instructed, typescript/health.ts does not import dotenv/config, so it silently checks the default production host instead. Either add the import to that sample or exclude it from this loading claim.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Check in the heuristics required by AGENTS

In a fresh clone—or on any machine without the author's C:/git/personal-ai directory—the required heuristics cannot be opened, and a repo-wide search confirms that no copy is included here. Because the next line makes reading them a prerequisite to coding, contributors and agents cannot comply; use a repository-relative, committed document instead.

AGENTS.md reference: AGENTS.md:L4-L5

Useful? React with 👍 / 👎.