Add sample for 'Build an AI App with Claude Code that Calls Governed Backend APIs' guide.

[ShalkiWenushika]

Purpose

https://github.com/wso2-enterprise/apim-gtm/issues/329

Goals

Describe what solutions this feature or fix introduces to address the problems outlined above.

Approach

Describe how you are implementing the solutions. Include an animated GIF or screenshot if the change affects the UI. Include a link to a Markdown file or Google doc if the feature write-up is too long to paste here.

User stories

Summary of user stories addressed by this change>

Documentation

Link(s) to product documentation that addresses the changes of this PR. If no doc impact, enter “N/A” plus brief explanation of why there’s no doc impact

Automation tests

• Unit tests

  Code coverage information

• Integration tests

  Details about the test cases and coverage

Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines? yes/no
• Ran FindSecurityBugs plugin and verified report? yes/no
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets? yes/no

Samples

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Related PRs

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Test environment

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: c27c0d3d-762c-44cb-9049-003db9bf954d

📥 Commits

Reviewing files that changed from the base of the PR and between 623d8b4 and 7105a02.

📒 Files selected for processing (7)

• samples/ai-app-claude-code/CLAUDE.md
• samples/ai-app-claude-code/README.md
• samples/ai-app-claude-code/api_client.py
• samples/ai-app-claude-code/reading-list-api.yaml
• samples/ai-app-claude-code/setup.sh
• samples/ai-app-claude-code/teardown.sh
• samples/ai-app-claude-code/test.sh

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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