AgentDOC-W3: create a SQL agent for interacting with structured data.

[chenzhex]

Pull Request

Description

Brief description of the changes

Type of Change

• Feature addition
• Bug fix
• Performance optimization
• Code refactoring
• [ ✔] Documentation update
• Testing related
• Security fix

Impact Scope

• [✔ ] User interface
• API interface
• Database
• Configuration files
• Dependencies

Priority

• High - Release immediately
• Medium - Next version
• [✔ ] Low - Future version

Changes Made

• Change 1
• Change 2
• Change 3

Testing

• Unit tests pass
• Integration tests pass
• Manual testing completed
• Performance testing (if applicable)

Documentation

• Code comments added/updated
• README updated (if applicable)
• API documentation updated (if applicable)

Breaking Changes

• No breaking changes
• Breaking changes documented
• Migration guide provided

Related Issues

Closes #123, Related to #456

Additional Notes

Any additional information or context

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Release Notes Points

• User-visible changes
• Configuration change instructions
• Migration steps
• Known issues