JSON Schema Support in SDK Initialization

What: Pass JSON schemas at SDK initialization time for automatic structured output validation. How to use:

# Python SDK example
from claude_code import ClaudeCode

client = ClaudeCode()
response = client.run(
    prompt="Generate user data",
    json_schema={
        "type": "object",
        "properties": {
            "name": {"type": "string"},
            "age": {"type": "integer"}
        },
        "required": ["name", "age"]
    }
)

Details:

• Schema is validated using Ajv validator
• Automatically creates a StructuredOutput validation tool
• Validates all outputs against the schema throughout the session
• Works via both SDK initialization and CLI --json-schema flag
• Evidence: $D0() at line 2327, $G1() at line 470974 in v2.0.50