feat: support runtime exclusive gateway - #183

Summary

Support Runtime exclusive gateway configuration in the Python AgentKit SDK/CLI, aligned with the TS implementation.

Changes

• Add Runtime gateway helpers for:
  • Shared / Exclusive normalization
  • create-time validation
  • immutable gateway binding checks
• Extend Runtime SDK models with:
  • GatewayMode
  • GatewayInstanceId
  • GatewayInstanceName
• Add CLI support:
  • agentkit config --runtime-gateway-mode/--runtime_gateway_mode
  • agentkit config --runtime-gateway-instance-id/--runtime_gateway_instance_id
  • agentkit runtime create --gateway-mode --gateway-instance-id
  • agentkit runtime list --gateway-mode --gateway-instance-id
• Prevent unsupported Runtime updates through runtime update --json:
  • gateway mode
  • gateway instance
  • network configuration
• Wire gateway config through cloud/hybrid lifecycle deployment.
• Update EN/CN CLI docs.
• Add focused unit tests for gateway validation, CLI behavior, config writing, and lifecycle runner payloads.

Validation

• uv build --wheel
• Installed the built wheel into a fresh venv and verified the real agentkit binary.
• Verified config/help/local validation behavior via CLI.
• Verified real cloud runtime list filtering with:
  • GatewayMode=Exclusive
  • GatewayInstanceId=g-daf7142bod1i4gosksu0
• Created a real Exclusive Runtime via Python CLI, released it to Ready, checked:
  • /ping = 200
  • /health = 200
• Deleted the smoke Runtime and confirmed it no longer exists.
• uv run --with pytest pytest tests/toolkit/test_runtime_gateway.py tests/toolkit/runners/test_ve_agentkit_lifecycle.py tests/toolkit/cli/test_cli_runtime_network_config.py tests/toolkit/cli/test_cli_config_cloud_provider_noninteractive.py
  • 41 passed
• uv run --with ruff ruff check --select F ...
  • passed
• git diff --check
  • passed