v0.6.0

Highlights

• Removed the pre-1.0 max_keyword public search control.
• ARK Web Search requests now omit max_keyword and use the upstream default.
• Updated CLI, MCP schema, validation, providers, documentation, and regression tests.

Verification

• 111 tests passed
• Ruff checks passed

This release includes a breaking public-interface change before 1.0.0.