Query Audit for Pro users: Added a new Query Audit page to track and review executed queries, accessible only to Pro-tier subscribers. The UI is gated by entitlement checks and localized in English, Spanish, Japanese, and Chinese.
Web MCP npm bridge with browser authorization: Introduced a new MCP (Model Context Protocol) integration that enables secure, browser-based authorization flows for external tools. Includes dedicated /mcp/link/ API endpoints and a user-facing authorization page.

ClickHouse SSL connection fix: Resolved an issue where SSL connections to ClickHouse would fail due to missing protocol handling.
Schema-missing error fix: Corrected a schema initialization error in PostgreSQL and pgLite migrations.
Action execution stability: Fixed several runtime errors in action invocations across SQL Console, Copilot, Monitoring, Explorer, and Privileges UI components.

Unified action architecture: Refactored all web actions into a consistent domain-driven structure with standardized contracts, improved test coverage (including projection tests), and tighter schema validation.
Cross-platform tab action alignment: Unified tab-related actions (e.g., creation, switching, title updates) across UI, MCP, and Agent adapters — improving consistency and maintainability.
Audit log view enhancements: Updated the audit log UI with better formatting, code block rendering, and backend query logic improvements.

Codebase cleanup: Removed outdated release notes files (v0.19.4.md, v0.20.0.md) no longer needed for current documentation flow.
Modularization: Flattened and reorganized action implementations into domain-specific modules (e.g., ai/, tab/, connection/, query/) under lib/actions/server/domains/.

How is this guide?

v0.21.0

What's Changed