Release 0.2609.2

This release expands database engine support and adds more control over database restarts and image versions.

Highlights:

• Added support for Valkey, ClickHouse, CouchDB, and MariaDB, with engine-specific configuration and connection details
• Added a database restart action with progress tracking and checks for conflicting operations
• Added an image-pinning action in database settings to retain the exact running image without restarting the database
• Improved database overview pages, connection information, and available-action feedback

Fixes:

• Prevented floating database image tags from silently selecting a different image during supported lifecycle operations
• Improved ClickHouse configuration for smaller CPU and memory allocations
• Improved database startup failure messages and version reporting

Notes:

• New database engines are enabled separately and appear in the creation form where available
• Image pinning preserves the current image; it does not upgrade the database
• ClickHouse exposes an HTTP client interface, CouchDB uses a single-node server, and MariaDB imports are not included