Goal

Make the left Connections panel tree look and behave the same across PostgreSQL, MySQL, MongoDB, Redis, SQLite, and Extension/SDUI drivers.

Connection tiles already share _sidebarConnectionShell. Nested hierarchy still drifts (especially Extension/SDUI vs _PgTreeRow, and PG-only collapsible Databases).

Children

• Unify SDUI / native tree rows
• Databases folder collapse parity
• Tree indent + load/error tokens
• Extension tile Refresh + title weight
• SQLite subtitle + Redis DB context menu (smaller follow-ups)

Review

Canvas: connection-tree-parity-review (Dart MCP + code audit of connections_panel*.dart / sdui_tree_builder.dart).

Out of scope

• Changing driver-specific actions that are product features (e.g. Mongo “Create database”) — document or align separately
• Full rewrite of tree data loading