Description

Create the sidebar for switching between mini-apps.

Acceptance Criteria

• Vertical sidebar on left side
• 4 navigation buttons (icons + labels):
  • Dataflow Manager
  • YAML Editor
  • Log Viewer
  • Telemetry Dashboard
• Active state highlighting
• Click switches content area
• Collapse/expand toggle (optional)

Dependencies

F-03, F-04

Blocks

Phase 2 apps