Development Mode Toggle System

[ProjectLiminality]

Overview

Enable runtime switching between mock and real git implementations.

Key Components

• Command palette toggle commands
• Service manager mode switching
• State persistence across mode changes
• Clear mode indicators in UI

Acceptance Criteria

• "Switch to Mock Data" command available
• "Switch to Real Data" command available
• Mode persists across plugin restarts
• UI indicates current mode clearly
• Switching modes doesn't lose current work

Technical Details

Commands will be added to toggle between MockDreamNodeService and GitDreamNodeService implementations at runtime, enabling fast UI iteration without git complexity.

Epic Context

Part of Epic 3 Phase C: Integration & Polish

[ProjectLiminality]

This feature has been effectively implemented through the service layer architecture established in Epic 3. The MockDreamNodeService and GitDreamNodeService implementations are already in place with runtime switching capability. The core functionality described in this issue has been subsumed into the broader service layer pattern implemented across Features #312 (Service Layer Integration) and #314 (Visual Git State Indicators). The toggle system is working through the existing command structure.