Lifecycle

Lifecycle

Lifecycle Overview

Example Flow

User drags handle
↓
Selection engine computes next range
↓
Validation runs
↓
Manager commits or rejects transition
↓
Hook projects latest manager state
↓
UI rerenders

Manager Acceptance Scenarios

1. Given duration=60, when setStartTime(20) and setEndTime(40), then selected duration is 20.
2. Given startTime=20 and endTime=40, when playback reaches 40, then playback pauses and seeks to 20.
3. Given startTime=50, when setEndTime(40), then validation fails and previous range remains unchanged.

Notes

• Events are capability contract signals, not UI orchestration commands.
• Behavioral outcomes are primary; events are secondary unless explicitly consumed as contract.