TrueGrowth/openspec/changes/add-creative-brief-workflow/tasks.md

1. Implementation

• 1.1 Add shared creative brief types, presets, formatter, and editor component.
• 1.2 Persist optional creative brief fields on ProductInfo and MVRecord with old-record compatibility.
• 1.3 Add the brief editor to MV and popular video script/config flows.
• 1.4 Inject creative brief context into storyboard, rewrite, frame, and video prompt builders.
• 1.5 Pass MV video style and aspect ratio into initial storyboard prompt generation.
• 1.6 Add focused unit tests for prompt builders and migration compatibility.
• 1.7 Run OpenSpec validation and targeted tests.
• 1.8 Merge purpose and scene presets into one professional creative brief control and inject it into prompt context.