Sub-issue of #133. Depends on in-process FFmpeg wiring issue.
Scope
- Preset picker UI for grade/halation/aberration/weave effects (via @hance/core presets.ts: loadPreset, listPresetNames, exportLook, importLook).
- Live preview wired to the in-process pipeline.
- Export flow UI, using EXPORT_PRESETS/resolveExportPreset from @hance/core.
Sub-issue of #133. Depends on in-process FFmpeg wiring issue.
Scope