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Freeze saved-cut sources for companion delivery - #58

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ethanfel wants to merge 3 commits into
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sceneweaver-delivery-snapshots
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ethanfel wants to merge 3 commits into
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sceneweaver-delivery-snapshots

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A prepared saved cut currently follows mutable editorial, alternate metadata and lyric catalog state at assembly time. Add a read-only preparation API and Saved Delivery Source node that capture exact checkpoint lineage, picture artifact descriptors and caption cues; native Assemble verifies and uses that captured source after later edits.

The native browser helper preserves ComfyUI serialization and workflow metadata, replaces the selected assembly manifest input, and retains supported ancillary readers/VAE inputs. Unknown dependencies, connected scalar overrides and overwriting are rejected. Existing checkpoint/assembly behavior is unchanged without a snapshot. Each frozen assembly writes a source/settings record beside its video.

Validation: six native Python regression scripts passed, including real CPU FFmpeg assembly of a 48-frame synthetic video with audio, frozen ALT pixels, SRT captions and an exact source record. The new test also covers chapter offsets, branch identity, stale cuts, damaged media and preparation without project writes. Three native JS tests passed. SceneWeaver adapter/browser coverage is tracked in its repository.

This is a draft integration interface. Production GPU execution has not been tested. Processed sources, additional ancillary nodes and full portable dependency recovery remain separate work. The complete API, limitations and reproduction commands are in docs/SAVED_DELIVERY.md.

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