Expose field downloads and improve preview display

.gitattributes

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assets/previews/smoothed-v2/PHerc0009B-20250521125136-5ecd8d54ba04-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0009B-20250820154339-f23fd18e22ad-xy.provenance.json

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assets/previews/smoothed-v2/PHerc0009B-20260319104112-03255b40c268-xy.provenance.json

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+{
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assets/previews/smoothed-v2/PHerc0009B-20260319104112-c822efe9223b-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20250728140407-1dee6bde3f2f-xy.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20250728140407-2ba9424da6fa-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20250820105138-3eef69a5cc39-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20250820105138-708adf5bb66d-xy.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20250822062710-6a26b7a0117a-xy.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20250822062710-a9be0ac6e294-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20251107132835-a47051576c5d-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20251107132835-b7c2a7688e96-xy.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20251107135911-8259f1764c35-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20251107135911-b7b11d3c8178-xy.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20260319133050-25fe4714400c-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20260319133050-92b3bcf97d99-xy.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20260319133554-a40102363800-xy.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20260319133554-ea4a4bf4a650-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20260413113053-2c245565ed8f-xy.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20260413113053-3bf49129feac-xz.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20260930100252-3487fc5caf19-xz-display1920.provenance.json

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assets/previews/smoothed-v2/PHerc0139-20260930100252-e4bd61ac0731-xy.provenance.json

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+{
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