Optimize large folder image previews

{
  "backend": {
    "author": {
      "email": "drschwabe@fastmail.com",
      "name": "Derrick Schwabe",
      "time": 1789235820
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    "committer": {
      "email": "drschwabe@fastmail.com",
      "name": "Derrick Schwabe",
      "time": 1789236084
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    "manifest": "mmm-manifest:sha256:6448c578ae30a012f99444a225aa331463f9b25bc4280a2331a859ee32f2b873",
    "message": "Optimize large folder image previews",
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    "ref": "refs/heads/master",
    "summary": "Optimize large folder image previews",
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  "issuedAt": "2026-09-13T15:05:56.006Z",
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