Each file's JSON gains imageMetadata, what extractImageMetadata finds in
the stored original (for a live photo, its image), or the reason the
read failed in imageMetadataError; a failed read fails neither the file
nor the run. A video is not read. An original is read when the run
stores it or when its JSON has neither field; otherwise the field is
carried over from that JSON, so a run does not read every original
again. The hand-built JPEG fixtures move to test/exif-jpeg.ts so the
backup tests can use them.
Judgement call: an original with nothing to record gets imageMetadata
{} instead of no field, so it is not read again on every run.
Model: opus-5-5
`photo.exif()` and `quak backup-metadata --exif` now read EXIF through `exifreader`. HEIC/HEIF originals get EXIF, including a live photo's image, as do the other formats `exifreader` reads. It replaces `exif-reader` and the hand-written JPEG scan. `PhotoExif` is unchanged.
The `backup-metadata` dump now holds `exifreader`'s tag output, with unnamed tags keyed `undefined-` plus their number. GPS altitude without a reference counts as above sea level. A latitude or longitude without its hemisphere tag, an unreadable text tag, and a date the parser rejects each give no field.
Licence: `exifreader` is MPL-2.0, used unmodified.
Model: opus-5-5
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