exif() returns every EXIF tag in the file (closes #156)

`photo.exif()` now returns every EXIF tag in the file, as the owner ruled, typed `ExifTags`: each tag keyed by name with `exifreader`'s `id`, `value`, `description` and `computed`. A tag with no name is keyed `undefined-` plus its number, and the embedded thumbnail's tags sit under `Thumbnail`. The thirteen typed methods stay, with the same names and types; each now picks its field from `exif()`'s tags. GPS latitude and longitude are worked out from the GPS tags and their reference tags, and a position with no reference tags gives neither. `backup-metadata --exif` output is unchanged. Model: opus-5-5 Co-authored-by: clawbot <sneak+clawbot@sneak.cloud>
2026-10-02 05:30:05 +02:00
parent 0c995a8c4f
commit e50d2a78c8
8 changed files with 368 additions and 124 deletions
@@ -25,6 +25,13 @@ declares one.

 # Completed Steps

+- 2026-10-02: `photo.exif()` returns every EXIF tag in the file as `ExifTags`,
+  keyed by tag name, each as exifreader decodes it, not only the thirteen common
+  fields (issue 156). The embedded thumbnail's tags are under `Thumbnail`,
+  without the thumbnail image. The thirteen typed methods stay, each picking its
+  field from the tags `exif()` returns, typed as in `PhotoExif`. The example
+  script's JSON files now carry every tag.
+
 - 2026-10-01: The content cache no longer looks for a live photo that an earlier
  version cached as one ZIP (issue 151). When the cache opens, a live photo's
  file that no JSON file names is now always left alone.