feat(versions): e2e fixtures, check_versions, docs

Fixtures gain an XMP-linked version (renamed file), a name-linked version
and an edit with a reference photo; e2e.sh counts with include_versions and
runs check_versions.py. CLAUDE.md documents the feature.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

dev/e2e/README.md

@@ -7,7 +7,7 @@ end-to-end and agent-driven UI testing of the SynologyFileViewer app.
 dev/e2e/e2e.sh up        # build + fixtures + reset + start; blocks until ingest is done
 dev/e2e/e2e.sh reset     # back to the pristine baseline (after tests mutate things)
 dev/e2e/e2e.sh stop
-dev/e2e/e2e.sh check     # every fixture's wall_clock + true_instant vs the manifest, and /photos/exif range edges
+dev/e2e/e2e.sh check     # every fixture's wall_clock + true_instant vs the manifest, /photos/exif range edges, photo versions
 ```
 
 Log in from the app with **server** `http://10.0.2.2:8090` (Android
@@ -56,6 +56,7 @@ way phones write containers (that wall, as a UTC `creation_time`).
 | `private` | `EXCLUDED_DIRS` — never indexed |
 | `Duplicates` | byte-identical copy of `2021/Paris Trip/IMG_1000.jpg` |
 | `Empty Album` | folder with no media |
+| `Versions/*` | photo versions (#191): an XMP-linked restoration (renamed file), a name-linked upscale (no XMP) and an edit with a reference photo, each under `aiedits/`; the manifest's `versions` block lists them. `e2e.sh check` verifies hiding, counts, display choice and the endpoints |
 
 "On This Day" is relative to the generation date — run
 `e2e.sh fixtures --force && e2e.sh reset` on a later day to keep memories