v0.3.0

A second module in the worker finds photos of the same place in your own library; photos can be
rotated in the app and the rotation saved to Immich.

Added

• Similar photos: the worker computes a vector of every photo with
  MegaLoc, a model made for recognizing places, and the
  app suggests where the most similar photos with a location were taken, grouped by place, with
  their thumbnails (green diamonds on the map). It runs automatically: first on the photos with a
  location, which are what it searches among, then on the photos without one. The search runs
  when a photo is opened, so it always includes the locations set since; it only looks in the
  library of the person who looks at the photo. The Library page shows how much of the index is
  built. It also works on a part of the photo. Settings: STEWARD_SIMILAR_MIN_CONFIDENCE,
  STEWARD_SIMILAR_WEAK_BELOW, STEWARD_SIMILAR_CONFIDENT_FROM, and
  STEWARD_SIMILAR_INCLUDE_ESTIMATED (whether locations set in the app count, on by default).
• Rotate a photo in the card with the buttons under it or the keys [ and ]: the photo, the
  full-size view and the part picker show it rotated, and modules started then get it rotated.
  Save rotation in Immich turns it there too, as an Immich edit (the original file is not
  changed, other edits stay); this needs the asset.edit.get, asset.edit.create and
  asset.edit.delete permissions, which keys created from now on have.
• When a photo is rotated or edited in Immich, the next sync notices its new previews, and the
  worker modules (GeoCLIP too) look at it again.

Changed

• The worker runs similar photos and GeoCLIP (STEWARD_WORKER_MODULES, default
  similar,geoclip); both run automatically (STEWARD_AUTO_MODULES, default geoclip,similar).
  The order of STEWARD_WORKER_MODULES is the priority of their background photos: the index
  of similar photos first by default. Photos started from a card still go first.
• STEWARD_WORKER_ONE_MODEL=true keeps one model in memory at a time, for machines short of
  memory. Otherwise both may be loaded at once, so the memory limit of the worker container is
  now 6 GB instead of 4 GB (STEWARD_WORKER_MEMORY_LIMIT).
• Each worker module has its own display thresholds; before, GeoCLIP's applied to all.
• Thumbnail addresses change with the previews, so the browser never shows old ones after a
  photo was rotated or edited.

Fixed

• Photos edited in Immich (rotated, cropped) are shown and given to the modules as Immich shows
  them. Before, the app got their images from before the edits.

Upgrade notes

• git pull is needed for the new compose.yaml (new settings, worker modules and memory
  limit). On the first start, the database migrations add the vectors table; on its first use,
  the worker downloads the MegaLoc model (0.9 GB).
• The first pass of similar photos over the library takes a while: about 0.3 to 0.6 seconds per
  photo on a server CPU (a day or two for 100,000 photos), about 0.1 seconds on an NVIDIA GPU.
  Until the photos with a location are in the index, similar photos has little to suggest.
• The vectors take about 17 KB per photo in the database (some 2 GB for 130,000 photos).
• To save rotations in Immich with a key created before this version, add the asset.edit.*
  permissions to it in Immich (Account Settings → API Keys).

Upgrading: git pull, then docker compose --profile worker pull and docker compose --profile worker up -d (without --profile worker if you run no worker). Workers on other computers need 0.3.0 too, to run similar photos: see docs/install.md.

Full changelog: v0.2.5...v0.3.0