feat(core,fuse,gui): places view from photo locations

Photos now know where they were taken. proton-drive-rs 0.7.0 reads the
Location from a photo's extended attributes, and the timeline refresh stores
it with the photo (schema v33). The migration marks every photo unresolved
once, so the next refresh backfills locations from node metadata without
downloading anything.

Towns are looked up offline: pdfs-core bundles GeoNames' cities15000 table,
trimmed by scripts/geonames-cities.py, and files each photo under the
nearest town within 50 km. The new PhotoPlaces and PlacePhotos requests list
the towns and page one town's photos.

The Photos page gets a third view, Places, with a card per town (newest
photo, town, country, count). A place opens in the gallery like an album.
Country names come translated from the iso-codes catalogs, now an optional
dependency. The About dialog credits GeoNames (CC BY 4.0).

README.md

@@ -75,6 +75,7 @@ pdfs-app            # the desktop app
 - **File Version History**: Every revision Proton Drive still holds for a file, from the browser's details pane (**Versions**) or `pdfs versions list|restore|save|rm`. Restoring is server-side — no re-upload — and an old version can be written out to a local file without touching the live one.
 - **Photo Favourites**: Star a photo in the lightbox, filter the gallery to favourites, or use `pdfs favorite <uid>` / `pdfs photos --favorites`.
 - **Photo Albums**: Browse your albums — including the ones shared with you — from the Albums view of the Photos page, or with `pdfs albums` / `pdfs album <uid>`. Album contents open in the same gallery as the timeline.
+- **Places**: The Places view of the Photos page groups photos by the town they were taken in, using the location stored with each photo. Towns are looked up offline in [GeoNames](https://www.geonames.org/) data (CC BY 4.0); install `iso-codes` for country names in your language.
 - **Human Verification (CAPTCHA) Recovery**: Detects sign-in gates (VPN/new IP challenges) and launches an embedded `WebKitWebView` dialog to safely complete the challenge, transparently retrying authentication with the earned token.
 - **Selective Sync (`.pdfsignore`)**: Keep build trees, dependency directories, and editor leftovers out of synced folders using gitignore-style rules.
 - **Data-Safe Offline Writes**: Durable scratch/staging files and a transactional pending queue preserve acknowledged writes across network failures and restarts.