Library setup as the user described it: pick a folder, choose which RAW
types to look for, scan recursively.
dr-types::FormatFilter the tick-box selection, seeing through VFS
placeholder suffixes so a dehydrated CR2 still
matches as a CR2
dr-sync::scan recursive walk, Depth:1 per directory, pruning
unchanged subtrees where the backend propagates
directory ETags
Verified against nextcloud.tourolle.paris (34.0.2) on a real library:
browse root 32 entries, 98ms
scan PhotosRaw 17,185 RAW files in 334 directories, 34.1s
(7,836 CR2 + 9,349 DNG)
range read 262KB of a 21.5MB DNG in 119ms — 1.22% of the file,
and enough to read "Canon EOS 6D | ISO 100"
That last line is assumption A3 validated on real data. Cataloguing this
library by whole-file fetch would move roughly 370GB; the range path
moves a few MB.
Pruning is capability-gated rather than assumed: with per-entry ETags a
probe costs a request and proves nothing about children, so it is skipped
entirely. A test asserts zero probes in that case.
Still unresolved: /core/preview returns 400 for every parameter
combination tried, including on a JPEG the server reports as having a
preview. Not a request-shape bug — it fails identically bare. Recorded
rather than worked around; ARCH §6.7 already treats server previews as
opportunistic, so nothing depends on it.
Adds a read-only example that exercises the connector against a real
Nextcloud: Login Flow v2, PROPFIND listing, the Depth:0 ETag pruning
probe, a 256KB range GET, and a server preview request. No PUT, MOVE or
DELETE, so it cannot alter a live library.
Running it against nextcloud.tourolle.paris (34.0.2) surfaced a real API
flaw rather than an example bug. The crypto provider was installed in
NextcloudBackend::new, but authentication necessarily runs *before* a
backend exists — so any caller following the documented flow panicked on
the first client build. Every entry point now goes through
`http_client()`, which installs the provider first, and auth gains
`begin_default()` for callers with no client yet. A test builds a client
without a backend to keep the regression out.
Also populates RawImage::crop from rawler's crop_area/active_area and
re-phases the CFA pattern when the crop origin is odd — cropping to the
active area without that swaps red and blue.
Login Flow v2 confirmed working against the live server: the flow URL is
issued and the poll endpoint responds. The remaining checks need a
browser approval, so they run interactively.
88 tests passing.
dtourolle