Commit Graph
263 Commits
Author SHA1 Message Date
dtourolleandClaude Opus 5 ff6c313bab Wrap the chip rows, so one six-choice parameter stops sizing the sidebar
The develop column asked for 482px. Every comment in it, a dozen of them,
describes it as a 280px column — and on a tablet it was taking 40% of the
screen from the photograph it exists to serve.

Measured rather than guessed, because none of it is visible in the source:
the column takes the widest width any panel declares, `AdjustPanel` wanted
482 of it, its rows wanted 458, and after the 44px scroll gutter the
widest single row was 414. That row is `film_sim`'s `format` — six film
formats from 35mm to 8x10, laid out by `Segmented` as six 64px chips in a
`HorizontalLayout` that cannot wrap. 6 x 64 + 5 x 6 = 414, exactly.

Nothing about that is the film simulation's fault. An operation declares
its parameters and the panel decides how to draw them (FR-DEV-3a), so a
node is entitled to offer six choices; it is the drawing that has to cope.
Any future operation with a five-choice enum would have done the same
thing, silently, to every screen in the application.

`ChipGrid` is the general answer: chips placed by index arithmetic inside
a plain `Rectangle`, wrapping at a column count, declaring a width that
depends on the columns rather than on the number of choices. `Segmented`
takes a `columns` property and uses it when asked — zero, one row however
many chips, stays the settings page's behaviour, where the page is
full-width and reading the alternatives side by side is the whole argument
for chips over a dropdown.

The generated enum rows and the curve-channel picker now wrap at three,
and the crop ratio chips use the shared grid instead of the private copy
of it they shipped with last week.

The column measures 351 now, down from 482, and what sets it is the mode
strip rather than a parameter — which is a control the user chose to have
on screen rather than an accident of one node's variant list.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 19:16:43 +02:00
dtourolleandClaude Opus 5 bd33487054 Say which axis each export dimension is, in the one place that renders
The box modes put two numeric fields one above the other, and on screen
they are two anonymous numbers: `TextRow` draws its label behind the
field rather than above it, so "Width" and "Height" never appear. That
fault is older than this feature — the storage panel's cache sizes have
the same missing labels, and the single "Size value" row always did — and
it belongs in its own change rather than being fixed under cover of this
one.

But one unlabelled number is survivable and two are not, so the axis goes
where the page does render it: the unit. It reads "3840 px wide" above
"2160 px high", which is the sentence the user is trying to write anyway.

The `label` bindings stay correct and stay where they are, so this
becomes redundant rather than wrong the day `TextRow` is fixed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:49:21 +02:00
dtourolleandClaude Opus 5 c38df01bf7 Hang the auto-crop off the slider's commit, not off the pointer passing over
The straighten auto-crop worked once and then stopped. It was keyed on
`PlainSlider::drag-changed`, whose name is a lie inherited from what it
forwards: `SliderTrack` defines `engaged` as `has-hover || claimed`, and
it has to — a `Flickable` withholds the press for 100ms, so hover is the
only signal that arrives in time to stand the scrolling ancestor down.
That is the right definition for the job it was written for and the wrong
one for this.

Keyed on hover, the correction fires when the pointer first crosses the
track — before anything has been dragged — and then does not fire again
for as long as the pointer stays on it, however many times the angle is
changed. Which is exactly what "it only works once" looks like.

`SliderTrack` already publishes the signal this wants. `committed` fires
on release, once per gesture, after the final `changed`, and its doc
comment says so in as many words. It was simply not forwarded through
`PlainSlider`, so it now is, and the geometry panel's callback is a
`committed(float)` rather than a `drag-changed(bool)`.

The angle needs no re-applying here: the track emits its last `changed`
before it commits, so the value is already in the graph by the time this
runs. What is left is the correction that has to happen exactly once.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:49:21 +02:00
dtourolleandClaude Opus 5 2c8768ac29 Lay the ratio chips out by hand, because Slint will not lay them out
The ratio chips shipped inside a `GridLayout` with `row` and `col`
computed from the repeater's index. It compiles. On screen every chip
piles into a single row that runs off the panel, and the terminal fills
with

    Internal error in Slint: RepeatedItemTree::grid_layout_input_data()
    not implemented

once per frame. A `for` inside a `GridLayout` is not supported, and
nothing says so until it is running.

A `HorizontalLayout` is not the answer either: six chips side by side
need over 400px, and this column's width is the largest width any panel
declares — so one row would widen every other panel in the application to
fit a control that is on screen only while cropping.

So the grid is arithmetic over the index inside a plain `Rectangle`. It
costs the layout engine nothing, it wraps a seventh ratio onto a third
row by itself, and — because a bare `Rectangle` declares no preferred
width — it takes the width the column already has instead of setting it.
The Portrait chip gets a container of its own for the same reason: a
`ChoiceChip` dropped straight into a `VerticalLayout` is stretched the
full width of the panel and reads as a button for the section rather than
as one more chip.

The three conditional pieces are also now individually-conditional
children of the one layout rather than a nested layout under a single
`if`, which is the convention `app.slint` and `masks.slint` already carry
notes about: a conditional nested layout under-reports its height here
and the panels below it draw on top of one another.

All of this was invisible in the source and obvious in a screenshot.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:49:20 +02:00
dtourolleandClaude Opus 5 52c655e6cf Turn the ratio lock with the photograph when it is turned
A quarter turn carries the crop with it — that is what makes turning a
photograph keep its composition rather than sliding the selection onto a
different part of the picture. So a rect locked to 16:9 comes out of the
turn at 9:16, of a frame whose axes have also swapped, and the lock was
left claiming landscape over a portrait rect. The next drag would then
snap it back upright and undo what the turn had just done.

The orientation switch now turns with it, on odd numbers of quarters.

`Original` is deliberately excluded, and getting that wrong flips it
twice: it is resolved against the framed size every time it is asked
for, and the turn has already swapped that frame's axes — so it has
turned by the time anything asks. `turns_with_the_frame` is the one
predicate that separates the two cases, with a test that pins both.

`CropAspect` arrived without tests of its own; it has them now, including
the round trip this fixes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:49:20 +02:00
dtourolleandClaude Opus 5 3bb68cff69 Export at an exact resolution, and offer the panels worth naming
Export sizing could bound an image but not fix it. Long edge, short edge
and percentage all preserve the aspect ratio by letting one dimension
fall where it may, which is right for most work and useless against a
display that accepts one resolution and rejects everything else — a
television's art mode, a digital frame, a wallpaper slot.

FR-EXP-3 has always listed both halves of the answer, and this adds them.
**Fit box** scales to fit inside a width and height, so nothing is thrown
away and the result is smaller than the box on one axis unless the crop
already matches it. **Fill box** scales to cover the box and cuts the
overhang off the middle, so the file is exactly the pixels asked for.

Fill is the only mode in the file that discards image data, so two things
about it are worth stating. The overhang comes off symmetrically: the
crop tool is where a photographer decides which part of a frame survives,
and this stage having an opinion of its own would fight it. And locking
the crop to the same ratio leaves nothing here to cut, which is the
workflow the two features are meant to be used in.

With upscaling off and a source too small to cover, a fill box keeps its
*shape* rather than falling back to the source's: exporting a 3:2 file
where 16:9 was asked for is silently wrong in exactly the way the mode
exists to prevent, so the box shrinks instead. The existing rule — clamp,
never fail — is otherwise unchanged.

Four panel sizes are offered as buttons beside the fields. Getting 3840 x
2160 by typing four digits twice is a step at which the mistake is
discovered after the upload rather than before it. They fill in the
numbers and nothing else, in particular not the fit/fill choice: both are
legitimate against a screen, and guessing would discard the edges of a
photograph for a user who wanted them. The list is panels rather than
platforms, because a screen has one exact pixel count for ever where
"what a photo site wants" would rot in the file.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:49:20 +02:00
dtourolleandClaude Opus 5 d9eb8faffd Crop away the corners a straighten exposed, once the slider is let go
Turning a rectangle inside its own bounds exposes its corners: there is no
source pixel out there, and the shader renders it black. Nothing in the
render prevents that, deliberately — a free angle does not change the
output size, which is what leaves the frame where the user put it while
the slider moves. Correct during the drag; four black wedges on the
finished photograph.

Letting go of the slider now pulls the crop inside the area the angle
leaves defined. `Framing::max_inscribed_crop` already computed that
bound and had no caller; this is the caller its doc comment described.

**Once, at the end of the gesture.** Applied per frame it would shrink
the crop on every step of the slider and never grow it back, so a user
who overshot to 20° and came back to 3° would be left with a crop
ratcheted down by the excursion rather than by the angle they settled on.
Per gesture it is bounded by the angles actually rested at, and undo steps
back through them.

**The crop is fitted into the bound, not replaced by it.** A crop placed
deliberately off-centre is a decision, and an automatic correction that
recentred it would undo the user's work to fix a problem they did not
have. `CropRect::fitted_into` scales only as far as the bound demands and
then slides the rect the shortest distance needed to be inside — so a
ratio locked in the crop panel survives the straighten too, since the
shape is never touched.

It returns the rect unchanged, bit for bit, when nothing needed to move.
That matters more than it looks: this runs on every release of the
slider, including releases at zero, and a rect that drifted by a rounding
error each time would be an edit recorded for no reason.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:49:19 +02:00
dtourolleandClaude Opus 5 e6ad906bc1 Let the crop be held to a ratio while it is dragged
A photographer cropping for a print, a phone wallpaper or a 16:9 frame is
not choosing four edges — they are choosing one edge and a known shape.
Free-dragging every corner made them do that arithmetic by eye on every
drag, and get it slightly wrong.

The panel now offers Free, Original, 1:1, 3:2, 4:3 and 16:9, with a
Portrait switch for the ones that have two orientations. Original follows
the frame rather than naming a number, so it stays right on the next
photograph from another body and after a quarter turn.

**The ratio is of output pixels, and the rect is not.** `CropRect` is
stored in fractions of a frame that is not itself square, so holding a
shape needs the frame's size — `ratio * height / width` of the frame.
Skipping that gives a "1:1" crop that is square only on a square
photograph, which is the one case nobody would test on, so the conversion
lives in `CropRect::with_aspect` where it is explained and pinned by a
test that asserts the fractions are *not* equal.

Two decisions worth recording:

The reshaped rect **grows** onto the ratio rather than shrinking onto it,
then scales down only as far as the frame's edge demands. Fitting inside
instead makes a one-axis drag do nothing at all — the other axis clamps
the first straight back, and the handle simply refuses to move.

The overlay now reports **which corner the drag is holding**, because
reshaping onto a ratio has to know which corner is nailed down and only
the handle that took the press knows that. A move reports no corner and
keeps its shape: reshaping about a centre would pull an over-moved rect
smaller instead of sliding it along the edge.

The lock lives with the window rather than the session. A `DevelopSession`
is per image, and cropping a set of frames to one shape is exactly when
the lock earns its place. It is not an edit and reaches no sidecar — what
is saved is the rectangle it produced.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:48:51 +02:00
dtourolleandClaude Opus 5 480c46c41a Quote the percentile the measurement can actually support
The before/after published a p99 ratio of 6.0x at 4K. It is not supported and
the correction is worth more than the number was.

The baseline run's `fit` rows spread 2.3x between median and 99th percentile
while every row of the after run spreads about 1.1x. A stage costing
`radius x pixels` has no reason to be bimodal, and `fit` is the memory-bound
configuration — it walks the whole 482 MB source on a stride where `1:1` reads
a contiguous window. Something else had the machine.

The merge brings in the cross-check that settles it: "Try every GPU, not only
the fastest one" measured the same baseline code on the same card and reports
4.67 ms p99 for M3 clarity fit at 2560x1600, against 10.40 ms here. Two
measurements of one thing differing by 2.2x mean the noisier one is wrong.

So both percentiles are now published and the p50 column is the claim: 2.8x at
4K rather than 6.0x. The p99 improvement is real and larger; this run cannot
say by how much, and says so.

What the caveat does not touch: every after figure is inside the 16 ms budget
with a p99 within 26% of its median at every size and both views, and clarity
against all-four is a within-run comparison.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:28:41 +02:00
dtourolle 30162e80df Merge branch 'master' into clarity-reduced-base
# Conflicts:
#	docs/traceability.md
2026-08-29 13:27:04 +02:00
dtourolleandClaude Opus 5 8b251b84a0 Record what the reduced base actually bought
TD-4 asked for the measurement as well as the change, and this is it: 25.05 ms
to 4.17 ms at 3840 x 2160, six times faster, with clarity no longer dominating
the neighbourhood stage it used to be 97% of.

Measured before and after on the same machine and the same adapter minutes
apart, baseline at the branch's merge-base, so the only variable is the change.
That adapter is not the RTX 3050 the rest of this document was measured on, so
the new table says to read it on its own rather than against the ones above —
the before/after is comparable, the absolute figures are not, and quietly
replacing the existing tables would have changed the instrument.

Also recorded: the declared halo is now quantised to multiples of the output
scale, because the 2-sigma truncation rounds on the reduced grid. 29 px becomes
28 at 1920x1200 and 38 becomes 40 at 2560x1600. It is inside what the cross-form
test holds — 0.03 stops of peak, 2% of reach — but it is a change in reach and
not only in cost, and a tile scheduler would be handed it. Better written down
now than found later as a seam.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:18:37 +02:00
dtourolleandClaude Opus 5 bff95e25ad Let clarity's base be computed where it is still fully determined
Clarity's Gaussian sigma is 1.2% of the frame's shorter edge, so its radius
is a property of the viewport: 52 render pixels at 4K, two separable passes
of 105 taps each over 8.3 M pixels. That measured 33.9 ms — seven times the
entire fused point chain, for one slider — and is docs/technical-debt.md TD-4.

A detail pass may now declare `output_scale`, and clarity's base is computed
on a grid a quarter the size on each axis.

The pass that combines needs the blur *and* the full-resolution colour, and a
colour that has been through a quarter-scale target is no longer full
resolution. So a scaled pass cannot simply join the ping-pong: there are two
chains now. The full-resolution one carries the colour and no scaled pass
touches it; the reduced one carries the base and reaches the combining pass
through a second binding as `reduced_at()`.

The reduce is a dispatch of its own rather than something the first blur half
does on the way past, and that is the whole difference between this and the
strided kernel the module documentation rules out. A stride samples an image
that is not band-limited and aliases high-frequency content down into the
base, which is then subtracted, and arrives in the output as mottling across
smooth gradients. This band-limits first and samples after. What is discarded
is content the base could not represent at any resolution, because a Gaussian
at sigma = 26 px holds nothing above one cycle per 26 px and the quarter-scale
grid carries one per 8 — so the reduced base is not an approximation of the
full-resolution one, it is the same function sampled where it is still
determined.

Which is also why the scale belongs to the band rather than to the stage.
Texture's sigma is a decade finer, so the reduce pass's own box would be wider
than the Gaussian it was prefiltering; texture never reduces. And clarity
steps 4 -> 2 -> 1 as sigma falls, because a quarter of a small sigma is not a
Gaussian either — the case that gives up is the one that was already cheap.

`radius` stays in each pass's own pixels and `ComposedDetail::radius` multiplies
it back up, so 13 reduced pixels at scale 4 still report the 52 render pixels a
tile would have to be grown by. The halo a scheduler sees does not move.

The halo tests pass unchanged, which was TD-4's stated bar; they render at
1024 px and so exercise the reduced path rather than stepping around it. Added
`crossing_the_reduction_threshold_does_not_change_the_picture`, because
nothing yet compared the reduced form against a *less* reduced one — every
other test measures one form against itself. It renders the same edit either
side of the 4 -> 2 step-down and holds the peak excursion to 0.03 stops and
the reach to 2% of the frame.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 13:12:29 +02:00
dtourolle 3b5d564495 Try every GPU, not only the fastest one
Build and test / Desktop (Linux) (push) Successful in 2h7m41s
Build and test / Layer separation (push) Successful in 46s
🐳 Android image / Build and push (push) Successful in 3s
Build and test / android-image (push) Successful in 3s
Traceability / Requirement traces (push) Successful in 41s
Build and test / Android (aarch64) (push) Successful in 21m1s
`request_adapter` with `HighPerformance` returns one adapter and no
second chance. That is right on a healthy machine and wrong on one with
a sick GPU, which is not rare: observed 2026-08-29 on a laptop whose
discrete card had hit an NVRM assertion failure and a fullchip reset.
The driver still advertised it, wgpu dutifully picked it as the highest
performing, and the process died on it — while a working integrated GPU
and a working external card sat unused in the same enumeration. A photo
editor that will not start because the *fastest* GPU is broken, on a
machine holding two that are not, is worse than a slow one.

So: enumerate, order by preference, take the first that yields a device.
The ordering reproduces what `HighPerformance` meant, so a healthy
machine picks what it always picked and pays one enumeration for it. A
CPU adapter sorts last rather than being excluded — software rendering
is a poor experience and a working one.

Which GPU to prefer is now a policy rather than an assumption, because
the fastest is not obviously the right one. A 24 MP frame is ~96 MB of
RGBA and every upload and export readback crosses PCIe on a discrete
card, where an integrated GPU shares memory and crosses nothing — and
does not empty a battery.

Measured before choosing a default, on this machine's Iris Xe against
its RX 5700 XT. The fused colour pass is within 1.5x, which is the
shape shared memory suits. The neighbourhood stage is 5-8x slower, and
that decides it: clarity at 1920x1200 costs 20 ms on the iGPU, over the
budget on its own at the smallest size tested. So `Performance` stays
the default and `Efficiency` is offered rather than chosen
(`DARKROOM_GPU=integrated`).

docs/frame-budget.md carries the table, and says what it does *not*
show: the harness renders from a resident texture and never uploads or
reads back, so the transfer cost an iGPU avoids appears in none of it.
Import, export and the thumbnail sweeps may well go the other way.

What this cannot fix: a GPU sick enough to accept `request_device` and
segfault afterwards, which arrives as a driver crash rather than an
error. It moves the boundary from "the preferred adapter is unusable" to
"unusable and dishonest about it".
2026-08-29 12:43:10 +02:00
dtourolleandClaude Opus 5 39c34d4e44 Say what actually counts as a rival, now that a name anchors too
assign's denominator is the identities the user has ruled on, and it
reads Cluster::person to find them. Master's "Let a name hold a group
together" widened what sets that field: a confirmation, a name, or an
ignore, where before it was a confirmation alone.

The behaviour is right either way — a named person is exactly the
identity a suggestion should be discounted against — but the module note
and faces.md §9.1 both said "a confirmation", which is now too narrow.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 12:32:31 +02:00
dtourolleandClaude Opus 5 da20d42d33 Merge master: pluggable storage, and a name that anchors
Conflicts were docs/traceability.md alone, and it is generated — so it
was regenerated rather than hand-merged. dr-face was untouched on the
other side; ui/dr-ui/src/faces.rs and identity_ui.rs auto-merged, the
first around recluster's anchoring and the second around load_faces.

Worth recording because the two branches met on the same problem from
different ends. Master's "Let a name hold a group together" is the fix
for the sixteen Catherines — fourteen of them empty — that this branch
found while measuring the library and reported without fixing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 12:30:01 +02:00
dtourolleandClaude Opus 5 b2250cc460 Measure a regroup on the tablet, not just on the desktop
The GPU question needed a number nobody had: how a regroup divides on
the hardware whose CPU is weakest. dr-face carries no weights and
touches no display, and dr-catalog's example needs only a catalog file,
so both run under adb shell against a copy of a real library.

On the same 18,143 faces — desktop against the tablet — scan 0.96s /
2.61s, agglomerate 1.69s / 2.16s, score 0.26s / 0.40s. The scan is half
the pass on the tablet and under a third on the desktop, because twenty
cores of AVX2 pull ahead of NEON much further than the merge engine's
single-threaded hashing does. So a GPU GEMM is worth roughly 2× a
regroup on the tablet and 1.5× here, and it is the tablet that should
decide whether it is built.

The two architectures agree exactly: the same 1,531,969 evidence pairs,
the same 2,518 groups holding the same 16,246 faces, the same
reliability table. That is a better check on the NEON kernel than the
unit test can be.

Two instruments, both read-only: the example now prints its phases, and
dr-face gains scan_bench, which needs no library at all and so can
answer "how fast is this machine" on a device with nothing on it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 12:16:48 +02:00
dtourolleandClaude Opus 5 f4395bd17c Run the face tests on the tablet, where the NEON kernel actually runs
The similarity scan picks its dot product per machine, and the NEON one
is the kernel that ships to the phone and the tablet — and the one a
desktop cargo test never executes. A wrong lane index or a mishandled
tail there is a silent wrong answer on exactly the devices nobody runs
the suite on, which is a poor place for the only untested code path.

dr-face carries no weights and touches no display, so its tests are a
plain ARM64 binary that runs under adb shell with nothing installed.
The script builds it against the SDK's newest NDK, pushes it, runs it
and cleans up. It checks for the device first, so a tablet that is not
plugged in costs a second rather than the two minutes it takes to
compile for it.

Not wired into CI, which has no device attached.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 12:02:03 +02:00
dtourolleandClaude Opus 5 8f596262b8 Record where a regroup's time actually goes
The §9 note said the scan was half a regroup and implied the
agglomeration was an irreducible sequential walk. Both halves of that
are now wrong, and the numbers are the point of the section.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 11:59:01 +02:00
dtourolleandClaude Opus 5 e596eb0657 Give the similarity scan the machine's SIMD, and its cache
The scan is O(n²) dot products and nothing else, so its speed is the
face subsystem's speed — and it was running at 0.7 flops per cycle.

Two separate faults, both measured over the reference 18,143-face
library on twenty cores. It walked the whole embedding array once per
row, ~336 GB of traffic, where a column tile that fits in L2 is read
once per tile of rows: 4.64s → 2.81s. And the workspace builds for
baseline x86-64 — SSE2, no FMA — into which the portable loop was not
being vectorised at all: 2.81s → 0.86s, 195 GFLOP/s.

So the dot product is now chosen per machine. AVX2 + FMA where
is_x86_feature_detected! finds it; NEON unconditionally on aarch64,
since Advanced SIMD is in that baseline and every Android device the app
builds for has it — with the explicit vfmaq, because LLVM will not fuse
a multiply and an add without being told to. The portable loop stays as
the definition the others are tested against, and
the_fastest_kernel_agrees_with_the_portable_one is the only check the
NEON path gets on a machine that is not aarch64.

Faces::embeddings is one flat buffer rather than a Vec per face: the
pointer chase defeated both the prefetcher and the tiling, and it is
also the layout a GPU pass would want.

Behaviour is unchanged and that is checked rather than asserted — the
same 1,531,969 pairs from all three kernels, and on the real library the
same 2,518 groups holding the same 16,246 faces with the same confidence
distribution. A full regroup there goes from 10.0s to 5.9s; the rest is
the agglomeration, which is a sequential heap walk and is where the next
look should go.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 11:33:15 +02:00
dtourolleandClaude Opus 5 ebb7d3cf5c Score a suggestion against the people the user has named
The number beside a suggestion was the mean calibrated probability
between the face and the rest of its group, which measures the wrong
thing twice. It punishes coverage: a person with two hundred faces over
fifteen years is *meant* to have members a given photograph is
orthogonal to, so a correct suggestion onto a well-photographed person
scored low for being well photographed. And it never asked who else the
face might be — a face matching Anna at 0.95 and nobody else, and one
matching Anna at 0.95 and her sister at 0.93, came out identical, when
the second is the only one worth the user's attention.

dr_face::assign answers both, and multiplies them: the mean of the best
ten calibrated matches into the identity (the old mean, capped, which is
what stops coverage counting against it), times that identity's share of
the evidence against every *named* rival.

Only named people compete, and per person rather than per group. Both
halves of that had to be measured on a real 18,000-face library rather
than reasoned about. Normalising across every group made the number
useless — median suggestion 21%, four in five under half — because
clustering leaves one person spread over many groups, so a face competed
against itself; and keying rivals by group left Catherine competing with
Catherine, median 39%. Per named person: median 99.5%.

Rivals are gathered below the merge threshold, down to even odds: a
named person matching at 0.6 will never be merged into but is exactly
the competition to discount for. That would be a second similarity scan,
the expensive half of regrouping a library, so cluster_scored scans once
at the looser floor and hands the merge engine the subset at or above
the threshold — pair for pair what it would have scanned for itself,
held to that by a test.

Leave-one-out over that library's 2,702 confirmations across 54 named
people: 99.33% of faces placed on the right person against the old
mean's 99.15%, and the number shown for the right person moves from a
median of 90.4% to 99.3%. It errs low — 100% correct wherever it states
80% or more — which is the safe direction, and docs/faces.md §9.1 says
plainly that the low bands are not calibrated.

The example that measures it comes too: this is a claim about a
library's numbers, and nobody should have to take it on faith.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 10:44:01 +02:00
dtourolle 4168d67cfa Do not push a catalog over one we could not read
`sync_catalog` is a read-modify-write over a file another device also
writes: take theirs, merge, push the union. It was shaped

    if let Ok(bytes) = backend.get(&RemoteId::Path(target), None).await {

which folds *every* failure into "there is no remote catalog" and carries
straight on to the upload. On a placeholder library the snapshot in
`.darkroom-derived/` is dehydrated like anything else, so the read failed
every time and each sync pushed our catalog over theirs unmerged —
taking the other device's collections and their members with it.

The same shape as the sidecar bug, and the same fix: a read that fails
for anything other than `NotFound` stops the upload and says why. An
unreadable or unopenable snapshot stops it too — "will not parse" is not
"is not there". This is what `NotFound` and `NotMaterialised` being
separate errors is *for*: one means ours is the whole truth, the other
means do not dare.

Shard downloads go through the same fetch-on-demand read. They logged
and skipped before, which on a library the client keeps dehydrated is
every shard, every pass, and a peer's thumbnails and faces silently
never arriving.

And `put` over a placeholder now replaces it rather than refusing.
Refusing was over-cautious of me: derived state lives inside the library
folder, so a folder the client had dehydrated could never be written to
again. An unconditional write replaces the whole file, so there is
nothing in the stub to keep — content first, then the placeholder, since
in a synced tree an absence is a deletion that propagates. `IfMatch`
still refuses, because a stub's validator describes the stub; `IfAbsent`
fails, because the file is there and only its content is not.
2026-08-29 10:36:26 +02:00
dtourolle 702d83c218 Measure the borrow, rather than asserting it bounds the disk
The claim that hydration-as-a-borrow makes peak disk the working set
rather than the library was so far an argument. `--example vfs_cycle`
runs it: 100 photographs of 25 MB, 90 dehydrated, a pass over all of
them through the real engine.

Peak 275 MB — the resting set plus one photograph — against 2,500 MB
had the pass simply fetched everything. Back to 250 MB afterwards, and
all ten files the user already kept still there, which is the half of
the contract that matters more.

Recorded in docs/storage.md §6.3 and ARCH §9.0a, because a bound argued
from a number nobody measured is one that gets quietly lost.
2026-08-29 09:57:53 +02:00
dtourolle 5768100816 Borrow the library to index it, and give it back
The passes that need every photograph's bytes — thumbnails, face
indexing — now borrow each one and release it at the end. On a
placeholder library that is the difference between peak disk being the
working set and being the whole library.

Including on cancellation, which was nearly missed: the face sweep
returns mid-loop when the user presses Stop, and without releasing there
the disk is spent and nothing is delivered for it.

`materialise` now answers whether *it* fetched the content. The pool used
to work that out by listing a file's parent directory — one listing per
file across a library — when the backend already had to `stat` it to
decide whether to ask. One syscall instead of a directory walk, and it
removes the bug class the tests found earlier: a file at the library root
has no `parent()`, so every one of them read as already-downloaded.

**Pinning is the retention control**, and it drives the model the catalog
already had rather than a second one. `tier_desired` is what the user
asked to keep hydrated, `pending_pins` is the resumable work list, and a
pinned collection is never dehydrated for the same reason it was never
evicted. It was in fact *broken* here before: `get` on a stub failed, and
the pin worker logged "one unreadable file must not abandon the whole
pin" and silently did nothing.

Pinned originals on such a library are recorded with `path = NULL`
(`Cache::record_in_place`) rather than copied under `originals/`. Two
reasons, and the second is the important one. A copy would hold every
pinned photograph twice, with the budget able to evict the half that was
not costing the disk. And `release` deletes the file a row names — so a
row that names none cannot delete anything, which puts the one
catastrophic operation out of reach by construction rather than by
remembering not to call it. Deleting a materialised file inside a synced
tree removes the photograph from the server and every other device.

Handing disk back is `spawn_dehydrate`, which asks the client.

Two gaps written down rather than papered over (docs/storage.md §7): a
hydrating pass cannot yet quote its cost, because a stub reports no size;
and the two sweeps hold separate pools, so a library indexed for both
fetches twice.
2026-08-29 09:57:53 +02:00
dtourolle c102ba9df2 Treat a placeholder as the photograph, not as a one-byte file
The folder connector was pointed at a Nextcloud VFS tree and got three
things wrong, the first of which loses work.

**A dehydrated sidecar read as absent.** `a.drsc` does not exist when the
client has dehydrated it — only `a.drsc.nextcloud` does — so `get` missed,
`.ok()` swallowed the `NotFound`, and the sidecar writer took that for
"there is no sidecar yet" and wrote a fresh document over the existing
one. Every edit another device had put there went with it. That function's
own doc comment calls this the exact loss the format's unknown-key
preservation exists to prevent.

**A stub was catalogued as a 1-byte image**, and ARCH §9.0 measured this
machine at 121,785 placeholders against 10,267 real files — so a folder
library on a synced tree was ~92% broken rows.

**Identity changed on hydration**, so downloading a photograph looked like
a delete and an add, orphaning its thumbnail and its face rows.

Entries now carry the photograph's own name and a `materialised` flag;
`get` on a stub returns the new `RemoteError::NotMaterialised`, which is
distinct from `NotFound` precisely because the sidecar writer must treat
them differently — it fetches the sidecar and merges, or leaves the entry
queued.

Hydration is a **borrow**. `BorrowPool` records what was on disk before it
asked, so `release_all` dehydrates only what a pass brought and leaves
what the user already had. Reference counted: the thumbnail pass and the
face pass meet on the same RAW, and without counting the first to finish
dehydrates the file the second is reading. A borrow against a plain folder
or a server does nothing, so a pass written for VFS runs everywhere.

Releasing means asking the client to dehydrate and never deleting: a
deletion inside a synced tree propagates to the server and removes the
photograph from every device.

Not a second backend — the capability is per *connection*, not per type,
since the same folder hydrates only while the client runs. The convention
arrives through a detector the registry supplies, so `dr-sync-folder`
still knows nothing about any client's protocol.

ARCH §9.0a records this as an amendment: finding 3 rejected hydration
because it costs 100× a range read, and that comparison assumed a
connector was available. A folder library has none.
2026-08-29 09:57:52 +02:00
dtourolle 64462e9fd3 Test the folder sign-in instead of trusting it
The whole of a folder library's sign-in lived inside a Slint callback,
which cannot run without a display server — so the one path that decides
whether a mistyped folder becomes a *stored* account had no test at all.
That failure is quiet and lasting: an account for a directory that is
not there skips the launch screen on the next start and reads as a
library that has lost its photographs.

`open_folder_library` is that logic, lifted out whole. Four tests: it
stores an account with no credential and reaches the keyring for
nothing, a typo is refused before anything is written, the messages read
as instructions because they go straight to the screen's error line, and
a file is not a library.
2026-08-29 09:57:52 +02:00
dtourolle cbe5c4fcde Measure the folder walk against a real tree, not a claim
The folder connector declares `LocalEtags`, which means the engine walks
the whole library on every scan with no pruning. That is the honest
capability, and the argument for it being affordable was so far an
assertion about `stat` versus `PROPFIND`.

`--example scan` runs the real path — `dr_sync::scan` over the connector,
then a ranged read of the kind the thumbnail worker makes. Read-only; it
never writes into the folder it is pointed at.

2,299 images across 233 directories in 137 ms, and 380 across 13 in
29 ms. Against 34.1 s for 17,185 RAWs over WebDAV *with* pruning
available. Recorded in docs/storage.md §5.2 and ARCH §8.4a, because a
capability trade-off argued from a number nobody measured is the kind
that gets quietly reversed later.
2026-08-29 09:57:52 +02:00
dtourolle f12aece07e Make storage pluggable, and prove it with a folder backend
`RemoteBackend` existed from the first release and bought nothing it was
designed for. Seven files in `dr-ui` constructed a `NextcloudBackend`
directly, an account *was* a server URL beside a DAV user id, the local
cache directory was named after a hostname, and the launch screen knew
that signing in meant a browser handshake. The trait was real; the seam
was documentation.

A trait over operations is only a quarter of it. Pluggable storage needs
four things, and this adds the other three:

- **Capabilities** — already there, and the reason the engine can drive
  two backends at the speed each actually runs at.
- **Configuration** — `dr_sync::Account`: where a library lives, in
  whatever form its connector addresses, with no server in it. Loads
  every existing config unchanged (`backend` defaults to `nextcloud`,
  `endpoint` is stored under its historical `server` key), and
  `Account::namespace()` reproduces the old catalog directory byte for
  byte, because changing it would abandon a catalog, its thumbnail
  shards, and the sidecars holding unsynced offline work.
- **Registration** — `BackendProvider` and `BackendRegistry`.
  `ui/dr-ui/src/remote.rs` is now the only file above `dr-sync` that
  names a connector.

`Connection` (an account plus an optional `Secret`) replaces the
credentials-and-user-id pair that was threaded through fifteen
signatures in an order that could be swapped. `Secret`'s inner string is
reachable only through `expose()` and its `Debug` prints `Secret(***)`,
so the indirect leak — a `{:?}` on anything holding one — no longer
compiles into a leak.

Nextcloud is unchanged and keeps every peculiarity: propagating ETags,
chunked upload v2, `oc:fileid`, the `oc:permissions` probe on a refused
PUT, the 423 retry classification, Login Flow v2. Those are what the
capability model exists to serve, not something to hide.

`dr-sync-folder` is the second connector: a local disk, a network mount,
an external drive, or a folder a Nextcloud client already syncs. No
account, no credential — the route that works where no secrets daemon
does. It declares `LocalEtags` rather than claiming propagation a POSIX
directory cannot provide, which costs nothing because 50k `stat` calls
are not 50k PROPFINDs. Identity is a path hash, not an inode: an inode
survives a rename but differs between devices and is reused after a
delete, so two machines would disagree about which photograph a
thumbnail belonged to. Re-deriving a thumbnail is a cost; showing the
wrong one is a bug.

docs/storage.md is the contract — the traits, the four steps to add a
backend, and what each connector declares. ARCH §8.0 and §8.4a, and
FR-NC-13, say why.
2026-08-29 09:57:52 +02:00
dtourolleandClaude Opus 5 c8e05831f4 Show the confidence, and say which curve it came from
FR-CULL-9 was read as "no fit, no number", so every library without 200
confirmed positive pairs showed "Confidence unavailable" on every
suggestion — which is every library, until enough confirmations exist to
fit one. The confirmations are made on this screen, ranked by the number
it was withholding, so the degraded state was also the permanent one.

There has always been a curve: Calibration::default is the reference
implementation's fitted MBF sigmoid, which is what clustering already
operates at. It is a published operating point, not an invention, and
what the requirement forbids is presenting it *as though it were
measured on this library*. So the percentage is shown, and the screen
says once, above the grid, where the curve came from.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-29 09:57:38 +02:00
dtourolleandClaude Opus 5 f41b3f6e8e Answer "what would the other device end up with" without the other device
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A tablet showed 200 of a person's 611 faces after syncing, and the obvious
suspects — that suggestions deliberately do not travel, that the cross-device
face match was too strict — were both wrong. Finding that out meant reading a
catalog on a release-signed Android build, which cannot be done.

So this stands the second device up locally: an empty catalog, given the images
a scan would have found, the shards adopted into it exactly as a sync does, and
the real catalog merged in as the remote. Then it counts, per person, against
what the source holds.

    person                     source     here
    Catherine                     611      611
    Me                            242      242
    Ian                           219      219

Which settled it: the merge carries everything, and the shortfall was transfer —
shards that never finished arriving. Worth keeping, because "did the sync lose
this or has it not got here yet" is a question that will come up again, and
guessing at it cost most of an evening.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-28 23:09:28 +02:00
dtourolleandClaude Opus 5 2c84aa1224 Write face shards the way the rest of the catalog writes
The face store was the one part of the catalog still on SQLite's default
rollback journal at `synchronous = FULL`. The catalog itself runs WAL at
`NORMAL` (`schema::configure`) and so does the thumbnail store; nothing decided
this one should differ, it was simply never set.

Measured on this project's own filesystem, that is **21.3 ms per commit against
0.05 ms** — four hundred times. And an export commits four times per
photograph: the shard's transaction, then three separate autocommitting writes
to the index. Ten thousand images is on the order of fourteen minutes spent
doing nothing but waiting for fsync, before a byte goes to the server. That is
the "checking faces…" that appeared to hang.

So: WAL and `synchronous = NORMAL`, matching the rest, and the three index
writes fold into one transaction. `NORMAL` is the same trade the catalog makes —
a shard is derived data, and losing the last commit to a power cut costs one
image re-exported.

WAL brings an obligation with it, because **a shard is uploaded by reading its
file**: the newest commits live in a `-wal` sidecar that no upload sends, so
without a checkpoint the server would receive a database missing exactly the
faces just written, and a peer would adopt it and see nothing wrong. `checkpoint`
folds the logs back in, with `TRUNCATE` rather than the default passive mode,
which gives up when a reader holds the log and would leave the same gap while
reporting success.

Two tests: that the store is in WAL like everything else, and — the one that
matters — that a checkpointed shard copied *without* its `-wal` still holds
every face. That second one fails without the checkpoint, which is how it was
confirmed to be testing something.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-28 23:08:10 +02:00
dtourolleandClaude Opus 5 cf614efa61 Send a re-indexed image's faces to the other devices
`export_to_shards` asked `store.contains(file_id)` and skipped anything the
shard store had already heard of. So an image was exported exactly once, and
re-indexing it updated the catalog and nothing else — every other device kept
the first answer for ever.

That is not hypothetical. This library was re-indexed after the detection floors
changed and crops were added, going from 1,807 faces to 15,194; the shard store
still held the original 1,807, written before any of it. Nothing the re-index
produced could reach another device.

The shard's `indexed` table now carries the catalog's own `indexed_at`, and the
export compares against it. A re-indexed image goes again; an unchanged one
still costs nothing. Copied from the catalog rather than stamped when the shard
is written, because a shard-local write time advances even when nothing changed
and could not answer the question.

The column is nullable so a shard written before it still reads: absent means
"cannot vouch for it", which forces one re-export and then settles.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-28 09:27:16 +02:00
dtourolleandClaude Opus 5 c7cdf7e5f0 Merge: face quality gates, and identity filters that combine
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Two things the People screen was missing.

Faces were being indexed at any size and any sharpness — 40 pixels on the box
and no blur gate at all — so most of what the library held was background
strangers and motion-blurred passers-by, and the blurred ones were quietly
bridging unrelated clusters. Both floors are now measured on the real library
with `face_index --quality` rather than guessed: 64 source pixels across the
aligned crop, and a contrast-invariant sharpness of 0.020.

And the grid could only ever be narrowed to one person, which cannot express
"the pictures the two of them are in together". The filter now holds a set with
a union/intersection mode, built a person at a time from the Identity screen and
taken apart chip by chip on the filter bar.

fmt, clippy -D warnings and the full workspace suite pass on the merge.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 22:23:37 +02:00
dtourolleandClaude Opus 5 a1790c3e67 Stop indexing faces too small or too blurred to be anyone
The library was storing faces at 52 source pixels and embedding whatever came
back. There was a size floor, but it was 40 pixels on the *bounding box*, and
there was no blur gate at all — so a subject walking through a half-second
exposure detected confidently, aligned cleanly, and produced a perfectly
ordinary-looking 512-vector. Nothing downstream can tell that apart from a real
face, and because blurs resemble each other more than they resemble the people
they were, they cluster together and weld unrelated identities into one group.

Two floors, both measured rather than guessed. `face_index --quality` runs the
detector over real proxies with both gates disabled and prints the distribution;
over 1,503 faces in 600 images of the reference library:

   percentile   crop px   sharpness
           1%        16      0.0006
          25%        23      0.0025
          50%        38      0.0071
          75%        76      0.0284
          99%       352      0.4282

The median face in a personal library is 38 pixels. Most of what the detector
finds is background: people across a square, a face on a poster, a stranger at
the next table. They are real detections and useless identifications.

**Size, on the crop rather than the box.** "At least 64x64" has to mean the
pixels the *embedder* sees, and the box is not that — the ArcFace template
reaches past it for forehead and chin, so the aligned crop spans roughly 1.3x
the box's shorter edge. The floor is therefore `min_source_px` on the aligned
crop, applied after the warp fixes the scale, and `min_face_px` drops to 48 as
what it always really was: a cheap pre-filter set low enough that it cannot
reject a face the real floor would have kept.

**Sharpness.** Variance of the Laplacian divided by the variance of the luma it
was taken over. The division is the part that matters: raw Laplacian variance
scales with contrast, so a threshold on it would quietly discard every backlit
portrait in the library. The ratio asks how much of the crop's variation is
edges rather than broad gradients, and is invariant to exposure.

What each pair removes, cumulatively, of everything the detector finds:

    min crop   min sharp   size cut   blur cut       kept
          64       0.000        70%         0%        30%
          64       0.010        70%         3%        27%
          64       0.020        70%         7%        23%
          80       0.010        76%         2%        21%

64 and 0.020. The size floor does most of the work, and the blur floor removing
only 7% on top of it is the point rather than a disappointment: at 64 pixels
most faces are already sharp, and what it takes out is the large-but-soft one —
precisely the face that would otherwise contribute a confident, wrong embedding.

The two gates are not independent and the doc comments say so: a face under 112
pixels was upsampled to reach the embedder, and upsampling invents no edges, so
small faces score low on sharpness even when the original was crisp. That is why
`--quality` prints them together.

**This will re-index.** Around 70% of what the current settings store falls below
the new floors — faces between 20 and 40 pixels that nobody could identify. The
People screen gets shorter and every group in it gets better.

66 dr-face tests pass, including that a blurred crop scores below a sharp one,
that halving the contrast does not move the score, and that an upsampled face
scores below the same face at full size.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 22:17:38 +02:00
dtourolle 329c388d30 Merge: each canvas overlay goes home to its own domain
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Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

# Conflicts:
#	docs/traceability.md
2026-08-27 21:43:31 +02:00
dtourolleandClaude Opus 5 4fa914cbb1 Send each canvas overlay home to its own domain
The crop rectangle, the gradient handles and the repair discs were 480
lines inside `canvas-area` in app.slint, while the panels that drive them
already lived in adjust.slint, masks.slint and spots.slint. spots.slint
even opens by describing "what is drawn over the photograph, and what a
finger can take hold of" -- which was not in it.

They stayed behind because all three are positioned against `shown-*`,
the fitted image rect the develop view derives because Slint does not
report it. That is now the interface rather than the obstacle: each
overlay is *given* that rect as its own bounds, so every position inside
is a plain fraction of `root.width`, and none of them reaches out to
`canvas-area` for an origin any more.

GradientHandles joins MaskPanel in masks.slint and SpotHandles joins
SpotPanel in spots.slint, each file now holding one domain's panel and
its canvas overlay together, matching masks_ui.rs and spots_ui.rs.
CropOverlay gets crop.slint of its own rather than growing adjust.slint.

Arithmetic is unchanged: the old fraction-x subtracted shown-x from a
coordinate measured relative to canvas-area, and the new one measures
from an origin that already is shown-x. The handles stay unconditional
rather than gaining an emptiness guard, so the repeater identity that
spots_ui::sync_handles warns about is untouched.

app.slint: 2834 -> 2490 lines. Verified by running the desktop app on a
photograph, with the crop overlay's guard temporarily forced open so all
three instantiate -- no binding loop, no panic.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 21:35:08 +02:00
dtourolleandClaude Opus 5 ffc9e1aea7 Give the develop view's chrome a file of its own
StatusBar and InfoPanel sat above AppWindow in app.slint, which read as
though they were part of the application shell. They are not: neither is
instantiated anywhere but the develop view, and the shell's actual job --
choosing which of the five screens is up -- is easier to follow without
two unrelated components standing in front of it.

Moved verbatim to develop.slint, matching src/develop.rs. No behaviour
change; app.slint loses 232 lines and gains one import.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 21:33:17 +02:00
dtourolleandClaude Opus 5 c10dca984f Regroup the library without stopping the window
Pressing Regroup on a real library did not come back. Clustering 1,813 faces is
the textbook agglomeration — compute every pairwise cosine, then repeatedly scan
all live group pairs, score each with average link, and merge the best — and the
scan is inside the loop. Each merge rescans every surviving pair, and each score
is recomputed from scratch over every cross pair. Some 1.6 million pair scores
per merge, some 700 merges to do.

Three changes, none of which alter the answer.

Only above-threshold pairs can ever matter. An average that reaches the
threshold must have at least one term at or above it, so two groups with no
qualifying pair between them can never merge — not now, and not after any
sequence of merges, since merging only adds terms. The new `neighbours` module
produces exactly that sparse list: 7,875 pairs rather than 1.6 million on the
reference library. It also means the n^2 matrix is never materialised, so memory
goes from O(n^2) to O(edges) — 2.5 GB to a few hundred KB at 25,000 faces.

Merges cannot cross components, so the connected components of that graph are
independent problems: four hundred small agglomerations instead of one large one.

Average link is additive — sum(A u B, C) = sum(A, C) + sum(B, C) — so a merged
group's scores follow by addition. Kept as running (sum, count) per adjacent
pair, a score costs one division instead of a nested loop, and a heap with lazy
invalidation replaces the rescan.

Measured on the reference library: 0.28s, release, for all 1,813 faces.

An exact ANN index was tried and removed, and neighbours.rs records why so it is
not rediscovered as a good idea. IVF with a triangle-inequality bound is exact
and prunes beautifully on synthetic clusters; on real embeddings it prunes
*nothing* — 946 of 946 cell pairs survive. Median pair angle is 88.5 degrees and
the merge threshold is 66.2, so the bound needs cells of radius under ~10
degrees, but two photographs of the same person sit 36-60 degrees apart. No
ball-based partition of a 512-d near-orthogonal space can be tight enough. So
the scan stayed exhaustive and got an unrolled dot product and its blocks spread
across cores instead.

Correctness is held by keeping the old implementation as an oracle: three tests
run both engines over the same population — plain, under co-occurrence and
anchor constraints, and with a size-weighted calibration — and assert the
clusters are identical. Determinism is asserted at a size where the threaded
path is in play.

62 tests pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 21:16:55 +02:00
dtourolle 28c046130c Merge branch 'master' into android-bundled-face-models 2026-08-27 20:22:42 +02:00
dtourolleandClaude Opus 5 7b4263ceb9 Bring master's display and parity work under the new checks
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Master moved sixteen commits while these fixes were being written — per-display
colour, the frame-budget measurement that decides FR-DSP-2, and a declared
node running without being compiled. Merged here rather than on master so the
conflicts are resolved where they can be tested.

Two files overlapped and neither was interesting. `lib.rs` gained `mod remote`
from this branch and `mod display_ui` from master, which git resolved on its
own. `docs/traceability.md` is generated, so it was regenerated from the merged
tree rather than hand-resolved — hand-editing a generated matrix produces one
that agrees with neither side. Coverage reads 59.9% (106/177), up from 55.4%,
entirely from master's tagging.

The check worth having run is `the_interface_names_no_operation` against
master's new `display_ui.rs` and its 195 changed lines of `develop.rs`: a new
UI module written without knowledge of this gate passes it. That is the
evidence the gate is not merely satisfiable by the code that shipped with it.

fmt clean, clippy clean at -D warnings, 2087 tests pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 20:10:56 +02:00
dtourolleandClaude Opus 5 371038614f Fetch the repairs first, or they never happen
The repair added in 051447b was appended to the work list:

    wanted.extend(repair);

Behind every un-indexed image in the library. On this library that is position
23,000-odd — roughly two hours of fetching before the first repair is reached,
which inside one session is indistinguishable from the feature not existing.
The log said it had found them and the screen stayed empty, which is the worst
combination of the two.

They go first now. There are a few hundred of them against tens of thousands of
un-indexed images, and they are precisely the images the People screen is
failing to draw at this moment — so the ordering costs nothing and is the
difference between the grid filling in within a minute and not filling in at
all.

A failure to build the un-indexed half no longer discards the repairs either:
the pass runs with whatever it has rather than returning empty.

Verified on the live catalog: 455 images hold faces, 251 already have a proxy
from the fixed sweep, and the remaining 204 are what now sits at the front of
the queue. The stored proxies check out — a valid JPEG at the large class,
49 KB — so the storing half of 051447b was already working.

471 tests pass, including one that the orphan is ordered ahead of the library.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 19:58:32 +02:00
dtourolleandClaude Opus 5 242374fd0f Let the interface hold a backend without knowing whose it is
`dr-sync` defines `RemoteBackend` and a capability model the engine adapts
to, so a second backend can be added without touching the code that uses
one. That boundary was documentation. Seven files in `dr-ui` constructed a
`NextcloudBackend` directly, ten functions took one by concrete type, and
exactly two call sites in the tree — both inside `dr-sync` itself — ever held
the trait object. A WebDAV or local-folder backend would have had a
well-written trait to implement and nowhere to go afterwards.

The change is smaller than the finding suggests, because the trait was
already right. Every method the UI has ever called on a backend — `get`,
`put`, `list`, `delete`, `create_dir`, `move_to` — was already on it, so
nothing had to be added and no behaviour moved. Ten signatures widened to
`&dyn RemoteBackend`, sixteen constructions became `remote::connect`, and
`remote.rs` is now the only file in the interface that names a connector.

`connect` returns `Result<Box<dyn RemoteBackend>, RemoteError>`. The error
type is `dr-sync`'s rather than the connector's, which is why every call site
kept its shape — the `match`, the `let Ok(..) else`, and
`.map_err(ScanFailure::local)?` all still read as they did.

One wrinkle worth recording: `&Box<dyn Trait>` does not reach `&dyn Trait` on
its own. The compiler reaches for unsizing, which wants
`Box<dyn RemoteBackend>: RemoteBackend`, and reports a confusing missing impl
rather than suggesting a deref. Twelve call sites therefore say `&*backend`,
and two say `let backend: &dyn RemoteBackend = &*backend` where a borrow is
shared across lanes.

What this does *not* do is abstract credentials. `AppCredentials` is an app
password from Login Flow v2 — a Nextcloud protocol, not a general notion of
authenticating to a remote — and seven files still name it. An OAuth token, a
bucket key pair and an app password have no useful common shape, so deciding
what an account is across backends before a second one exists would be a
confident guess. code-health.md CH-2 now records that as the remaining half,
and it should wait for the backend that forces it.

Verified: fmt clean, clippy clean at -D warnings, 2041 tests pass.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 19:51:23 +02:00
dtourolleandClaude Opus 5 051447bda6 Keep the proxy a found face will be cropped from
Every cell on the People screen read "no preview" while the sweep was happily
reporting 893 faces found. Both were true. Faces were being detected and stored
correctly; there was simply nothing left to draw them from.

A face is stored normalised and drawn by cropping the proxy it was found on —
`identity::decode_proxy` reads `FACE_TIER` out of the thumbnail store. The
fetching sweep fetched a preview, detected on it, wrote the faces and dropped
the pixels. So every face it found pointed at a proxy that had never been
stored, and the grid had nothing to cut.

Worse, that state could not repair itself: the image has its `face_index` row,
so it is not outstanding work and no later pass would look at it again.

Two fixes, and the first is nearly free. The sweep now keeps the proxy — it has
already paid the round trip and the decode, and the crop needs those same pixels
the moment the user opens the person. Kept **only where a face was found**:
two thirds of a personal library is landscapes and documents (docs/faces.md
§7a), those will never be cropped, and skipping them keeps this well clear of
the whole-library cost `SWEEP_THUMB_SIZE` deliberately avoids. The downscale to
the large class happens after detection, which is the last use of the full
buffer.

Second, the sweep now picks up images that have faces with no proxy, whatever
put them in that state — this bug, or an ordinary cache eviction, which would
have produced exactly the same empty grid. Re-running detection repairs it and
loses nothing: `record_detections` replaces rather than appends and carries the
user's confirmations across the replacement. That makes the screen
self-healing rather than dependent on nobody ever evicting a thumbnail.

The proxy is stored *before* the detections. A kill between the two then leaves
a proxy with no faces — which the next pass simply re-indexes — rather than
faces with no proxy, which is the state that cannot recover.

Note for the library already part way through a sweep: the 986 images indexed
before this will be picked up by the repair route on the next run.

470 tests pass, including one that a face whose proxy is gone becomes work again.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 19:35:12 +02:00
dtourolleandClaude Opus 5 5e4c7424ed Fail the build when the interface names an operation
FR-DEV-3a is the property the declarative pipeline rests on: a node in
`ops/` is one file because nothing in `ui/` has to learn about it. It was
true — all fifteen ids grepped across `ui/` yield one hit, a localisation
test — and it was held by discipline alone.

That is the wrong mechanism for it. The failure is silent and cumulative:
special-casing one operation to fix a layout problem is defensible on its
own, and by the fifth the panel names half the chain and "a new operation is
one file" has stopped being true without any single commit having broken it.
Nothing would have told us.

The ids are read from `ops/*.yaml` rather than listed, so a node added
tomorrow is covered without anyone remembering this file — the same reason
`traceability` parses its denominators from `requirements.md` at run time.

Two decisions worth recording, because both are the difference between a
test that holds and one that gets deleted:

**Only string literals count.** `texture`, `contrast` and `clarity` are also
ordinary graphics and English terms, and `texture` appears throughout `dr-ui`
meaning a GPU texture. Matching bare words would fail constantly for reasons
unrelated to the invariant.

**`#[cfg(test)]` items are exempt, and finding them needs more care than it
looks.** The first version cut each file at the first textual match of
`#[cfg(test)]`, which in `develop.rs` is a *doc comment discussing the
attribute* at line 969 — it read 18% of the most important file in the scan
and passed. It now matches the attribute only as a whole line and skips the
item by brace depth, and `MIN_SHIPPING_FRACTION` fails the test outright if
the scan ever swallows the file again. The dangerous failure here is not a
false alarm, which someone investigates; it is examining nothing and
reporting success.

Verified both ways: it passes on the tree, and an `"exposure"` planted at
develop.rs:3635 — past two `#[cfg(test)]` attributes, exactly where the
first version was blind — fails with the file, the line and the reason.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 19:33:20 +02:00
dtourolle fb1b44ce47 Merge branch 'worktree-agent-a1e5c8cb565255f5b' into master
# Conflicts:
#	docs/traceability.md
2026-08-27 19:21:10 +02:00
dtourolleandClaude Opus 5 8202c05d9d Format the zoom test the way the gate asks for it
Build and test / Desktop (Linux) (push) Successful in 1h22m24s
Build and test / Layer separation (push) Successful in 2m57s
Traceability / Requirement traces (push) Successful in 1m3s
🐳 Android image / Build and push (push) Successful in 2s
Build and test / android-image (push) Successful in 2s
Build and test / Android (aarch64) (push) Failing after 33m41s
Whitespace only. `cargo fmt --check` is a required step and the FR-DSP-5 test
arrived disagreeing with it — kept as its own commit so it can be skipped
wholesale rather than read for a change that matters.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 19:20:23 +02:00
dtourolleandClaude Opus 5 29da637fa2 Record what a contribution costs, and what would lower it
An audit of code quality and extensibility, written because the answer to
"how hard is it to add a feature here?" splits cleanly in two and the split
is not where it looks.

The develop pipeline is genuinely open: a new operation is one file in
`ops/`, and the claim that no code in `ui/` names an operation turns out to
be true — all fifteen ids grepped across every .rs and .slint file in `ui/`
yield one hit, a localisation test. `dr-ui` is the opposite: every feature
lands in `run()`, one of the `wire()` functions, and a root component
carrying 472 members, so contributors collide by construction.

Five findings, CH-1 to CH-5, each with a falsifiable "done when" in the
idiom technical-debt.md already uses. The distinction from that document is
deliberate and stated: it records compromises that were chosen and are
load-bearing until their criterion is met; this records friction nobody
chose. A section listing what must NOT be tidied comes before the findings
for the same reason.

CH-1 is not a new diagnosis. view-composition.md specified the fix on
2026-08-09, when `run()` was 500 lines; it is 1,810 now, the two view
booleans it described are five, and the conditional chains it predicted in
app.slint are five-term conjunctions. The entry references that spec rather
than restating it, and quantifies the cost of the delay.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-27 19:18:33 +02:00
dtourolleandClaude Opus 5 0cd3ef1b3f Run a node declaration without compiling it
`ops/*.yaml` plus `build.rs` has been the class-1 plugin format since the
declarative nodes landed — it was simply resolved at build time. Nothing about
a declaration requires the compiler: everything it produces is data plus a
WGSL string, and the composer already assembles WGSL at run time from whatever
operations are active. So this is not a new mechanism. It is the existing one,
loaded later (FR-PLG-2).

`DeclaredOp` implements `Operation` from an owned `Declaration` — one
interpreter over many declarations, where `build.rs` emits generated code per
node. The generated path stays, as FR-PLG-2 says it should: a generated
`match` is faster than an interpreted one, the built-ins' declared `tests:`
have to run under `cargo test`, and generated source is inspectable in a way
an interpreter's state is not.

**The reader is now one file, read by both.** `src/declared/decl.rs` and
`src/declared/expr.rs` are `#[path]`-included by `build.rs` as well as being
modules of the crate, and they produce a neutral `Declaration` that names no
Rust type. The build script's job is reduced to *rendering* that declaration
as Rust; `DeclaredOp` converts the same declaration into descriptors and
`Expr::eval` walks the same tree the renderer writes out. There is one
grammar, one set of validations and one set of error messages, so "a plugin is
the same kind of thing as a built-in" is structural rather than aspirational.

What remains genuinely written twice is the pair of backends — an arithmetic
node rendered as Rust here and evaluated there — and that is what the parity
test stands between. `tests/declared_parity.rs` parses every built-in
declaration at run time and asserts the composed WGSL is byte-for-byte what
the generated implementation produces, with the uniform block bit-for-bit
identical, at both ends of every parameter's range and at four interior
points; then again over the whole develop chain with the declared nodes
swapped in, which is what covers uniform slot ordering and helper
de-duplication between operations. A third test asserts the declared and
hand-written nodes partition `ops/` between them, so coverage cannot shrink
silently.

Bit-for-bit rather than within a tolerance, because a tolerance is where a
real divergence hides. The one thing that had to be got right for that to hold
is number literals: `expr::as_f32` rounds a decimal exactly once, through the
same shortest-round-trip text the compiler is handed, rather than rounding an
`f64` a second time.

Not in scope, and deliberately untagged: load-time WGSL validation
(FR-PLG-11), id namespacing, a plugin directory read at startup, and pass
nodes (FR-PLG-2a). Those are separate work, and tagging them from here would
be the overstatement the spec's own §7 warns about.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-27 19:08:34 +02:00
dtourolle 3b5bba62f1 Merge branch 'worktree-agent-aa9f4356c13893373' into master
# Conflicts:
#	docs/traceability.md
2026-08-27 19:08:32 +02:00
dtourolle 510d1a26cb Regenerate the traceability matrix
The platform layer was never scanned, so every FR-PLAT-* and NFR-PORT-* tag in
dr-plat was invisible. Coverage 51.4% -> 57.6%, almost all of it pre-existing
tags that were simply not being counted.
2026-08-27 19:08:23 +02:00
dtourolleandClaude Opus 5 2e6825ded0 Record what the measurement found, where the next person will look for it
Three places, because the finding has three audiences.

The display spec's §1 table said FR-DSP-3 was unmeasured and FR-DSP-5 untagged.
Both are now false, and §2's decision rule has fired. The body of §2 is left as
written with the verdict quoted above it: a plan overtaken by its own evidence
reads better in order than quietly edited into agreement with the outcome.

TD-4 is the stage that misses the budget. Clarity's kernel is a fraction of the
frame, so it reaches a 52-pixel radius at 4K and costs 34 ms — seven times the
entire fused chain, for one slider. It is debt rather than a bug because the
detail stage cannot yet write a target smaller than it reads, which
`local_contrast`'s own documentation has said since it was written. The entry
says plainly that tiles are the wrong tool for it, since that is exactly the
conclusion a reader arriving from ARCH §5.3 would otherwise draw.

TD-5 is the one nobody was looking for: composing the fused shader costs
2.8–5.2 ms of CPU per frame on a full chain, on the UI thread, which at
1920x1200 is more than the dispatch it precedes. The source depends only on the
graph's structure — what `structure_hash` already identifies and what does not
move during a drag — so the fix is the cache `AdjustPass` already keeps for
compiled pipelines, one level up.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-27 19:06:19 +02:00