Commit Graph
357 Commits
Author SHA1 Message Date
dtourolle df741a8a49 Let one mask be built from more than one selection, and paint into it
A mask the model draws arrives approximately right — stopping inside a
shoulder, leaking into the hair — and FR-DEV-3's edge controls move the
*whole* boundary, so no value of feather or dilation fixes two errors that
go opposite ways. What fixes them is a second selection joined to the first,
and a layer that held exactly one source had nowhere to put one. The brush
the core has had all along was reachable from no control in the application.

A layer is now an ordered list of parts. Each names a source and how it
joins the mask before it — added to it, or taken out of it — and carries its
own edge treatment, because a model's soft coverage and a stroke painted
where it stopped short do not want the same feather. Invert and opacity stay
on the layer, where the composed shader already reads them.

The sidecar grows `[part]` blocks and nothing else. A layer of one part
writes exactly the bytes it always did; a mask block with no part blocks
after it reads back as one part; and a stroke, a join or a source this build
cannot read costs that part rather than the layer. So every sidecar in every
library still parses to the edit it always was.

On the device the parts fold into the layer's one slice, so eight layers
still cost eight channels: union is a `max` blend and subtraction is the
erase blend the brush already used. A part is drawn into a scratch texture
before it is joined, and that is not incidental — an erase stroke means a
hole in *that part*, not a hole in the mask, and drawn straight onto the
accumulator it would punch through the subject underneath. A layer of one
part skips all of it and takes the path it always took.

In the interface: a part list under the selected layer with a chip saying
which way each joins, Add and Subtract beside it, a Select/Paint/Erase strip
with the brush's size, hardness and flow, and a drag on the photograph that
paints. Pressing Paint on a mask that cannot hold a stroke joins a part that
can, rather than explaining that a subject is not a brush. A whole stroke is
one step in the history.

The edge controls now shape the part that is selected rather than the layer,
which is the one behaviour change to an existing control: with a correction
selected, the feather slider softens the correction and leaves the model's
mask alone.
2026-09-07 20:00:40 +02:00
dtourolle bac5801618 Ask which collections a selection is filed in, and how much of it
`collections_for_image` answers this for one photograph and has no
counts, which is enough to badge a cell and not enough to offer a
removal: with forty selected and three of them in "Iceland", a sheet
that says only "Iceland" invites the user to take all forty out of a
collection thirty-seven were never in. `membership_of` returns the
count alongside the name so the row can say "3 of 40".

Chunked over the image list rather than one `IN (...)`, because the
list is a selection and a select-all makes it as large as the library —
past SQLite's bound-parameter cap on exactly the gesture most likely to
produce it. Counts are summed across chunks, so the answer is the one
the unchunked query would have given.

Smart collections are excluded by construction: they have no member
rows, so there is nothing a removal could do.
2026-09-07 19:59:44 +02:00
dtourolle af89433aee Offer the lens profile as a tick box, since applying it silently reads as absent
The develop panel's Optics group is three manual sliders: distortion, chromatic
aberration and lens vignetting. The automatic correction was already there — the
file's EXIF lens is matched against the bundled Lensfun database on open and the
coefficients are fanned out to all three — but nothing in the interface said so
except a line of grey text under the camera reading "· corrected", and there was
no way to decline it. From the outside that is indistinguishable from the
feature not existing, which is how it was read.

`dr-lens` states the rule this breaks: an automatic correction that silently
does nothing is worse than one the user can see is unavailable. The caption
satisfied the letter of it and not the point — a photographer looking for
"apply the lens profile" found three sliders and no switch.

So the profile is now a control. It is a capability rather than a flag on the
session, because everything a photographer sets travels one road: the capability
list feeds the generated panel, `Preset` captures it, the sidecar stores it and
the undo stack replays it. A bool on the side would have needed adding to each
of those four by hand and would have been forgotten in at least one — which is
exactly how the mask stack came to be missing from the history.

It is on by default, which is what `switch_on` is for: the coefficients are a
measurement of the lens that took the photograph, so accepting them is neutral
and declining them is the edit. The sidecar therefore stores nothing for the
ordinary case and the correction still happens.

The switch appears only where a profile was matched. A tick box on a photograph
whose lens the database has never heard of would be a control that looks
available and does nothing, which is the failure the rule above names rather
than an instance of following it — those photographs are told "· no profile" in
words instead, and one whose box is unticked now says "· profile off", which is
a third fact and not either of the other two.

Two things had to be built underneath. `ParamKind::Bool` was in the core's
closed enum and mapped to a row kind here, and had no control behind it in
`adjust.slint`: a parameter declaring itself a switch was flattened into a row
that drew nothing at all. Nothing shipped had one until now, so the gap cost
nothing and was invisible. And `Check` self-toggled, which is right for a
settings page that owns its value and wrong for a panel row that is a view of
the edit graph — the click would have answered by replacing the binding with a
literal, and the next undo or pasted preset would have moved the value with the
tick left where the finger put it. It now takes `controlled`, and the generated
row uses it.

The manual sliders are unchanged and still trim whatever the profile leaves, so
switching it off is "correct this by hand" rather than "stop correcting".
2026-09-07 00:27:47 +02:00
dtourolle 901f51e6c4 Point at something grey and let the pipeline work out the rest
FR-DEV-3 has asked for "white balance (temperature/tint, and picker)" since
it was written, and only the first half existed. `WidgetKind::WhitePoint` was
in the vocabulary and `develop::supported` answered false for it, so the node
degraded to two sliders — correct behaviour that had quietly become the only
behaviour. Sampling a neutral is the first move of the global tonal pass and
every colour judgement afterwards is measured against where the grey was put,
so guessing at two sliders until a wall stops looking green is the wrong way
round.

The awkward part is that a picker genuinely needs to know how far a hundred
units of temperature move red against blue, and that number is declared in
the node's own file. So the inversion lives in `dr_pipeline::neutral` rather
than in the interface: the canvas hands over a colour, the core finds the
operation that asked to be driven by a pixel and bisects its declared
response until the sample comes back grey. Nothing in `ui/` names white
balance, and nothing holds a second copy of a response that would be wrong
the first time somebody adjusted the range. A bisection rather than a
closed-form inverse because only monotonicity is part of the bargain — the
expression is free to become a table tomorrow.

The result is rounded to the precision the control is drawn at, which is not
cosmetic: unrounded, sampling something already neutral lands a
ten-thousandth off zero, and the photograph comes back modified with an undo
step for a correction of nothing.

On the panel side this needed one distinction the generated path was
missing. `is_on_canvas` was being read as "and so the panel draws nothing for
it", which is right for a crop — four edge fractions are not controls anyone
drags in a list — and wrong for an eyedropper, which *writes* temperature and
tint and leaves them exactly the controls a photographer reaches for next.
So a sampling widget keeps its sliders and puts the affordance that arms the
canvas in the group's heading, built like the reset beside it. One click, one
sample, one history step: `Edit::Action` never coalesces, and there is no
hover preview to fill the stack with temperatures nobody chose.

Declaring the presentation also groups temperature and tint under one undo
step, where they were two. That follows from what `Presentation` means and
reads correctly — white balance is one decision — but it is a change, and
worth saying so.
2026-09-06 19:01:52 +02:00
dtourolle 43652bd613 Say where the positives really come from, not where they were going to
`calibrate.rs` claimed its positive pairs came from user confirmations "then
burst siblings, since FR-CULL-5 already groups bursts", and repeated it beside
the pair floor: "the positives are bootstrapped from bursts and a handful of
early confirmations". Neither is true and neither ever has been. Nothing in
the workspace pushes a burst pair into a `Pairs`; nothing pushes any pair at
all outside this file's own tests. The sentence was written while both halves
of docs/faces.md §8.1 were being planned together, describing a source that
was going to exist, and it has read since as a description of what the code
does.

The distinction matters more here than in most comments, because this file is
the one place in the subsystem allowed to say what a similarity *means*. A
reader who believes the fit is drawing on bursts believes a young library is
gathering positives on its own, which is precisely the opposite of the state
FR-CULL-9 legislates for — a library with no fit, no valid calibration, and a
reference curve it must not present as a measurement of itself. The floor of
200 positive pairs looks arbitrary under the wrong story and obvious under the
right one: confirmations arrive one at a time, from a person.

So the comment now says what is here — a positive is a pair confirmed onto one
person, and there is no second source — and keeps the burst idea where it
belongs, as §8.1's proposal, with the two reasons it is not in the code: this
crate is handed cosines and cannot see a catalog, and the purity of a burst
pair is a thing to measure before it is a thing to trust.

No behaviour changes; the arithmetic is untouched.
2026-09-06 19:01:50 +02:00
dtourolle 5fa4c0772b Speak the sidecar format every other editor already reads
FR-CAT-13 asked for standard XMP and nothing in the tree parsed or wrote a
byte of it. `keywords.rs` mentioned `dc:subject` in a comment about what a
keyword's text is for, `dr-export`'s metadata module said "neither is read by
`dr-decode` today" about its own half, and `dr-preset-xmp` reads a different
file for a different requirement. So a library imported from Lightroom could
come in and never go back out: a one-way door, which is not a thing a
photographer walks their archive through.

`core/dr-xmp` reads and writes the properties the requirement names —
`dc:subject`, `lr:hierarchicalSubject`, `xmp:Rating`, `xmp:Label` and the IPTC
core fields — from whichever shape the file happens to use. A property may
arrive as an attribute or as an element, inside a Bag, a Seq, an Alt or no
container at all, because the specification is not what wrote the file; so one
collector takes whatever is in a property and the declared shape decides only
how many values survive. `xmp:Rating="-1"` is modelled as Adobe's rejection
rather than folded into zero stars, since DarkRoom keeps those on two axes and
the mapping belongs where both are visible.

Writing is a rewrite rather than a serialisation, and that is the whole design.
An XMP sidecar is a shared document: the file beside a raw carries somebody
else's `crs:` settings and comments and namespaces, and rendering our record
over it would be data loss on every photograph but the first. The rule is
stated once, in the crate documentation and in `PROPERTIES`: DarkRoom owns
exactly those properties, identified by namespace URI and never by prefix, and
nothing else in the document. Everything unowned is copied through byte for
byte. A `Description` left empty once our properties come out of it is
withdrawn, which is what keeps a rewrite idempotent instead of adding a husk to
the file on every save.

Precedence is settled conservatively, because a standard XMP carries no
revision and no device and there is nothing in it to order two edits by.
Keywords union, following the rule `dr_catalog::merge` already makes for
assignments; every other field is taken only where DarkRoom holds none,
following `Version::merge`'s judgement rule, and a genuine disagreement is
reported rather than resolved so a caller can offer the reload the requirement
asks for. What is deliberately left open — when a reload may happen without
asking — is written down in the module rather than picked silently.

No new dependency: quick-xml was already in the tree for WebDAV and for
Lightroom presets. Nothing above the crate calls it yet, and `outstanding.md`
now says so along with the two smaller gaps, GPS and the filename convention.
2026-09-06 19:01:48 +02:00
dtourolle 68ebf5d78b Let a mask start from a tone or a colour, not only a shape
Every local adjustment began from a shape: painted, drawn with a handle, or
found by a model. So the only way to hold back a sky was to draw a line near
where it ended, and the only way to warm skin was to paint round it — both of
which put the edit's edge where the photographer put a gesture rather than
where the picture changes. A gradient across a treeline halos, and an
adjustment traced round a face stops on the outline of a hand.

MaskSource grows two variants that select by what a pixel *is*. Luminance
carries two bounds on the perceptual tone scale plus a softness; Colour carries
an arc of hue, a range of chroma, and one softness for every edge of both. Five
floats and three, so they diff, sync and merge per field under FR-NC-9 exactly
as a gradient's geometry does — the property a stored raster has none of, and
the reason the model's coverage had to sit beside its source rather than inside
it.

The pixels are the shader's business and nowhere else's. `mask.wgsl` takes the
demosaiced source as a sixth binding and two new modes read it: decode, balance,
pull a clipped photosite back to neutral, apply the camera matrix, then weigh
the band. Nothing crosses to the CPU but the numbers and the matrix, and each
mask texel averages its own footprint in the source, so a band lands on the tone
an area is rather than on whichever texel a proxy grid happened to land on.

The photograph it measures is the one the camera recorded, before this edit. A
band over the edited result would slide out from under the edit as the edit was
made — raising the highlights would change which pixels counted as highlights,
and the slider would chase its own mask.

Feather, falloff and morphology stay off a range layer, which is what
`shapeable` already meant. All three are functions of the signed distance from
a boundary, and a range has no boundary to be at a distance from; its edge is
the softness of its own band, in the band's units. Offering them would be four
controls that move and change nothing.
2026-09-06 19:01:48 +02:00
dtourolle 81b1ae8c42 Measure the haze from the picture, and divide it back out
Four files named dehaze as a member of the compositional detail family —
`detail.rs` twice, `dr-gpu`'s detail module, `ops/README.md` and
`capture_sharpen.rs` — and no such node existed. Every one of them was
describing the family by listing clarity, texture and a control the
photographer could not reach.

Haze is the one degradation the controls already in the chain cannot
remove, and the reason is spatial rather than tonal. Scattering
composites an airlight over the scene in proportion to distance, so the
lift is per-pixel: a black point that clears the mountains crushes the
foreground, and a contrast curve that clears the mountains does the
same. So the node has to estimate the transmission at every pixel, which
is the dark-channel prior — the local minimum over the channels and over
a patch is the airlight that has been added there — and then invert the
scattering model with it.

The airlight is taken as neutral and as unit, which removes the one part
of the published method this stage cannot perform. Estimating it
properly is a whole-frame reduction, and the detail chain has none: it
hands each pass the pass before it. It is also unnecessary, because
white balance is the first node in the chain and has already driven the
illuminant to grey, so only the magnitude is unknown — and an unknown
magnitude on the veil is a scale factor on the amount slider, which the
photographer is setting by eye regardless.

The patch is a fraction of the frame's shorter edge, through
`RenderScale::frame_fraction`, and never a count of pixels. It has to be
wide enough to contain something dark and narrow enough that what it
measures is still local, and both of those are statements about how much
of the composition it covers — so it must cover the same proportion of
the picture on a proxy as in the export, or the file is sharpened for a
patch three times narrower than the one that was tuned on screen.

Affording it needs an identity a Gaussian does not have. Erosions
compose by adding their structuring elements, so the minimum over a run
of d followed by the minimum over k points spaced d apart is the exact
minimum over the whole kd window. At the square root that is 16 taps
rather than 61 at 4K, and it is the same filter rather than an
approximation of one — which is the difference from the strided kernel
`local_contrast` refuses, where sampling an image that is not
band-limited aliases into the base and comes back as mottling.

It runs first among the compositional detail nodes, at order 125: after
noise reduction, because dividing by a transmission below one amplifies
the noise in the veiled distance by exactly the factor it recovers the
contrast by, and before clarity and texture, coarse before fine, so that
their base is computed on the picture the veil has left rather than on a
modelling about to be divided out.

What it cannot honour is the placement dehaze most wants. It shifts
colour — it subtracts a grey term and rescales, so saturation changes
wherever the veil is thick — and the colour work would ideally be
correcting the picture that leaves here. The detail stage runs as a
group after every point operation, because a neighbourhood pass is a
separate dispatch over a texture the fused pass has finished writing, so
an order placing this node ahead of `vibrance` would be a lie the chain
cannot tell. Interleaving would mean splitting the fused pass in half
around it, at the cost of a second full-frame dispatch and intermediate
for every edit in the catalogue whether it dehazes or not. The
declaration records that rather than leaving it to be rediscovered.

FR-DEV-18 is added to the requirements register alongside it. The tag
had nowhere to point, and an orphan tag fails the traceability gate
rather than quietly counting for nothing.
2026-09-06 19:01:47 +02:00
dtourolle 7c3e1d2c54 Let the shadows and the highlights carry a colour the picture never had
The colour mixer is the only chromatic control in the chain, and it can only
turn a hue that is already in the frame. Ask it for cool shadows against warm
highlights and it has nothing to take hold of: the shadows of a correctly
balanced photograph are near enough neutral that there is no band there to
turn, and a monochrome conversion hands it a picture with no hue in it at all.
Split toning is the oldest look in the book and every developer worth comparing
against ships it; there was no way to reach it from here.

So colour_grading, declared like any other node — a hue and a strength for the
shadows, the midtones and the highlights, and a global cast over the frame. It
targets a tonal range rather than a hue, which is the whole difference between
the two controls: it puts colour where none was rather than turning what it
finds. It sits at 105, after the mixer has had the last word on the colours
that are in the picture and before the detail stage.

The mechanism is one helper. Three cosines 120 degrees apart are the hue wheel
written directly as an RGB direction, and their sum is zero at every angle, so
exp2 turns them into three gains whose product is exactly one — a cast tilts
the balance without moving the level. A grade that doubled as an exposure
change is the failure that has the photographer chasing brightness with a
colour slider, and it is corrected with a control that cannot reach it. The
three tonal weights partition the scale rather than overlapping, the midtones
being whatever the two ends leave, so setting all three to one hue is exactly
the global cast and a split tone does not colour its own midtones as a side
effect of its halves meeting. Full strength is half a stop on the leading
channel, the ceiling white balance already holds itself to.

Neutral is declared rather than inferred, which is what `active:` is for. A hue
with no strength behind it is a direction with no distance, so under the
default rule nudging one would have put the node into every fused shader for a
change nobody can see. Summing the strengths is zero exactly when all four are,
and they cannot go negative to cancel each other. The opposite reading —
neutral as "nothing has been touched" — fails the other way round: red is hue
zero, so a grade toward red never moves a hue off its default and would never
have been applied at all.

It asks for a colour wheel, the widget the descriptor vocabulary has been
carrying with no operation behind it. Nothing draws one yet, and that is fine
by construction: the panel takes the first widget it implements and falls
through to sliders otherwise, so this arrives as eight ordinary controls that
work. Each parameter is named for its own range for exactly that reason — in a
flat list, four sliders called "Hue" are four controls nobody can tell apart.

FR-DEV-12 is written into requirements.md beside it. A TRACES tag naming a
requirement that is not defined there is an orphan, and the traceability gate
fails on those rather than quietly counting them. The label catalogue gets one
line for the operation's display name; the eight parameters derive correctly
and are left to.
2026-09-06 18:51:40 +02:00
dtourolle efa9d84aad Correct the lens first and settle the grain last
`Attribute::ALL` has claimed since it was written to be roughly the order a
photographer works in, and 474dcf0 moved `Compose` to the front on exactly that
argument. Both ends went on contradicting it.

`Optics` sat fifth, so the column offered the lens corrections after the tones
they change. Removing a vignette brightens the frame; an exposure judged before
that correction has to be judged again after it, which is the definition of the
wrong order. `Detail` sat fourth, so sharpening and noise reduction — the only
work here that depends on everything above it, and the only work that cannot be
judged at fit view at all — were offered before the lens had even been put
right.

So `Optics, Compose, Tone, Colour, Effect, Detail`. `Optics` leads even
`Compose` because it is not a decision about the photograph at all: it is
undoing what the equipment did, a property of the capture rather than a choice.
`Effect` after `Colour` is a look laid over a settled picture, and is the one
slot that is genuinely arguable — a spectral film simulation declares `renders`
and replaces the base curve, which is a case for treating it as foundational
instead, and e235e99 filed film under `Effect` only days ago. The doc comment
records that tension rather than pretending to settle it; an array of six
cannot say "last, except when it is first".

`decl::Attr::ALL` moves with it. It is the second spelling of one vocabulary,
compiled by `build.rs` where `descriptor` is not visible, and the agreement
test in `declared/mod.rs` zips the two positionally — that test is what caught
the last reorder, and it would have caught this one.

Nothing persists a position in this list, which is what makes the reorder safe
rather than merely tidy. `Scope` packs one bit per attribute indexed by
`Attribute::ALL`, but `bits` is private, has no accessor and no `serde`; what
reaches a settings file is `develop.copy_attributes`, a list of names read back
through `Attribute::from_name`. A photographer's copy scope survives untouched
— only the order the names happen to be written in changes.

6a97fdf is why this is worth a commit now rather than a shrug: the
contradiction was harmless while the list only fed a row of chips nobody reads
in order, and stopped being harmless when the same list began driving a column
read top to bottom.

The matrix follows the two files' shifted line numbers.
2026-09-05 21:17:56 +02:00
dtourolleandClaude Opus 5 e235e99cce Move the film to Effect in the descriptor that is actually read
An earlier commit claimed to move `film_sim` from `[tone, colour]` to
`[effect]` and did not. It edited `ops/film_sim.yaml`, where `attributes:` is
read, validated against the vocabulary, and then dropped: a `rust:` node
publishes its own descriptor, and the type still said tone and colour. The
stock went on appearing in the Light group beside exposure and again in Colour
beside white balance, exactly as before, and every test passed.

Nothing caught it because nothing could. The declaration parsed, the parity
tests compare ids rather than attributes, and an operation filed under the
wrong groups renders perfectly. It surfaced only on screen, as a missing
Effects tab — which is indistinguishable from a category that genuinely has
nothing in it, and is precisely how `Optics` looked for as long as it was
empty.

So three changes rather than one:

`FilmSim`'s descriptor declares `Attribute::Effect`, which is the move the
earlier commit described.

`attributes:` joins the keys a `rust:` node may not carry, beside `params`,
`uniforms`, `wgsl`, `helpers`, `define` and `label`. The rule was already
written — "its descriptor comes from the type" — and attributes were the one
field that slipped past it. A key that is silently ignored is worse than one
that is rejected, because it reads as though it worked; the eight hand-written
declarations lose a line that never did anything.

And a test asserts that every attribute the chain carries reaches the tab
strip. That is the property that was actually broken, and its failure mode is
invisible from every direction: the controls exist, they are in the shader,
and there is no way to filter to them.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 18:28:59 +02:00
dtourolleandClaude Opus 5 6a97fdf6f9 Put the adjustment groups in the rail where a finger is driving
Reported from the tablet: the tool rail is very useful there, and the same
interface under a mouse and keyboard is not. That is `ui-navigation.md` D-N2's
central assumption failing in use, and the interesting part is which half of
it failed.

D-N2 was right that platform is the wrong axis and width is the wrong axis: a
tablet in landscape wants what a desktop wants, and a desktop window dragged
narrow wants what a small screen wants. `apply_layout_class` still decides the
layout class from the window and nothing here changes that. What D-N2 got
wrong is the sentence "touch changes hit regions, not layout" — it identified
input as the real difference between the targets and then assumed that
difference could never reach the layout.

Two controls answer one question — which group of adjustments am I looking at
— and neither is better in general. A horizontal strip above the column is one
gesture to a target the eye has already found, and it pans when the operation
set is rich, so a group can sit off the end with nothing saying so: a pointer
user tolerates that, a finger user never discovers it. The same list down the
rail is every entry visible at once, each finger-sized, on the edge of the
screen the hand is already holding, and it costs no width because the rail is
already there.

So `ToolRail` grows a second section, and `GroupStrip` stands down when it
does. The two are never both on screen, which is why they can share
`adjust-tab-picked`: Rust is not told which was pressed and has no reason to
want to. Mode and group stay independent axes as N1 requires — one entry lit
in each section, and choosing a group while a tool is held still filters
without putting the tool down.

They stay drawn differently, which N1 also required. The tools fill with
`active-dim` and invert their ink; the groups take a bar down the leading
edge — the strip's underline turned ninety degrees — so a lit entry says which
kind of state it is without the reader having to remember which section it was
in. The rule between the sections is the second signal.

The rail scrolls now. Its own note argued against a Flickable because "this
list is four entries written in this file"; with the groups in it the list
comes from the operation set, which is exactly the "something the user's data
decides" that note excluded this control from.

The axis is input, and it is a preference because the automatic answer is a
guess that cannot be made reliable. Neither platform can be asked what the
user is holding: an Android tablet in a keyboard case is being driven like a
desktop, and a touchscreen laptop is whichever its owner says.
`dr_plat::is_touch_first` reports the usual case per platform, and
`GroupNavigation` lets it be overridden. Settings names what Automatic
resolves to on this device rather than leaving it to be found by pressing.

D-N6 records the reversal beside the decision it reverses, including the half
that still stands and the question it opens: whether Local is a mode at all,
or a scope that would collapse the two sections into one list.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 18:14:03 +02:00
dtourolleandClaude Opus 5 474dcf0bf6 Let Compose lead the attributes, as their own doc always said
`Attribute::ALL` claims to be "roughly the order a photographer works in" and
then listed framing fifth, behind tone, colour and detail. Framing is the
first decision made about a photograph and the one every later judgement is
made inside — there is no sense balancing tones across a frame about to lose a
third of its width.

The contradiction was harmless while the list only fed a row of chips nobody
reads in order. It stops being harmless now that the same list drives a column
read top to bottom.

`declared::Attr::ALL` moves with it. The two are separate spellings of one
vocabulary and a test asserts they agree, which is what caught this rather
than the order silently disagreeing between the YAML front end and the crate.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 18:13:44 +02:00
dtourolleandClaude Opus 5 1ad35e2b87 Read the library's sidecars, so a cull done elsewhere arrives
Judgements only ever travelled outward. A rating went to the catalog and to the
photograph's sidecar, the sidecar reached the server, and there it stopped: the
scan indexes files, `derived_sync` exchanges thumbnails, face shards and
collections, `dr_catalog::merge` reconciles everything in a catalog except
`versions.rating` and `versions.flag`, and the one sidecar reader that existed
ran when a single photograph was opened in develop and handed its answer to the
develop graph. `JobKind::ReadSidecar` was declared for exactly this when the job
queue was written and was never enqueued or handled anywhere.

The grid draws `versions.rating`. So a day of culling on the tablet could not
reach the laptop by any path the application had, and the laptop's catalog says
so plainly: 23,568 images, one of them judged.

`pull_sidecars` closes it, off the back of work the scan already does.
`dr_sync::scan` reports the `.drsc` files it meets in listings it was making
anyway — no extra request, and a directory whose ETag is unchanged is still
pruned before it is listed at all. A new `sidecars` table records the ETag of
each one this device has taken in, so the fetch is one GET per sidecar that
genuinely changed rather than one per photograph. A library nobody has edited
costs nothing.

The judgement is taken rather than maximised. The sidecar is the authoritative
store and the fuse has already settled any contest between devices on
`revision`, so lowering a rating from four to one on the tablet lowers it here —
taking the larger would have refused every demotion the photographer ever made,
which is most of what a second pass over a shoot is. A zero is the exception: it
means *never judged*, not "judged zero", so a sidecar carrying none cannot erase
a star this device holds. That is `merge_judgement`'s asymmetry and it carries
the same known cost — clearing a rating does not propagate.

A sidecar names a stem, so both halves of a RAW-and-JPEG pair are judged: they
are one photograph (FR-CAT-11) sharing one document, and judging only one of
them would leave the grid disagreeing with itself over which it drew. The `LIKE`
that finds them is a filter, not the decision — `sidecar_path` is applied to
every candidate, because a folder is entitled to contain a `%` and a rating
landing on the wrong frame would be silent and permanent.

Failing to read one is not a failure to scan: the ETag goes unrecorded, the
ratings already here stay where they are, and the next scan tries again. The
count is reported to the status line as well as the log, because a grid that
silently gains three hundred stars is indistinguishable from one that has gone
wrong — and because while this number was structurally zero there was nothing to
tell the photographer their cull had not arrived.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 16:14:03 +02:00
dtourolleandClaude Opus 5 ca2a135e28 Let two devices name the same photograph's version the same way
A version's uuid is the identity a cross-device merge keys on, and it was
minted at random, per catalog, per image. Two devices indexing one Nextcloud
library therefore held two different uuids for the same photograph — so the
sidecar they shared collected a `default = 1` block each, `Version::merge` was
never handed a matching pair to reconcile, and an afternoon's culling on the
tablet did not exist as far as the laptop was concerned.

`crate::merge` has said so in a comment since it was written: version uuids do
not reconcile across devices, a uuid-keyed join unions nothing, so keywords are
landed on the local default version instead. It named the problem and worked
around it. `rating`'s own comment asserted the opposite — that generating the
uuid here was what made it a cross-device identity — and `library::amend`
repeated the claim. Uniqueness was never the difficulty; agreement was.

`derived_version_uuid` computes it from `oc:fileid` instead. The server assigns
that integer, every client pointed at the library sees the same one, and it
survives a server-side rename and move — the three properties that already made
`ASSIGN_BY_FILE_ID` prefer it to a content hash. The layout is a UUIDv8 (RFC
9562, an application-defined form) carrying all sixty-four bits verbatim across
the variable fields with a fixed tag in the node field, so the mapping is
injective by construction rather than by a hash's good behaviour, and a uuid in
a sidecar can be read back to the file it belongs to by eye.

A library with no server behind it has no shared identity to derive and keeps a
generated one. The split is still reachable there if the folder is synced by
something else; `Sidecar::fuse_default_versions` repairs that case rather than
preventing it.

Deriving it for new rows alone would have fixed nothing — every image in an
existing library already has a version, so every one of them would have carried
on writing to its own rival identity. `align_default_version_uuids` moves them,
and runs from `schema::backfill` on every catalog open. It selects on the tag
in SQL, so a catalog already realigned matches no rows and writes nothing, and
it declines rather than fails where a virtual copy already holds the target.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 16:13:58 +02:00
dtourolleandClaude Opus 5 601c984894 Fold a photograph's rival default versions back into one
Picking the newer of two default versions stopped the wrong edit being shown,
but it did not close the split: the losing version stayed in the file, and a
device holding disjoint work — a crop made here, an exposure change made there
— still contributed only one of the two.

Worse, the next write made it larger. `amend` looks its version up by uuid,
neither of the two was ours, so the miss minted a *third* `default = 1` block
and the file grew one rival per device per photograph.

`Sidecar::fuse_default_versions` folds them down. The version with the highest
`(revision, modified)` is the accumulator and every other default is merged
into it as the remote, which is what makes the fold order-independent —
`Version::merge` raises its own revision to `max + 1` as it goes, so merging a
chain in ascending order stops being ascending after the first step and a third
device would be dropped. Contested values resolve to the winner, disjoint keys
survive from both sides because the merge is key-wise, and ratings come across
under `merge_judgement`, so a device that never judged the frame cannot erase
one that did.

The result is a function of the file's bytes alone, so two devices that fuse
independently reach the same document and converge instead of overwriting each
other.

Called wherever a sidecar is parsed:

- `amend`, with the write's own uuid, so the fold lands on the identity this
  device is about to use and the lookup below it hits instead of missing.
- `spawn_sidecar_fetch`, so opening a photograph shows everything done to it
  rather than whichever half won.
- `drain_one`, because `merge_into` reconciles by uuid and would otherwise
  publish the split rather than resolve it.
- `presets::load_local` and `save_local` — a local sidecar's folder may be
  synced by something else entirely, and gets the same split.

A file with one default under the expected uuid comes back byte-identical, so
this costs nothing on the ordinary write and no sidecar is uploaded merely for
having been read.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 16:13:53 +02:00
dtourolleandClaude Opus 5 98fcf8e98e Ask which edit is newer, not which uuid sorts first
A photograph edited on two devices ends up with two `[version]` blocks in one
sidecar, both marked `default = 1`. Five of the thirty-eight sidecars in the
local cache are in that state right now.

`default_version` answered with the first `is_default` it met in map order,
and the map is keyed on uuid — so which device's work the photographer saw was
decided by which randomly minted uuid happened to sort lower. On
`IMG_20130625_0033` that is `0545c20a` over `679fe872`: a four-star rating from
the twenty-first of August standing in front of the one-star made on the
thirtieth, with nothing anywhere saying the newer judgement existed.

Resolved by `(revision, modified)` instead, which is the discriminator
`Version::merge` already uses — revision first so that a device with a skewed
clock cannot win by claiming a later timestamp (FR-NC-8), and the timestamp
only to break an exact tie.

This makes the reader pick the right one. It does not make the two converge:
the edit that lost is still in the file, and a device that holds disjoint work
— a crop here, an exposure change there — still only contributes one of them.
That is the next commit.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 16:13:49 +02:00
dtourolleandClaude Opus 5 a56baa9042 Let rustfmt have the assertion it reflowed
The closure taken down to `&dyn Operation` needed its call site re-wrapped,
and I wrapped it by hand rather than letting rustfmt decide: it fits on one
line at the workspace width. `cargo clippy` was run on the change and
`cargo fmt --check` was not, which is the whole of how it got through — the
two catch different things and CI runs both.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 15:37:46 +02:00
dtourolleandClaude Opus 5 2841eaf9a1 Take the layer-chain test's closure down to &dyn Operation
`clippy::borrowed_box` is denied by the workspace lint set, and the closure
added with the optics exclusion took `&Box<dyn Operation>` — a borrow of the
box rather than of the thing in it, which says nothing the plain trait object
does not.

Caught by `cargo clippy --workspace --all-targets -- -D warnings`, which is
what CI runs and what the workspace tests do not: a lint on test code only
appears when the tests are compiled as a clippy target.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 15:14:15 +02:00
dtourolleandClaude Opus 5 c4ddcbe0f7 Look the lens up and say plainly whether one was found
`dr-lens` has held a complete Lensfun lookup — distortion, TCA and vignetting
coefficients from a lens name, a focal length and an aperture — with no
dependents anywhere in the workspace. The three corrections it feeds now
exist in the graph, so this connects the two and finishes the chain.

The coefficient structs stay duplicated. `dr-pipeline` is organised around
having no dependencies so its codegen is testable without a device or a
database (ARCH §6.5a), and `dr-lens` carries an XML parser and 5.5 MB of
profile data. Neither crate can convert to the other, so the conversion goes
above both, in `develop.rs`, which is the only place that sees them together.

Both traits grow the same defaulted door. The optical corrections do not sit
on the same side of the fetch — distortion and CA rewrite coordinates and are
`Warp`s, vignetting applies a gain to the pixel already there and is an
ordinary node — and fanning a profile out by which trait each happens to
implement would make the caller reason about that distinction. Each correction
takes its own share of the whole profile instead, and `set_lens_profile` walks
both lists identically.

The lookup happens in `set_source_metadata` rather than in its caller, because
that is the one place a session is told which file it came from. Doing it
there makes it unforgettable, in the shape `FilmRebake` already uses for the
other derived thing — and, more to the point, makes *clearing* unforgettable:
a session that opened a second photograph while still holding the first one's
profile would correct it for the wrong optics, invisibly, in a way that looks
exactly like the lens.

It needs the whole shot and not just a name. Distortion is interpolated across
a zoom's focal range and vignetting depends strongly on aperture — a fast
prime can be two stops down in the corners wide open and clean by f/8 — so a
lookup missing either returns coefficients measured for a shot nobody took.
Missing any of the three refuses rather than guesses.

A profile is derived, not persisted: it comes from the file's EXIF and a
database, so it is not a parameter, not in the sidecar and not undoable. What
is an edit is the manual trim beside it, which each correction composes with
the measurement — so a photographer can lean on it, override it, or work
without one.

`InfoPanel` gains a lens line, and it distinguishes three cases rather than
two. `dr-lens` states the rule it exists for: an automatic correction that
silently did nothing is worse than one the user can see is unavailable. A
session with no header draws nothing, a header naming no lens reads "Lens not
recorded", and a lens the database has never heard of reads "· no profile".
Collapsing the last two would send somebody hunting for a profile that was
never missing — which, for third-party and adapted glass, is the ordinary case.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 15:11:32 +02:00
dtourolleandClaude Opus 5 a1165ef182 Put the coordinate-domain lens corrections into the graph
`lens.rs` has held a `Warp` trait, a composer and two implementations —
distortion and lateral chromatic aberration — since they were written, and
`compose_warps` was called by nothing outside its own tests. The corrections
existed, were correct, and never touched a photograph.

`EditGraph` now holds them, and `compose_full` emits them between the framing
prologue and the fetch. Distortion first, then CA: each warp receives the
position the previous one produced, and lateral CA is a magnification about
the optical axis of the *undistorted* frame, so measured on a barrel-distorted
one it would be fitted to a radius no profile describes.

They reach the panel the way framing already does — through `capabilities`.
That was the one open question and existing practice answered it: framing is
also not an `Operation`, also has parameters a photographer sets, and also
arrives through that list. Because `Preset::capture` walks the same list, the
sidecar, the clipboard and the undo stack carry a warp's parameters with
nothing registered anywhere, and no file under `ui/` names one (FR-DEV-3a).

`state()` destructures `EditGraph` field by field precisely so that a new
field cannot be forgotten, and it was not.

Chromatic aberration is the only thing that samples per channel, and
`splits_channels` is what keeps everything else from paying for it. Red and
blue are fetched from positions green is not — green is the reference and
never moves, so a wrong correction still leaves one channel sharp rather than
softening all three. With no CA in the chain the single-fetch path is emitted
instead.

The interpolating sampler is now chosen by framing *or* an active warp. Asking
framing alone would have nearest-neighboured a distortion correction on an
unstraightened frame, and that aliasing reads as a bad profile rather than as
a missing filter.

The warps go in the geometry invalidation key rather than the colour one: they
decide which source pixel a colour is read from, so a tile cached across a
distortion change would keep drawing the previous correction. The pipeline
cache needs nothing new — `hash_source` already covers the generated body, and
uniform values never enter it, so arming a warp recompiles and dragging it
does not. Both are asserted.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 15:03:16 +02:00
dtourolleandClaude Opus 5 e17b909d41 Connect the lens vignetting correction to the pipeline
`ops/vignetting.rs` has carried a complete descriptor, polynomial, helper
and test suite without an entry in `ops/`, so it was never in `chain()`.
It reached no photograph and no panel, and `Attribute::Optics` was an empty
category in consequence — filtered out of the tab strip for having no rows,
by a chain that had never been given its only member.

Declaring it needs the one thing the operation was written against and
which did not exist. `wgsl_body` reads `radius`, and the module claimed
"the composer publishes `radius` in the shader prologue for exactly this
reason". It did not. `sample_source` now does, in both sampling branches,
beside the `source_px` it already published for the same class of caller.

It is corner-normalised there, which is the part that is easy to leave out.
`p` spans ±0.5·aspect, so its length at the corner is 0.5·length(aspect) —
about 0.901 on a 3:2 frame, not 1. Lensfun's polynomials are fitted against
a corner radius of 1, so passing `length(p)` straight in evaluates every one
of them short of where it was measured, by a factor that changes with the
aspect ratio. It would have read as a correction that is simply too weak,
which is indistinguishable from a bad profile. Both `lens.rs` and
`framing.rs` asserted the normalisation `p` does not have; corrected.

`order: 5` puts the correction ahead of the tonal stages, and the ordering
is load-bearing rather than tidy. Recovering a corner means dividing by an
attenuation below one — about two stops for a fast prime wide open — so run
after the highlights have been rolled off and clipped, the lift has nowhere
to go and the corners posterise instead of brightening.

`layer_chain` now drops `Optics` as well as the neighbourhood operations.
A local vignetting slider would have worked, which is what makes it worth
excluding: `radius` measures from the centre of the whole photograph and a
mask cannot move the optical axis, so it would lay a frame-centred radial
ramp across the picture and multiply it by the mask. The existing exclusion
covers operations that move and do nothing; this one covers an operation
that moves and does something its name does not promise. The rule both
share is now written down.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 14:34:24 +02:00
dtourolleandClaude Opus 5 8e7b1350bf Name the frame's category for the decision, not the maths
`Attribute::Geometry` becomes `Attribute::Compose`, and `film_sim` moves
from `[tone, colour]` to `[effect]`.

Two categories were doing the wrong job. "Geometry" describes what crop,
straighten and the quarter turns do to coordinates — but it describes lens
distortion correction exactly as well, and that is not a compositional
choice at all. Naming the attribute for the photographer's decision is what
separates it from `Optics`: one is what the lens did, the other is what
they chose. The maths the two have in common is not the thing worth
filing them under.

A film stock declared both `tone` and `colour`, so "Kodachrome" appeared in
the Light group beside exposure and again in Colour beside white balance —
two places, neither of which is where anyone looks for it. It is neither:
`Effect` is defined in this same file as "applied rather than corrected — a
look, not a fix", which is what a stock is. That it moves tone and colour
is true of every look, and is not what the attribute is for.

`from_name` still accepts "geometry" on the way in. That string is
persisted in `develop.copy_attributes`, and an entry it fails to parse is
not an error — `presets::scope_for` logs it and drops it — so without the
alias an existing settings file would have quietly narrowed what a paste
carries. `name` writes the current spelling, so the file migrates itself
the first time it is saved.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 14:34:03 +02:00
dtourolleandClaude Opus 5 f6c9343bcc Ask the pixels where the edge is, not just what belongs
Benchmarks / CPU and I/O (per commit) (push) Successful in 3m53s
Benchmarks / Frame budget (on demand) (push) Skipped
Build and test / Desktop (Linux) (push) Failing after 1h18m38s
Build and test / Layer separation (push) Successful in 46s
🐳 Android image / Build and push (push) Successful in 2s
Build and test / android-image (push) Successful in 3s
Traceability / Requirement traces (push) Failing after 50s
Build and test / Android (aarch64) (push) Failing after 30s
The colour gate decided *what* was in a category and had no way to decide
*where* its edge fell. A colour test has no notion of an edge. So a refined
sky lost its flag and kept the model's twenty-pixel-blocky outline, and no
setting of the control could move that outline onto the horizon.

This adds the second half: a **marker-based watershed**. The mask is eroded
to give two markers, and the flood runs in the ribbon left between them,
meeting along the most expensive line it can find. The cost is a sum of terms
exactly as docs/segmentation.md §2 specifies — the photograph's own edges, and
the colour model's disagreement.

## Why this is not the watershed §15 threw away

That path failed because the merge *ladder* collapsed: 45,808 basins reduced
to one region plus specks. There is no ladder here. Markers prevent
over-segmentation by seeding rather than by merging afterwards, so the one
component that broke is the one component this does not have.

The markers are also better than the textbook's. scikit-image derives them by
thresholding the gradient — guessing where objects are — where these come from
a model that knows what sky is. Marker selection is what normally goes wrong
with this method, and it was already solved.

## The gate still runs, and it runs first

A flood cannot replace the colour gate. It only refines contours that already
exist, and there is no contour around a flag precisely because the model never
noticed one — the flag in the tests sits forty-five pixels from the boundary
against a ribbon of six. The tests caught this; the first version of this
commit had the flood standing in for the gate and the flag stayed.

So the gate goes first and *creates* the contour, and the flood then puts every
contour — the horizon and the new hole alike — onto a real edge.

## Erosion that does not delete flagpoles

Eroding by a cell and a half destroys anything thinner than three cells: a
mast, a bare branch, and equally a strip of sky between two of them. Those
would be left unseeded and the flood would fill them from whichever side
surrounds them, so a flagpole would come back — and come back *confident*.

Erosion therefore stops at the ridge of the distance transform. Whatever would
otherwise vanish keeps a one-pixel seed down its centre, floored at
`min_thickness` so a hot pixel does not qualify. That floor also moves the
signal-versus-noise decision out of colour space, where it was a share of a
fitted distribution nobody can picture, and into image space, where it is a
width in pixels a photographer can see.

## Two modelling errors the outward test found

Both were invisible while the refinement could only subtract, because the gate
was multiplied by weights that were already zero outside the mask. The moment
the boundary could move outward they decided the answer.

**A diagonal covariance is wrong along a gradient.** Sky moves along all three
opponent features together — luminance up, red-green drifting, blue-yellow
down — so treating them as independent charges a colour two deviations along
that gradient three times over. Measured: sky fifteen rows past the sample
scored 11.6 against a threshold of 11.34, so the model refused the very thing
it was refining. The fit now carries a full 3x3 covariance, inverted by
cofactors rather than by a dependency (D13, the NDK).

**Eroded seeds understate the spread, always, in a known direction.** The
sample is drawn from the middle of a category and never from its edge, so for
anything with a gradient the colours nearest the boundary are exactly the ones
left out. The broad mode is therefore fitted wider than its sample by
`SHOULDER`. Same pixel: Mahalanobis 5.9 uncorrected, 1.5 corrected — the
difference between refusing the horizon and reaching it. Only the broad mode
is widened; the tight ones are what discriminate.

## What was given up

Strict subtractivity. It bounded the damage and kept `scene.rs`'s partition
true for free, and it had to go: a mask that may only shrink can sharpen a
horizon inward but never outward, so wherever the coarse contour sat inside the
true edge, the error survived every setting of the control.

The travel bound replaces it. Everything beyond the ribbon is already a marker,
so the flood never reaches it — not "can only remove" but "can only move this
far", and the distance is the model's own uncertainty. That single bound also
retires the connectivity test, the reachability radius and the separate
additive path that an outward-growing rule would have needed. A blue car below
the horizon cannot be gained, not because a rule forbids it, but because the
flood is never there.

`the_colour_gate_only_removes` keeps the older property where it still holds;
`the_flood_cannot_travel_further_than_the_ribbon` holds the new one across the
whole travel of the control.

## Cost

The flood visits only unlabelled pixels, so confining it to the ribbon is not
an optimisation added on top — it is what a seeded flood does. A ribbon of a
few tens of pixels around one contour is a small part of a proxy.

The distance transform is no longer cached, because it has to be measured from
the mask as the gate leaves it and the gate moves with the control. That is one
transform plus one flood per change of the control, against a precompute that
runs the model once.

Verified: fmt clean, clippy --workspace -D warnings clean, 63 dr-segment tests.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 21:29:12 +02:00
dtourolleandClaude Opus 5 710fcbc1bd Format the face work with the workspace's own rustfmt
Not authored in this session. `cargo fmt --all` reformats every crate, so
running it while working on `dr-segment` picked up five files from the recent
face and library work that had been committed unformatted.

Committed on its own rather than swept into the change that happened to
produce it: the diff is pure whitespace, and mixed into a commit that alters
an algorithm it would be noise in exactly the place someone is trying to read
carefully. `cargo fmt --all -- --check` is a CI gate (tools/ci-local.sh), so
this had to land somewhere regardless.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 21:29:12 +02:00
dtourolle 89c4ff1820 Store what the model found, so a reopened photograph keeps its masks
A subject or category layer was written to the sidecar as identity alone —
which run, which instance, which category — on the reasoning that the pixels
are reproducible by running the same model over the same image. They are, but
only by *running the model*, and nothing runs one except a photographer
pressing "find subjects". So on every path that did not already have a run in
memory the layer resolved to no coverage, `MaskPass::render` logged "has no
distance field; skipping", and the adjustment was silently absent:

  - reopening an edited photograph rendered it without its local adjustments,
    and then saved that state back on the way out;
  - a batch export from the grid could not have them at any point, because
    `render_from_library` opens a session, applies a version and renders, and
    there is no model anywhere on that path. Three hundred files written
    without the edits their photographer made, over a log warning.

Neither failure announced itself. The generated shader still emits the layer's
block and the empty placeholder multiplies it by zero, so the result is a
well-formed frame that is simply missing an edit — `mask_is_stale` already
named the state and called it "not stale, just unrenderable".

The coverage now travels in the file, as one `coverage = w h levels payload`
line at the end of the layer's block.

Two levels, and that is not a compromise. The model hands out a byte per pixel
but `Shaped::build` measures its distance field from `coverage >= 128` and
throws the shoulder away on the first line; everything soft about the rendered
edge comes afterwards from the layer's feather and falloff, which are read off
the distance. So one bit per pixel is not an approximation of what the model
said — it is exactly the part of it that reaches a pixel, and the stored mask
renders the identical frame. Storing all 256 levels would have stored 1.7 MB
of bilinear interpolation to reconstruct a predicate, and would not even have
compressed: a model mask is a bilinear upsample of a coarse grid, so almost no
two adjacent bytes are alike. Measured on a simulated sky and a simulated
figure at 1600x1067, against 1.71 MB raw: 4.0 kB and 6.5 kB at two levels,
46 kB and 76 kB at sixteen, 835 kB and 1.43 MB at all 256. The level count is
still written into the line, so a later build that finds a use for the
shoulder can write sixteen and this one will read them rather than misreading
a stream of lengths as pairs.

The coder is hand-rolled — run-length pairs in a base-64 varint — because
`dr-pipeline` links nothing, which is the property that lets the descriptor
and codegen logic be tested without a device. `flate2` would have been fewer
lines and a dependency in the one crate that has none.

Where it lives matters more than how it is coded. The raster sits on
`MaskLayer` beside the source, not inside `MaskSource::Subject`: the source is
*identity*, which is what makes it diff as a handful of numbers and merge per
field under FR-NC-9, and a raster in there would have given the merge a binary
blob to arbitrate. It takes no part in `MaskLayer`'s equality for the same
reason — a device that has run the model and one that has not hold the same
edit, and counting the difference would raise a conflict over a cache and let
`remote_wins` answer it by discarding the only copy of the pixels.

Encoding happens in `masks_for_storage`, on the save path, rather than in
`ensure_subject_fields` where every coverage already funnels through.
`ensure_subject_fields` runs on a drag — dilating a mask with a compound
morphology rebuilds the field every frame — and encoding a megapixel raster
per frame is the kind of work NFR-P5 exists to keep off a gesture. Saving
happens once, when the photograph stops being the open one, and already costs
a network round trip.

Version skew holds both ways. A file with no `coverage` line reads exactly as
it did before, which is a layer that needs the model run; an unreadable one
costs the pixels and not the layer, because the layer is the edit and the
raster is a cache of it. An old build reading a new file drops the key it does
not understand, which costs a model run and no work. And a payload that will
not compress is refused rather than truncated: a checkerboard would encode to
twice the raster it came from, so past 64 kB nothing is stored and the
behaviour falls back to what it was — half a mask would render as a mask that
is confidently wrong, which is the failure that tells nobody.
2026-08-30 21:28:54 +02:00
dtourolleandClaude Opus 5 d44bffa4a8 Remember where the photographer was
Opening the application was always a fresh arrival at the beginning of
the library, whatever you had been doing when you closed it.

What is written down is the view, the scope, the rating filter and the
photograph on screen -- the open one in develop, the first visible one in
the grid. Not just a scroll position: a position without the filter that
produced it names a row of a list that no longer exists. Restoring them
has an order for the same reason -- scope, then filter, then position,
then the view -- because each step changes what an ordinal *means*.

Addressed by remote path and collection UUID, never by an ordinal or a
row id. `images.id` and `collections.id` are local to one catalog, and a
grid ordinal is local to one ordering; a record naming either would land
somewhere arbitrary on a second device and after any filter change on
this one. Where the ordinal is needed, `library::ordinal_of_path`
computes it through the grid's own `ORDER BY`, taken verbatim by a window
function rather than spelled a second time as an inequality -- which is
the mistake `grid_order_for` already warns about, and which a manually
ordered collection would make unreadable.

Every failure degrades rather than reports. A collection this device has
not merged leaves the scope at the whole library; a photograph that has
since been deleted falls back to when it was taken, which puts the grid
in the right week; a torn file yields no place and the library opens at
the top. Reopening develop is the one thing that requires an exact match,
because a canvas on a path that no longer resolves is a filename over an
empty frame.

The record lives in `dr-types` beside `Settings` and the store lives here
beside `SettingsStore`, for the reason `dr-types`' manifest gives: a JSON
serialiser in `core/` would be paid for by every crate there. Two files
and two lifetimes, though -- resetting preferences must not forget where
you were.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 20:39:50 +02:00
dtourolleandClaude Opus 5 3d248cfb79 Export the photograph, not the canvas
Zooming the develop view changed the exported file. `Framing::view` is
kept out of the sidecar, out of `is_active` and out of `output_size`
precisely so that it cannot — but those exclusions keep it out of the
*edit*, and an export is a *render*. `visible_rect` deliberately folds
the view into the single rect the fused shader's prologue samples, so
`render_for_export` inherited it: at 4:1 it wrote the middle of the
frame, magnified to fill the file at the full output size, with the
detail kernels scaled four times over because `render_scale` folds the
view in as well. `render_thumbnail` did the same to the grid.

`render_uncropped` already suspends the view for this exact reason, so
the fix is its pattern: one `render_the_file` that both file-producing
paths go through, composing inside the suspension since the view
reaches the shader as a uniform baked at composition time. Restored
whatever happens — leaving the graph un-zoomed after a failed export
would throw away where the photographer was looking.

Nothing caught it because the guard checked the wrong things.
`zooming_does_not_change_the_exported_image` asserted the output size
and the crop; both held perfectly throughout. Renamed to
`zooming_does_not_change_the_size_or_the_crop`, which is what it
tests, and the pixels are now guarded where pixels exist. The new test
uses a ramp rather than quadrants deliberately: a four-quadrant frame
is self-similar under a centred zoom, and the first version of this
test passed against the bug because of it.

Traces FR-EXP-9, which asks for the full-quality pipeline "regardless
of what the display was showing".

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 19:41:30 +02:00
dtourolleandClaude Opus 5 4af3b93dfa Index faces from the native render, not from a preview of it
Implements the FR-CULL-8 written two commits ago. The sweep fetched the
JPEG preview embedded in each RAW and used that one buffer for both
detection and the crop; it now fetches the original, renders it through
the same path export uses, reduces that for the detector, and warps the
crop back out of the native frame.

Three pieces, and each exists for a reason worth stating.

dr_face::Pixels lets the warp sample 8-bit RGBA directly. A 24 MP native
frame is 96 MB as RGBA and 288 MB converted to the f32 RGB align.rs was
written against, and the warp reads about forty thousand pixels out of
it. Converting the whole frame to sample 0.2% of it is NFR-RES-2's
budget spent on a copy, per image, for a whole library. The variant
costs one branch per sample and a test asserts both layouts produce
identical crops.

The detector gets a box-filtered reduction to 1600px, not the native
frame and not a point-sampled one. Averaging rather than sampling
because the detector's job is finding small faces and decimation is
precisely the operation that removes them: at 4x, fifteen of every
sixteen pixels are discarded and a 40px face survives or not depending
on where it falls relative to the sample grid. 1600 rather than 640
leaves the letterbox a mild 2.5x rather than a 9x, and bounds the f32
buffer at 20 MB.

Landmarks come back in the reduction's coordinates and are scaled to
native in one place before any crop pixel is read. This is the failure
mode that would not announce itself -- unscaled landmarks put every crop
near the top-left corner, which yields faces of something else, cleanly
embedded and confidently clustered.

The sweep fetches SWEEP_LANES-wide and renders sequentially. Not a
placeholder for a parallel version: there is one GPU, so concurrent
renders queue on it regardless, and each materialises a native frame.
Overlapping them would multiply the one allocation that threatens the
memory budget while buying parallelism that does not exist. The chunk
drops from 96 to 6 for the same reason -- 96 held 8 MB previews, this
holds whole RAWs.

The stored edit is deliberately not applied, which is where this departs
from export::render_from_library. Face geometry is normalised to the
frame, so indexing a cropped render would record boxes against a frame
that changes whenever the user changes their mind, and every stored box
would quietly become wrong. Orientation is applied: that is a fact about
the file rather than an edit.

examples/face_native.rs renders one file and indexes it both ways, so
the claim behind all of this can be checked against photographs rather
than re-read out of the catalog it came from.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 19:41:30 +02:00
dtourolleandClaude Opus 5 e7b526c550 Specify face indexing at native resolution, and say what the proxy cost
FR-CULL-8 said detection runs against the thumbnail or proxy tier and
never a full decode, and faces.md §5 said the aligned crop is sampled
from that same proxy. Both are wrong in the same place: they treat
detection and cropping as one resolution problem when they are two, with
opposite answers.

Detection does not care. §4.1 fixes the graph's input at 640x640 and
letterboxes whatever arrives, so a face filling 2% of the frame reaches
the model at 12px whether the buffer handed over is 1024px or 6000px.
Every pixel above the detector's own input is discarded before inference.

The crop cares about nothing else. §5's warp produces the fixed 112x112
ArcFace sees, so source resolution converts directly into whether those
112 pixels were photographed or interpolated. Reading crop_px across the
18,671 faces the proxy-tier implementation stored: 47.3% were upsampled
to reach the embedder, 314 of them by more than 2x, the smallest from 34
source pixels. An upsampled crop does not fail loudly -- it yields a
confident embedding of detail that was never there, and the damage
appears three stages later as clusters that will not separate.

So FR-CULL-8 now specifies four stages with the resolutions named
separately: render native through FR-EXP-9's pipeline, downscale for the
detector, map boxes and landmarks back to native, crop and align from
the native render. The affordability the old rule bought is met instead
by when the pass runs -- background, preempted, resumable -- and the
requirement says plainly what it now costs on a remote library: the
original rather than FR-NC-3's byte range, 412 GB across the reference
library's 19,107 images, so a whole-library pass is a transfer under
FR-NC-6 rather than something that may start on its own.

MIN_CROP_EDGE replaces the MIN_DETECT_EDGE this branch briefly had. Same
number, guarding the quantity that turned out to matter.

faces.md §7b records both measurements, and marks the second as
unexplained rather than dressing it as a finding. Grouped by the buffer
detection ran against, faces per image was 0.078 at 1024 or below and
1.82 at 2048 or better, controlled for file type and size. That gap is
real and reproducible and I cannot account for it, because the letterbox
above says detector input should not matter. M4 is where it gets
settled. The crop measurement does not depend on it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 19:41:20 +02:00
dtourolleandClaude Opus 5 144d2e4e84 Revert the detection floor: it guards the wrong resolution
Reverts 53f7cdf and e92d22d. The floor those added sat on
Detector::detect, refusing any buffer under 1025px on the reasoning that
a small buffer finds no faces. That reasoning does not survive §4.1:
the detector letterboxes every input to 640x640, so a face occupying 2%
of the frame presents at 12px to the model whether it is handed a 1024px
buffer or a 6000px one. Detector input is precisely the quantity that
does not matter.

Worse than merely useless, it blocks the design FR-CULL-8 now specifies,
where the detector is deliberately fed a downscale and the crop is taken
from the native render. A guard on detect() rejects exactly that call.

What the measurement actually supports is a floor on the *crop* source,
which is where resolution converts into embedding quality, and which
faces.crop_px already records: 47% of the reference library's faces were
upsampled to reach 112x112. That floor is a separate change against the
native-resolution path and does not belong on the detector.

The 23x faces-per-image gap by source_edge that motivated the original
commit is kept in faces.md §7b, restated as the unexplained observation
it is rather than the causal claim it was written as. V12 stands: those
runs cropped at 1024 whatever detection did, and that is reason enough
to look at them again.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 19:41:12 +02:00
dtourolleandClaude Opus 5 d0ebc9f571 Count the same images in the progress figure that the sweeps index
The Identity screen said 4,593 images were left to index and stayed
there for hours across repeated runs, which is what a stuck job looks
like. It was not stuck. 4,424 of those 4,593 are shadowed -- the JPEG
half of a RAW+JPEG pair -- and no sweep will ever index one, because
every work list is built on VISIBLE, which excludes them. They are not
separate photographs and the grid does not show them either.

But faces::coverage counted them: its denominator was "images WHERE
trashed_at IS NULL", with no shadowed_by clause. So the outstanding
figure had a floor of 4,424 that no amount of work could bring down, and
Coverage::is_complete could never once return true no matter how
completely the library had been indexed. A progress number that cannot
reach its own target is worse than no progress number.

The fix is to count the population the sweeps actually draw from, in all
three places that were describing it differently: coverage's denominator
and its indexed join, and audit's split of the outstanding set, which
had the same gap and fed the same status line.

On the reference library the denominator goes from 23,531 to 19,107 and
outstanding from 4,593 to 169 -- the second of which is a number the
user can watch go down, and which turns out to be a real and separate
fetch failure worth chasing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 19:41:04 +02:00
dtourolleandClaude Opus 5 0a6509de93 Forget the face runs made on proxies too small to see a face
The floor added in the previous commit stops this happening again; it
does nothing about the 1,824 images in the reference library that
already carry a face_index row written against a proxy of 1024 or less.
Those rows are why the damage is permanent rather than merely past. The
work list is "images with no row for this model", so an image examined
against a 1024px proxy -- 0.078 faces per image, nine in ten finding
nothing -- is indistinguishable from one examined properly, and no
later pass will ever offer it to the detector again.

V12 deletes exactly those markers, and nothing else. The faces those
runs did find stay in place and keep drawing the People screen until a
better pass replaces them, and record_detections re-attaches the user's
confirmed names across that replacement by box overlap, so a library
somebody has spent an evening naming does not lose that evening. The
cost is a re-fetch of the affected images.

Deleting the marker rather than teaching the work-list query to select
on source_edge, which was the other option and is worse. A standing
`source_edge < floor` predicate never lets go: an image whose largest
embedded preview is genuinely smaller than the floor would be re-fetched
on every sweep for ever, because the next pass cannot do any better than
the last one did. A one-off deletion gives each affected image exactly
one more attempt through the good path and then lets the ordinary
"has a row" rule settle it.

The threshold is written out in the SQL instead of referring to
dr_face::MIN_DETECT_EDGE. A migration has to keep meaning what it meant
when it ran; binding it to a constant someone may raise later would
quietly change what an old catalog gets migrated to.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 19:40:26 +02:00
dtourolleandClaude Opus 5 1d800d56b0 Refuse to detect faces on a proxy too small to find one
Detection was run on whatever proxy the caller happened to have. A
small one does not fail -- the image is letterboxed into the detector's
640px input at any size -- so it comes back with almost nothing, and the
caller then writes a face_index row saying the photograph was examined.
That row is the damage. Nothing distinguishes it from "examined
properly, no faces in this one", so the image is never looked at again.

The measurement, on the reference library of 23,531 images. Runs against
a 1024-edge proxy: 0.078 faces per image, 90% of them finding nothing at
all. Runs against 2048 or better: 1.82. To rule out the obvious
objection that small proxies just come from small photographs, the same
comparison restricted to DNGs -- 1,592 of them averaging 21 MB against
7,724 averaging 23 MB, so the same kind of file in the same library --
gives 0.078 against 1.82 again. Twenty-three fold, on identical source
material, identical weights, identical options.

So the floor goes in the detector rather than in either sweep, because
both of them, the example tool and any future job handler are equally
entitled to get this wrong, and there is one place that sees every
attempt.

It is 1025, not 1024, and the odd-looking number is the point: 1024 is
exactly ThumbSize::Large, the tier proxies are stored at and the tier
one of the two sweeps was detecting on. A floor that admitted 1024
would admit precisely the population this exists to exclude. Written as
a minimum rather than a maximum so the test at each call site is
`edge < MIN_DETECT_EDGE` with no boundary left to get wrong.

ProxyTooSmall is its own error variant rather than an empty result
because the caller has to tell it apart from a failure: nothing is
wrong with the image or the model, and the answer is to go and find
better pixels, not to retry these ones.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 19:40:12 +02:00
dtourolleandClaude Opus 5 4efab496c2 Put the refinement on a slider, per layer
Benchmarks / CPU and I/O (per commit) (push) Successful in 3m27s
Benchmarks / Frame budget (on demand) (push) Skipped
🐳 Android image / Build and push (push) Successful in 3s
Build and test / android-image (push) Successful in 3s
Build and test / Desktop (Linux) (push) Failing after 1h14m30s
Build and test / Layer separation (push) Successful in 43s
Traceability / Requirement traces (push) Failing after 46s
Build and test / Android (aarch64) (push) Successful in 1h8m56s
The evidence was being gathered and spent immediately at one strictness
nobody could see or change. This makes it a control.

`MaskLayer::refine` is shaping, like the feather, and it lives on the layer
for the layer's reason: two layers may sit on the same category and want
different amounts of it, and the model ran once for both.

## What the segmentation now stores

`CategorySummary` keeps the **coarse** mask and the `Refinement` beside it,
rather than a refined mask. That is what gives the control an off position
that is bit-for-bit the model's own weighting, and what stops a strictness
change from needing the model again.

`category_mask_at` borrows at zero and wherever no refinement could be
fitted, so a layer nobody has touched costs nothing over the old path.

The fit moved to the far side of the orientation permutation. The verdict is
a per-pixel field over the same grid as the mask it gates, so fitting it
upright would mean permuting a proxy-sized buffer afterwards to match — a
second rotation, and a second chance to get one wrong. One logit cell is the
same number of pixels either way: the letterbox scales by the longer edge and
a permutation does not change which edge that is.

The two frames became a `Frames` struct rather than six parameters. This
function reads the picture twice for opposite purposes — the model needs it
upright or it recognises far less, the refinement needs the sensor's grid —
and a transposed pair produces a plausible mask over slightly the wrong
pixels, which is the failure this module is most prone to.

## It rebuilds the field, and the signature says so

`refine` is mixed into `subject_signature`. Unlike a feather, which is read
off a field that is already correct, this changes which pixels are in the
mask at all — so it changes the coverage the field is measured from. Omitting
it is the bug where the slider moves and nothing happens until some unrelated
control invalidates the cache.

That puts it in the same cost class as a close or an open, which is why the
row takes `SliderRow::changed` — already once-per-gesture, since that row
takes `SliderTrack`'s `committed` internally — rather than a live stream.

The slider is offered only where there is something to move: a category
source, *and* a refinement the frame actually gave enough to fit. A control
that moves and does nothing is worse than an absent one.

## Two defaults that are deliberately different

A layer added from the panel starts at 4.0, because a category's edges are
twenty proxy pixels wide before anything is done to them and a photographer
adding a sky mask wants the sky rather than the sky plus every chimney in it.

A layer read from a sidecar with no `refine` key starts at **zero**. A file
written before this control existed has to render as it did then, and a
default of 4 on absence would quietly re-grade every stored category mask in
the catalogue. `a_categorys_refine_strictness_survives_and_defaults_off`
holds both halves, and `an_out_of_range_refine_is_clamped` holds the file to
the scale — past the top of it every colour fails and the mask deletes
itself, which reads as lost work rather than as a bad file.

`MAX_REFINE` is dr-pipeline's own constant mirroring
`dr_segment::STRICTNESS_MAX`, following `Falloff` and `Morphology`: this
crate holds the description of an edit and must not depend on the crate that
runs a model. dr-ui is where the two meet, and the only place that converts.

Verified: fmt clean, clippy --workspace -D warnings clean, 488 dr-pipeline
and 60 dr-segment tests.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 18:30:40 +02:00
dtourolleandClaude Opus 5 f87bf6ebc0 Charge a colour mode for its rarity, and keep the verdict
The refinement worked and could not be controlled. Pruning modes below a
share threshold made the flag's removal a *discrete* event: below the line
its Mahalanobis distance was enormous and nothing rescued it, above the line
it sat at zero and nothing removed it. A control over that would appear dead
through most of its travel and then start eating sky.

So the prune is gone. A mode is charged `−ln(share × k)` nats, floored at
zero, and that cost enters both tests — doubled in the chi-square, which is a
squared distance, and directly in the log density. Rarity becomes a distance
rather than a threshold, and the things a photographer wants to remove
separate along it.

Measured on the synthetic frame the tests build: a flag holding 1.6% of the
sky is more than half gone by **2.95 nats** and a cloud bank holding a third
of it survives to **5.75**. The whole interval between them is somewhere a
control can sit. `the_flag_goes_before_the_cloud_does` pins the ordering,
which is the property that makes one slider worth offering at all.

Measured against an even split rather than against one, so raising
`clusters` describes a category more finely without making every colour in it
look rarer. Floored at zero so a dominant mode earns no *discount* — a
bonus there would let the commonest colour outvote a bad chi-square, which is
the one direction this must not bend.

`Refinement` holds the per-pixel verdict, quantised to a byte over ±16 nats —
an eighth of a nat per step, far finer than the narrowest transition the gate
can be asked for, and the same size as the coverage buffer it sits beside.
`apply` is then a smoothstep, and the model is never consulted again.

That is `distance.rs`'s arrangement deliberately: there a signed distance
field is computed once and feather, grow and shrink become arithmetic on it,
"which is what makes those live controls rather than ones that stall on every
drag". Same shape, different field.

The blur moved with it, from the gate to the verdict. Smoothing the evidence
rather than the decision means it is paid for once in `compute` instead of on
every frame of a drag, and it is the better thing to smooth in any case.

`apply` at `STRICTNESS_OFF` returns the weights untouched without reading the
verdict at all. A control whose off position is *very nearly* the unrefined
mask cannot answer "is this helping"; one whose off position is the unrefined
mask can. `strictness_zero_changes_nothing` holds it to that, and
`strictness_is_monotonic` holds the rest of the travel to only ever removing
more — a slider that gave weight back partway up would be one whose direction
nobody could predict.

The synthetic sky is smooth enough to sit on `VARIANCE_FLOOR`, where a real
one has noise and therefore a real spread, which moves every crossing down
together. The ordering survives that; the placement is a calibration. Which
is the honest argument for a control rather than a constant, and why the
default sits at half scale instead of at the flag's measured crossing.

The example sweeps the whole range and writes a frame per nat, because the
question a photographer asks of a slider is where to put it, and that needs
the travel rather than a point on it.

Verified: fmt clean, clippy -D warnings clean, 60 dr-segment tests.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 18:30:40 +02:00
dtourolleandClaude Opus 5 4f4abd335f Cut a scene category back to the pixels that agree with it
A flag in the sky came out weighted as sky, and no feather setting fixed it.

The scene model's logits are `[1, 150, 80, 80]`, so one cell is eight input
pixels; at the 1600px proxy the letterbox scale is 0.4 and **one cell is 20
proxy pixels**, which `rasterise`'s bilinear then spreads across one more
either side. A flag is a handful of cells whose softmax is dominated by the
sky around it. The information was never in the grid, so nothing downstream
of the grid can recover it.

Tiling is the answer for an instance and is not available here: a category
has no bounding box to tile over — sky is wherever the sky is. But the
photograph is at full proxy resolution even though the weights are not, and
it knows exactly where the flag is. So the model says *what*, and the
pixels say *which of them*, which is the division of labour arm C already
draws between the instance model and the watershed.

## Seeds, and why the erosion radius is not a guess

Threshold the weights high, take `signed_distance`, and keep what is more
than 1.5 cells inside. One cell *is* the model's resolution and the bilinear
spreads it across one more, so the band either side of the boundary is smear
rather than evidence. Deriving the radius from `Scene::cell_pixels` rather
than picking a pixel count means it stays right if the proxy edge or the
export changes.

The mirror of that set is a confident *exterior*, free from the same field.

## Dropping small modes is the step that makes it work

Four k-means modes per side, not one Gaussian: sky is blue at the zenith,
white where the cloud is and pale at the horizon, and one blob over all
three rejects two of them.

Then modes holding under 3% of a side are discarded, and without that step
the whole thing fails on the case it was built for. A small flag deep in the
sky has both a high weight and a large distance from the boundary, so it
lands in the interior sample and teaches the model its own colour. It cannot
be excluded geometrically. It can be excluded by share.

Luminance is weighted at a quarter against chrominance for the same reason
the watershed's gradient is. Sky's variance is dominated by luminance, so at
equal weight the distribution is a long bright streak that a mid-grey flag
sits comfortably inside. A flag is separated by chrominance; a cloud is
separated by luminance alone. Not zero, or a dark bird against a bright sky
survives.

## Two tests, because either alone is wrong

Absolute — is this colour plausible under the category, as a chi-square on
the Mahalanobis distance. Comparative — is it likelier inside than outside.
A pixel must pass both.

The absolute test is what catches the flag, whose colour is far from *both*
sides and which the comparative test alone would leave at even odds. The
comparative test is what stops the absolute one needing a constant tuned per
category.

## What this cannot do, written down rather than left to be discovered

An intruder large enough to hold its own mode is kept. By share, a flag over
a fifth of the sky and a cloud bank over a fifth of the sky are the same
object, and colour does not separate them either — a white cloud is as far
from blue sky in chrominance as many intruders are.

So `min_cluster` is not a threshold with a correct value waiting to be
found; it is the trade-off itself, set where a photographic intruder falls.
Both ends are pinned by tests — `a_flag_in_the_sky_is_removed` and
`an_intruder_larger_than_min_cluster_survives` — so that moving the number
reads as moving the trade-off rather than as fixing a bug. The case left
open is a large unrecognised object in a clean category, which wants the
boundary snapped to watershed basins and is a different mechanism.

## Safe to apply without a control

It is subtractive: the output is the input times a factor in `0..=1`. The
worst failure available to it is losing part of a real sky, never gaining a
region, so a blue car below the horizon that was never in the mask cannot be
pulled into it. And a factor in `0..=1` cannot raise a sum, so `scene.rs`'s
partition still holds when every category is refined independently — the
weight taken off the flag lands in the unlisted remainder, which is where a
flag belongs, ADE20K having no class for one.

Every path without the evidence to judge returns the weights untouched and
says which path it took. A refinement that silently did nothing is
indistinguishable from the feature being off, and an empty seed set fitted
to a distribution would reject every pixel.

The signature is deliberately unchanged: categories are addressed by name,
not by index, so a sharper mask cannot create the stale-index hazard the
signature exists to guard against.

The example writes `<prefix>-<category>-refined.ppm` beside the coarse one,
never instead of it — whether this is an improvement is a comparative
judgement and one image cannot answer it.

Verified: fmt clean, clippy -D warnings clean, 57 dr-segment tests.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 18:30:16 +02:00
dtourolle 19b56ad85c Merge: collection ordering, and a range that says where it ends
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

# Conflicts:
#	docs/traceability.md
#	ui/dr-ui/src/collections_ui.rs
#	ui/dr-ui/src/library.rs
#	ui/dr-ui/ui/app.slint
#	ui/dr-ui/ui/library.slint
#	ui/dr-ui/ui/widgets.slint
2026-08-30 16:38:08 +02:00
dtourolle 328fda6f7c Merge: mask a whole category, not just one instance
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

# Conflicts:
#	apps/darkroom-desktop/Cargo.toml
#	docs/traceability.md
2026-08-30 16:37:31 +02:00
dtourolleandClaude Opus 5 df06240b2d Test that the category geometry means what it says
The scene tests so far checked the descriptor and the arithmetic. Neither
would have noticed if `rasterise` put the sky along the bottom of the frame,
because both build their own weights and never ask where those weights land.

Three that do:

- **Weight stays on the side it came from.** Fill the top half of the grid,
  read the top and bottom quarters of the image. A flipped y axis is the
  mistake this code is actually prone to — it is a letterbox inverse, and the
  numbers stay perfectly plausible when it is wrong.
- **No transpose.** The vertical check alone passes under a transpose, which
  maps a top band onto a left band. A horizontal split is what distinguishes
  them, and neither test is worth much without the other.
- **Coverage is a fraction.** A quarter of the cells must read 0.25. The
  scene tab hides a category below half a percent, so an error of a factor of
  the grid size would hide everything or nothing — and both look like the
  model failing rather than the arithmetic.

`Scene::from_weights` is test-only and exists because the property under test
needs weights whose correct destination is known in advance, which no real
inference can provide. It uses a square window so the letterbox is the
identity: any offset these find is the mapping's own rather than the
padding's.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 14:28:38 +02:00
dtourolleandClaude Opus 5 86260b5028 Bind a category layer to its own distance field
A category mask showed nothing and its adjustment covered the whole
photograph. Both from one line: the loop in `MaskPass::rasterise` picks a
distance field by matching `layer.source`, that match named only `Subject`,
and a `Category` layer fell through to `_ => (&self.empty_subject, 0)` — a
1x1 placeholder. No field, so nothing to draw and nothing to confine the
adjustment.

The comment three lines above the arm I missed describes the failure I then
shipped:

    an absent mask that defaults to "everything" would apply the
    adjustment to the whole photograph

There are *two* matches on `layer.source` in that loop — one choosing the
field, one building the params. Adding the category to the second and not
the first compiles, runs, and is wrong in exactly the way the first one
warns about.

## Also: a missing mask must still be the right size

Both model-backed arms of `ensure_subject_fields` used `unwrap_or_default`,
which yields an empty `Vec` when the coverage is gone. `SubjectMasks::upload`
rejects a wrong-sized field and fails the whole batch, so `self.subjects`
becomes `None` and *every* layer in the stack loses its mask — one stale
reference silently unmasking the others.

Pre-existing, and it mattered less when the only model-backed source was a
subject: an instance index goes missing rarely. A category name goes missing
whenever the descriptor is edited, which is a thing the descriptor exists to
allow. A full-size empty field costs one layer instead of all of them.

Neither of these is reachable from a test on this machine — both live past a
GPU adapter and a real segmentation — so they surfaced the only way they
could, by someone opening the app and looking.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 14:28:27 +02:00
dtourolleandClaude Opus 5 763dfd353a Weigh the categories in the same precompute, and mask with them
The scene model shipped with a decoder and no caller. This runs it.

## Beside the instance pass, not instead of it

`compute` now does both on the same upright frame and lays both back down
the same way, so instance masks and category masks index into one grid —
the sensor's. A failure in the scene half is logged and dropped rather than
propagated: no scene model is an ordinary state, and a photograph that can
still be masked by subject should not become unopenable because the
categories are missing.

Categories under half a percent of the frame never reach the cache. A
control that does nothing when moved is worse than an absent one, and each
one it skips is a proxy-sized buffer not allocated.

## The shader needed nothing

A category reaches `dr-gpu` as a soft coverage buffer at proxy resolution,
turned into a distance field — which is exactly what a subject is. So they
share `MODE_SUBJECT`. That is not a shortcut taken for speed: the shader has
no way to tell them apart and no reason to want one. What differs is only
which model produced the coverage, and that has already happened by then.

Feather, falloff, dilation and erosion therefore work on a category on the
day it arrives, because they were never subject-specific.

## Where the weights come from

`scene-model` compiles the graph in and the desktop app takes it; Android
leaves it off and reads the copy `install_bundled_models` unpacks, because
24 MB of constant is worth avoiding in a mobile install and not worth the
plumbing to avoid on a desktop one. Embedded is tried first — a build that
has the weights compiled in should not be silently overridden by a stale
file in a data directory.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 14:02:22 +02:00
dtourolleandClaude Opus 5 485297f0c6 Let a mask cover a whole category, not just one instance
`MaskSource` could say "instance 3 of that segmentation run" but had no way
to say "the sky". Adding `Category { signature, name }` beside `Subject` is
what lets a local adjustment attach to a semantic category at all.

Stored as identity like a subject, and for the same reason: the coverage is
megabytes and is reproducible by running the same model over the same image,
so the sidecar carries what finds it again and the session carries pixels.

## A name rather than an index

An index would be smaller and would match `Subject`. It would also be a bug.
The grouping lives in `models/scene/categories.txt`, which is editable by
design — adding one category to it renumbers every category after it, and
every stored layer would silently start grading something else. A name that
no longer exists is simply not found and the layer reads as stale, which is
the failure that announces itself.

Staleness is otherwise identical to a subject's: the coverage buffer is in
the session, never the sidecar, so a signature from another run points at
pixels that were never computed.

## Two tests, and the second one caught a real shape

Round-tripping the name matters more than usual here, because the whole
argument for storing a name instead of an index is worthless if the sidecar
is what drops it.

The multi-word case is the one worth having: `category = swimming pool` is
written on one line, and a reader splitting on whitespace would have
truncated it to a category no model has — a layer that silently masks
nothing. `category` is also its own key rather than a reuse of `class`,
because a file conflating them would round-trip a subject into a category.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 14:02:08 +02:00
dtourolleandClaude Opus 5 d70dcf78d1 Merge: recover a damaged catalog, and capture a crash locally
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 13:45:18 +02:00
dtourolle c48896bd95 Merge: touch selection and drag, from the gallery-selection branch
Verified before merge: fmt clean, clippy -D warnings clean, 563 dr-ui tests.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

# Conflicts:
#	docs/traceability.md
2026-08-30 13:45:18 +02:00
dtourolleandClaude Opus 5 8df6000e4b Decode the scene model into per-category weights
The weights landed last commit with nothing to read them. This is the
decoder, and the shape of it follows from one property worth stating
before the code: the categories must partition the image.

## Why a partition, and not a mask per category

The scene tab applies one grade to every pixel of a category — lift the
sky, desaturate foliage — and both grades meet at the horizon. If each
category carried an independent mask, feathering them outward would make
the boundary band belong to both, so both grades would land there and
every horizon would acquire a visible seam. Feathering has to *blend*
there, not accumulate.

So `marginalise` takes one softmax over all 150 channels and sums within
each category. Grouping cannot change a total of one, so the listed
categories plus the unlisted remainder sum to one at every pixel, by
construction rather than by normalising afterwards. `parse_categories`
refuses a descriptor that claims a class twice, because that is the one
input that would quietly make the property untrue.

## The descriptor is data, and hand-written

`models/scene/categories.txt` groups ADE20K's 150 classes into the eight
a photographer would recognise. It is a file rather than a table in Rust
for the reason `models/LICENCE.md` predicted — a vocabulary is model
metadata — and it is line-oriented with comments rather than JSON like
the `.classes.json` beside it, because that file is generated and this
one is argued. Why `swimming pool` is water and not architecture belongs
next to the line that says so.

Classes are named, not indexed. An index is silently wrong after a
re-export; a name is loudly wrong, and the loader refuses one the model
does not have.

## Resolution, kept visible

`Scene` holds the native 80×80 logit grid and resamples on demand rather
than upsampling once at load. The coarseness is real — it is what the
graph produces — and a type that hides it behind an early resize invites
callers to expect detail that was never there. `rasterise` is where the
letterbox inverse lives, once.

`Letterbox` and `Window` become `pub(crate)` and `to_proto` generalises
to `to_grid`, because both dense outputs this crate reads are an even
fraction of the same letterboxed square and differ only in the divisor.

## Verified by looking, which is the only way this gets verified

`examples/scene.rs` writes the photograph dimmed outside each category. A
transposed axis or an off-by-one in the inverse produces perfectly
plausible weights over slightly the wrong pixels, and no unit test
catches that. On an indoor frame the person mask lands on the person,
including the outstretched arm, and sky reads ~5% against a bright
ceiling.

It doubles as the benchmark, because every timing quoted while this model
was chosen came off a laptop compiling other things and none of them
belong in a document.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 10:48:37 +02:00
dtourolleandClaude Opus 5 8eeb9ba0f6 Offer the backup, and then the rebuild, when the index turns out to be damaged
NFR-R6 asks for an integrity check at startup and two offers behind it, and
none of it existed. `PRAGMA integrity_check` appeared nowhere in the tree,
`Catalog::open` was `open` → `configure` → `migrate` → `backfill` and nothing
else, and corruption therefore surfaced as whatever rusqlite error the first
unlucky query happened to produce — "database disk image is malformed"
attached to a thumbnail refresh, elided into a 34px banner, over an empty
grid saying "No images found · Check the library folder". Two messages that
disagreed, and no way forward but deleting catalog.sqlite by hand.

The property that makes the second offer real was already here and load-
bearing: the catalog is an index, not a source of truth, rebuildable from
sources plus sidecars (invariant §5.2.4, cited by schema.rs, trash.rs and
lib.rs). And sync.rs already knew how to take a coherent snapshot of a WAL
database. What was missing was the check, the type, and the conversation.

Four pieces:

**The type.** `CatalogError::Corrupt`, and — the part that makes it worth
having — a hand-written `From<rusqlite::Error>` that classifies rather than
wraps. `SQLITE_CORRUPT` and `SQLITE_NOTADB` become `Corrupt` wherever they
arise, so a background job that trips over the damage first reports the same
thing the startup check would have. `SQLITE_IOERR` and `SQLITE_BUSY`
deliberately do not: a dropped network mount is a different problem, and
telling someone to rebuild their index would be a wrong answer delivered
confidently.

**The check.** `Catalog::open_verified`, `quick_check` before the open rather
than after, because opening runs migrations and a damaged catalog with an
intact header would otherwise have structure rewritten on top of structure
that is already wrong. Bound to `open_verified` and not to `open`: the check
reads every page, which is affordable once at startup where a user can answer
a question, and not affordable on the dozens of opens a session's background
tasks make.

**The backup.** NFR-R2's second clause, taken between `configure` and
`migrate` in `Catalog::open`. A migration is the one routine operation that
rewrites table structure, so it is the likeliest way this file becomes
unreadable, and it is the last moment the pre-migration state exists to be
copied. Three generations, through SQLite's backup API after a TRUNCATE
checkpoint — never `fs::copy`, which on a WAL database backs up a state older
than the catalog and possibly torn. A failure to take the copy is logged, not
raised: a full disk must not be what makes a library unopenable.

**The conversation.** The first line of the dialogue is that the photographs
and the edits are safe, before the diagnosis, because that is the question the
user is actually asking. Then the two offers, which are *not* interchangeable
and are not presented as if they were: a restore keeps collections, and a
rebuild cannot, because a manual collection is a set of images assembled by
hand and nothing in the filesystem records it (docs/catalog.md §8.1). The
labels say so, and the rebuild does not take the affirmative styling while a
restore is on the table.

One thing that is a fix rather than a feature: `show_catalog_now` now gates
the scan. `Catalog::open` succeeds on a file whose header survived, so the
scan that used to start immediately afterwards would write folder ETags and
image rows into damaged pages in the seconds while the user was still reading
the question — turning a file that had a backup into one where the backup is
the only copy left.

Restore also deletes the damaged catalog's `-wal` and `-shm`. That step is
easy to leave out and fatal to leave out: a journal belonging to the old file,
sitting beside the new one under the same name, is replayed into it on the
next open. That is not a restore, it is a fresh corruption with the evidence
gone.

Tested by corrupting a fixture catalog — 500 images and a collection, then
every page past the second overwritten — and driving both branches. The
restore is asserted on the collection, because a collection is precisely what
distinguishes the two paths; the rebuild on the damaged file being kept and
the next open producing an empty catalog at the current schema. Plus the
`SQLITE_NOTADB` presentation, a damaged backup being refused rather than
installed, and a v1 catalog whose pre-migration backup comes back reading
v1 rather than v11.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 10:34:12 +02:00
dtourolleandClaude Opus 5 99563b33f7 Record the one clause of FR-PLG-8 that is built, and say what it is short of
FR-PLG-8 reads as unbuilt, and most of it is: no aggregated missing-plugin
notice, no catalog-wide view, no export gate, no mark on an image whose
operation is unavailable. But its opening sentence is a claim about existing
behaviour — "the sidecar already preserves lines it does not understand
verbatim and writes them back untouched" — and it goes on to say that property
"is now load-bearing and shall be treated as such".

Two tests treat it as such, and neither was tagged. `sidecar.rs` keeps an
unknown operation across a parse-and-write, and keeps it out of the edit graph
so that preserving it is safe rather than merely tidy. Both would fail if the
verbatim path were removed, which is what CONTRIBUTING.md asks a tag to mean.

The tag sits on the two tests rather than on the module, so the matrix points
at the clause that is closed rather than at the requirement as a whole.

It is still short of the requirement's own acceptance criterion, and the tag
comment says so: FR-PLG-8 asks that a sidecar written with a plugin, opened and
saved without it, be byte-identical to the original, and the test asserts
`contains`. Both halves exist separately — `writing_the_same_state_twice_is_byte_identical`
proves byte identity for content this build understands — and nothing joins
them into the single claim the requirement makes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 10:20:22 +02:00
dtourolleandClaude Opus 5 62e585844a Untag FR-PLAT-AND-1 from the two places that record its absence
FR-PLAT-AND-1 requires that library access on Android be obtained exclusively
through the Storage Access Framework — a tree granted with
ACTION_OPEN_DOCUMENT_TREE, persisted with takePersistableUriPermission,
enumerated with DocumentsContract. None of those three appears anywhere.

What carried the tag was a type and a negation.

`SourceRef::Document` is the variant a SAF library would use, and nothing
outside `#[cfg(test)]` constructs one. `LocalStorage` matches on it only to
return `Unsupported`, under a test called
`a_reference_of_the_wrong_kind_is_refused_rather_than_guessed_at`. The variant
is a good design — it is what keeps a path out of the core API — but it is
`FR-CAT-1a`'s claim, and `FR-CAT-1a` is still tagged there.

`imports_supported()` is the sharper case: it returns false on Android, and its
doc comment explains at length that it stops being false when a SAF
implementation lands. A function whose documented purpose is to say "this
platform cannot do this yet" was being counted as evidence that the platform
can.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 10:18:45 +02:00
dtourolleandClaude Opus 5 421a47f1eb Untag FR-CAT-13, which no XMP is read or written to satisfy
FR-CAT-13 asks for standard XMP sidecars read and written — ratings, colour
labels, keywords and hierarchical subjects, title, description, copyright, GPS,
in `xmp:`/`dc:`/`lr:` schemas — so that other tools interoperate. Its one tag
was the module header of `dr-catalog/src/keywords.rs`.

That module stores keywords in SQLite. It names `dc:subject` twice, both times
in prose explaining why a keyword's text is the fact rather than its row id,
which is a good reason to have written it that way and not evidence of an XMP
implementation. Nothing in the tree parses or emits XMP: `dr-export`'s metadata
module writes EXIF and says in its own header that IPTC and XMP are named by
FR-EXP-8 and neither is read.

`dr-preset-xmp` is the crate whose name most invites the mistake. It reads
Lightroom `.xmp` *presets* — develop settings — under FR-DEV-6, and knows
nothing about the metadata schemas FR-CAT-13 is about.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-30 10:18:10 +02:00