Run the formatter over the face branch before it reaches CI

The merge of the SCRFD/MobileFaceNet work brought 69 rustfmt diffs across
dr-catalog, dr-face and dr-ui with it, so `cargo fmt --all -- --check` fails
on master and the Desktop job stops at its Format step — before clippy, the
tests or the release build have run at all. That makes the whole desktop
half of CI blind: a real compile error behind this would look exactly the
same from the outside. There was nothing behind it, as it turns out — with
the formatting fixed, clippy, the test suite and the release build all pass.

Every .rs hunk is `cargo fmt --all` on the pinned 1.92.0 toolchain, not a
hand edit, but it is worth being precise about what that moved, because it
is more than whitespace. Besides reflowing signatures and call chains,
rustfmt reordered the `pub mod` and `pub use` items in dr-face/src/lib.rs so
the `#[cfg(feature = "inference")]` entries sort in place, added the trailing
semicolon inside `let ... else { return }` bodies in identity_ui.rs, wrapped
a bare closure body in braces in cluster.rs, adjusted trailing commas, and
dropped a stray blank line at the end of identity_ui.rs. All of it is
semantically inert; none of it changes behaviour.

docs/traceability.md rides along because it has to. The matrix records each
TRACES tag by line number, and reflowing develop.rs, lib.rs, faces.rs,
identity.rs and identity_ui.rs moved them — FR-CAT-8, FR-CAT-9, FR-CULL-10,
FR-DEV-3, FR-DEV-3a and FR-DEV-3c all shift by a line or two. The matrix was
verified up to date on d777f7f before this commit, so this is drift these
formatting changes introduced, not pre-existing staleness being swept up.
Leaving it for a follow-up commit would hand traceability-check.yml a
failure caused entirely by a whitespace change.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

ui/dr-ui/src/identity.rs

@@ -61,7 +61,10 @@ impl PersonRow {
     /// — the exact conflation the confirmed/suggested split exists to prevent.
     pub fn display_name(&self) -> String {
         if self.name.is_empty() {
-            format!("Unnamed ({} faces)", self.confirmed_faces + self.suggested_faces)
+            format!(
+                "Unnamed ({} faces)",
+                self.confirmed_faces + self.suggested_faces
+            )
         } else {
             self.name.clone()
         }
@@ -122,7 +125,10 @@ pub struct IdentityView {
 }
 
 /// Read the people rail.
-pub fn load_people(catalog: &Catalog, model_id: &str) -> Result<IdentityView, dr_catalog::CatalogError> {
+pub fn load_people(
+    catalog: &Catalog,
+    model_id: &str,
+) -> Result<IdentityView, dr_catalog::CatalogError> {
     let conn = catalog.connection();
     let people = faces::people(conn)?
         .into_iter()
@@ -410,10 +416,7 @@ pub fn rename(
 /// The operation the screen exists to make cheap. A cluster that is simply
 /// right — the common case for a well-photographed person — should cost one
 /// click, not forty.
-pub fn confirm_all(
-    catalog: &Catalog,
-    person: PersonId,
-) -> Result<usize, dr_catalog::CatalogError> {
+pub fn confirm_all(catalog: &Catalog, person: PersonId) -> Result<usize, dr_catalog::CatalogError> {
     let conn = catalog.connection();
     let mut n = 0;
     for f in faces::for_person(conn, person, true)? {
@@ -662,7 +665,8 @@ mod tests {
         let c = catalog();
         let i1 = image(&c, 1);
         let i2 = image(&c, 2);
-        let a = faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
+        let a =
+            faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
         faces::record_detections(c.connection(), i2, "w600k_mbf", 1024, &[face(2)]).unwrap();
 
         let anna = faces::create_person(c.connection(), "Anna").unwrap();
@@ -672,7 +676,10 @@ mod tests {
         assert_eq!(view.people.len(), 1);
         assert_eq!(view.people[0].name, "Anna");
         assert_eq!(view.unassigned, 1);
-        assert!(!view.calibrated, "a fresh library has no fitted calibration");
+        assert!(
+            !view.calibrated,
+            "a fresh library has no fitted calibration"
+        );
     }
 
     #[test]
@@ -681,9 +688,12 @@ mod tests {
         let i1 = image(&c, 1);
         let i2 = image(&c, 2);
         let i3 = image(&c, 3);
-        let a = faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
-        let b = faces::record_detections(c.connection(), i2, "w600k_mbf", 1024, &[face(2)]).unwrap();
-        let d = faces::record_detections(c.connection(), i3, "w600k_mbf", 1024, &[face(3)]).unwrap();
+        let a =
+            faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
+        let b =
+            faces::record_detections(c.connection(), i2, "w600k_mbf", 1024, &[face(2)]).unwrap();
+        let d =
+            faces::record_detections(c.connection(), i3, "w600k_mbf", 1024, &[face(3)]).unwrap();
 
         let anna = faces::create_person(c.connection(), "Anna").unwrap();
         faces::confirm(c.connection(), a[0], anna).unwrap();
@@ -692,7 +702,12 @@ mod tests {
 
         assert_eq!(confirm_all(&c, anna).unwrap(), 2);
         assert_eq!(confirm_all(&c, anna).unwrap(), 0, "should be idempotent");
-        assert_eq!(faces::for_person(c.connection(), anna, false).unwrap().len(), 3);
+        assert_eq!(
+            faces::for_person(c.connection(), anna, false)
+                .unwrap()
+                .len(),
+            3
+        );
     }
 
     /// The correction must stick. Splitting a face off and then re-running
@@ -702,16 +717,24 @@ mod tests {
         let c = catalog();
         let i1 = image(&c, 1);
         let i2 = image(&c, 2);
-        let a = faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
-        let b = faces::record_detections(c.connection(), i2, "w600k_mbf", 1024, &[face(2)]).unwrap();
+        let a =
+            faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
+        let b =
+            faces::record_detections(c.connection(), i2, "w600k_mbf", 1024, &[face(2)]).unwrap();
 
         let anna = faces::create_person(c.connection(), "Anna").unwrap();
         faces::confirm(c.connection(), a[0], anna).unwrap();
         faces::suggest(c.connection(), b[0], anna, 0.95).unwrap();
 
         let bob = split_off(&c, anna, &[b[0]], "Bob").unwrap();
-        assert_eq!(faces::for_person(c.connection(), bob, false).unwrap().len(), 1);
-        assert_eq!(faces::for_person(c.connection(), anna, true).unwrap().len(), 1);
+        assert_eq!(
+            faces::for_person(c.connection(), bob, false).unwrap().len(),
+            1
+        );
+        assert_eq!(
+            faces::for_person(c.connection(), anna, true).unwrap().len(),
+            1
+        );
 
         // The next clustering pass tries again and is refused.
         assert!(
@@ -735,8 +758,10 @@ mod tests {
         let c = catalog();
         let i1 = image(&c, 1);
         let i2 = image(&c, 2);
-        let a = faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
-        let b = faces::record_detections(c.connection(), i2, "w600k_mbf", 1024, &[face(2)]).unwrap();
+        let a =
+            faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
+        let b =
+            faces::record_detections(c.connection(), i2, "w600k_mbf", 1024, &[face(2)]).unwrap();
         let anna = faces::create_person(c.connection(), "Anna").unwrap();
         let annie = faces::create_person(c.connection(), "Annie").unwrap();
         faces::confirm(c.connection(), a[0], anna).unwrap();
@@ -752,8 +777,8 @@ mod tests {
     fn named_boxes_come_back_in_proxy_pixels() {
         let c = catalog();
         let img = image(&c, 1);
-        let ids = faces::record_detections(c.connection(), img, "w600k_mbf", 1024, &[face(1)])
-            .unwrap();
+        let ids =
+            faces::record_detections(c.connection(), img, "w600k_mbf", 1024, &[face(1)]).unwrap();
         let anna = faces::create_person(c.connection(), "Anna").unwrap();
         faces::confirm(c.connection(), ids[0], anna).unwrap();
 
@@ -777,12 +802,14 @@ mod tests {
     fn a_suggested_person_does_not_name_a_region() {
         let c = catalog();
         let img = image(&c, 1);
-        let ids = faces::record_detections(c.connection(), img, "w600k_mbf", 1024, &[face(1)])
-            .unwrap();
+        let ids =
+            faces::record_detections(c.connection(), img, "w600k_mbf", 1024, &[face(1)]).unwrap();
         let anna = faces::create_person(c.connection(), "Anna").unwrap();
         faces::suggest(c.connection(), ids[0], anna, 0.95).unwrap();
 
-        assert!(named_boxes_for_image(&c, img, 1024, 683).unwrap().is_empty());
+        assert!(named_boxes_for_image(&c, img, 1024, 683)
+            .unwrap()
+            .is_empty());
 
         // Confirming it makes the name appear.
         faces::confirm(c.connection(), ids[0], anna).unwrap();
@@ -794,12 +821,14 @@ mod tests {
     fn an_unnamed_group_does_not_name_a_region() {
         let c = catalog();
         let img = image(&c, 1);
-        let ids = faces::record_detections(c.connection(), img, "w600k_mbf", 1024, &[face(1)])
-            .unwrap();
+        let ids =
+            faces::record_detections(c.connection(), img, "w600k_mbf", 1024, &[face(1)]).unwrap();
         let nameless = faces::create_person(c.connection(), "").unwrap();
         faces::confirm(c.connection(), ids[0], nameless).unwrap();
 
-        assert!(named_boxes_for_image(&c, img, 1024, 683).unwrap().is_empty());
+        assert!(named_boxes_for_image(&c, img, 1024, 683)
+            .unwrap()
+            .is_empty());
     }
 
     #[test]
@@ -817,7 +846,11 @@ mod tests {
             height: 4,
             rgba,
         };
-        assert!((mean_luma(&crop) - 1.0).abs() < 1e-3, "{}", mean_luma(&crop));
+        assert!(
+            (mean_luma(&crop) - 1.0).abs() < 1e-3,
+            "{}",
+            mean_luma(&crop)
+        );
     }
 
     #[test]
@@ -835,7 +868,8 @@ mod tests {
     fn deleting_everything_empties_the_screen() {
         let c = catalog();
         let i1 = image(&c, 1);
-        let a = faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
+        let a =
+            faces::record_detections(c.connection(), i1, "w600k_mbf", 1024, &[face(1)]).unwrap();
         let anna = faces::create_person(c.connection(), "Anna").unwrap();
         faces::confirm(c.connection(), a[0], anna).unwrap();