Format the tree the way the gate asks for it

`cargo fmt --check` is a required step and had drifted across 45 files. Most of
it arrived this week: several operations were written in parallel worktrees and
merged by hand, and a hand-merge resolves conflicts without ever running the
formatter over the result.

No behaviour changes — this is `cargo fmt --all` and nothing else, kept as its
own commit so the next reader can skip it wholesale rather than search it for
one that matters.

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

core/dr-decode/src/lib.rs

@@ -375,7 +375,10 @@ fn rawler_location(gps: &rawler::exif::ExifGPS) -> Option<Location> {
         (r.d != 0).then(|| r.n as f64 / r.d as f64)
     }
 
-    fn degrees(dms: &[rawler::formats::tiff::Rational; 3], reference: Option<&String>) -> Option<f64> {
+    fn degrees(
+        dms: &[rawler::formats::tiff::Rational; 3],
+        reference: Option<&String>,
+    ) -> Option<f64> {
         let d = ratio(&dms[0])? + ratio(&dms[1])? / 60.0 + ratio(&dms[2])? / 3600.0;
         // South and west are stored as positive magnitudes with a letter.
         let negative = matches!(
@@ -534,7 +537,10 @@ pub fn decode(bytes: &[u8]) -> Result<RawImage, DecodeError> {
     // both callers ask the same object for it.
     let profile = profile::CameraProfile::extract(&image, &dng);
     let color_matrix = profile.as_ref().and_then(|p| p.cam_to_srgb());
-    let wb_coeffs = sane_wb(image.wb_coeffs, profile.as_ref().map(|p| p.xyz_to_cam()).as_ref());
+    let wb_coeffs = sane_wb(
+        image.wb_coeffs,
+        profile.as_ref().map(|p| p.xyz_to_cam()).as_ref(),
+    );
 
     // The rendering half of the profile (FR-DEV-3e). rawler's cleaned strings
     // are preferred where it has them — they are what the shipped database is