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-pipeline/src/ops/noise_reduction.rs

@@ -820,7 +820,13 @@ mod tests {
         // Everything else about the two must match, or one axis is filtered
         // harder than the other and a round blotch comes out oval.
         assert_eq!(passes[0].radius, passes[1].radius);
-        for name in ["radius", "inv_spatial", "guide_k", "chroma_k", "noise_floor"] {
+        for name in [
+            "radius",
+            "inv_spatial",
+            "guide_k",
+            "chroma_k",
+            "noise_floor",
+        ] {
             let of = |p: &DetailPass| {
                 p.uniforms
                     .iter()