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-gpu/src/detail.rs

@@ -123,8 +123,7 @@ impl Intermediates {
                 // output these are never handed to a compositor, and no
                 // COPY_SRC, because nothing reads them back — that is the
                 // point (ARCH §6.1).
-                usage: wgpu::TextureUsages::STORAGE_BINDING
-                    | wgpu::TextureUsages::TEXTURE_BINDING,
+                usage: wgpu::TextureUsages::STORAGE_BINDING | wgpu::TextureUsages::TEXTURE_BINDING,
                 view_formats: &[],
             });
             let view = texture.create_view(&Default::default());