style(pf-vdisplay): rustfmt under the pinned 1.96.0 toolchain

The W6.2 pf-vdisplay extraction (27a5d8da) committed six spots that the pinned
rustfmt (rust-toolchain.toml = 1.96.0) reformats — a short closure collapse and
chain-call wrapping. No semantic change; makes cargo fmt --all --check green so
the combined push does not land CI red on pre-existing format drift.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/pf-vdisplay/src/vdisplay/linux/gamescope.rs

@@ -1397,9 +1397,7 @@ fn spawn(w: u32, h: u32, hz: u32, cmd: Option<&str>, log: &std::path::Path) -> R
         .filter(|s| !s.trim().is_empty())
         // Read the env fallback under the shared env lock so it can't race a concurrent session's
         // `set_var` of the same key (security-review 2026-06-28 #7).
-        .or_else(|| {
-            crate::with_env_lock(|| std::env::var("PUNKTFUNK_GAMESCOPE_APP").ok())
-        })
+        .or_else(|| crate::with_env_lock(|| std::env::var("PUNKTFUNK_GAMESCOPE_APP").ok()))
         .filter(|s| !s.trim().is_empty())
         .unwrap_or_else(|| "sleep infinity".to_string());
     // Dedicated-launch command shaping (Part B): a Steam URI runs with `-silent` so the game is the

crates/pf-vdisplay/src/vdisplay/linux/mutter.rs

@@ -133,10 +133,7 @@ impl VirtualDisplay for MutterDisplay {
             (mode.width, mode.height),
             crate::policy::Identity::Shared,
         );
-        let remembered_scale = crate::identity::scales()
-            .lock()
-            .unwrap()
-            .get(&scale_key);
+        let remembered_scale = crate::identity::scales().lock().unwrap().get(&scale_key);
         if let Some(scale) = remembered_scale {
             tracing::info!(scale, "mutter: reapplying the client's saved display scale");
         }