fix: satisfy the Rust 1.99 clippy

src-tauri/src/acp/scratch_dir.rs

@@ -261,6 +261,8 @@ pub fn scratch_root() -> PathBuf {
 /// codeg itself changes its mind about where the short root lives. Sweeping
 /// only today's answer would strand yesterday's directories exactly the way
 /// this module's own docs warn about.
+// Windows has no short root, so the list of candidates is one long there.
+#[cfg_attr(windows, allow(clippy::single_element_loop))]
 fn sweep_roots() -> Vec<PathBuf> {
     let mut roots = vec![scratch_root()];
     for candidate in [

src-tauri/src/browser/services.rs

@@ -63,7 +63,7 @@ struct ProbeSlot;
 impl ProbeSlot {
     fn take() -> Option<Self> {
         IN_FLIGHT_PROBES
-            .fetch_update(Ordering::AcqRel, Ordering::Acquire, |held| {
+            .try_update(Ordering::AcqRel, Ordering::Acquire, |held| {
                 (held < MAX_IN_FLIGHT_PROBES).then_some(held + 1)
             })
             .ok()

src-tauri/src/workspace_state/mod.rs

@@ -1507,7 +1507,7 @@ pub async fn stop_workspace_state_stream_core(
         // between start and stop bookkeeping) must not underflow and wedge
         // the stream in permanent full-scan mode.
         if wants_tree_git {
-            let _ = entry.full_subscribers.fetch_update(
+            let _ = entry.full_subscribers.try_update(
                 Ordering::AcqRel,
                 Ordering::Acquire,
                 |count| count.checked_sub(1),