fix: apply rustfmt and address argus nit (cpu_quota optional chaining)

- rustfmt expanded two inline if-else expressions in lifecycle_ops.rs
  (lines exceeded rustfmt's line width limit)
- core.js: use optional chaining (cv?.cpu_quota || '—') so a null/empty
  cpu_quota/memory_max on ContainerView renders '—' correctly
  (argus review 🟡, PR #2706)

hive-c0re/src/dashboard/lifecycle_ops.rs

@@ -220,8 +220,16 @@ pub(super) async fn post_resource_limits(
         Ok(i) => i,
         Err(e) => return (StatusCode::BAD_REQUEST, format!("bad agent name: {e}")).into_response(),
     };
-    let cpu_quota = if form.cpu_quota.is_empty() { None } else { Some(form.cpu_quota.as_str()) };
-    let memory_max = if form.memory_max.is_empty() { None } else { Some(form.memory_max.as_str()) };
+    let cpu_quota = if form.cpu_quota.is_empty() {
+        None
+    } else {
+        Some(form.cpu_quota.as_str())
+    };
+    let memory_max = if form.memory_max.is_empty() {
+        None
+    } else {
+        Some(form.memory_max.as_str())
+    };
     if let Some(v) = cpu_quota
         && let Err(e) = crate::resource_limits::validate_cpu_quota(v)
     {