fix: cache calculation

src/oracle.rs

@@ -51,7 +51,11 @@ impl TierResult {
             capacity_blocks,
             hits,
             misses,
-            hit_rate: if total == 0 { 0.0 } else { hits as f64 / total as f64 },
+            hit_rate: if total == 0 {
+                0.0
+            } else {
+                hits as f64 / total as f64
+            },
         }
     }
 }
@@ -68,12 +72,7 @@ pub fn analyze(records: &[RequestRecord], capacity_blocks: u64) -> OracleResult
 
     // 1. Unlimited cache
     let unlimited_hits = run_unlimited(records);
-    let unlimited = TierResult::from_counts(
-        "unlimited",
-        u64::MAX,
-        unlimited_hits,
-        total_blocks,
-    );
+    let unlimited = TierResult::from_counts("unlimited", u64::MAX, unlimited_hits, total_blocks);
 
     // 2. Precompute next-use index for Belady
     let next_use = build_next_use(records);