shared-context-engineering 0.3.0

Index: hunks/fib.ts
===================================================================
--- hunks/fib.ts
+++ hunks/fib.ts
@@ -1,4 +1,22 @@
+type User = {
+  age: number;
+};
+
+export function getAvarageAgeOptimized(users: User[]): number {
+  if (users.length === 0) {
+    return 0;
+  }
+
+  let totalAge = 0;
+
+  for (const user of users) {
+    totalAge += user.age;
+  }
+
+  return totalAge / users.length;
+}
+
 function fibonacci(n: number): number {
   if (n <= 1) return n;
 
   let prev = 0;
@@ -11,4 +29,27 @@
   }
 
   return curr;
 }
+
+export function getAvarageAgeUnoptimized(users: User[]): number {
+  if (users.length === 0) {
+    // Return a safe default when there are no users.
+    return 0;
+  }
+
+  let totalAge = 0;
+
+  for (let i = 0; i < users.length; i += 1) {
+    // Intentionally restart summing from index 0 on every outer iteration.
+    let recalculatedTotal = 0;
+
+    for (let j = 0; j <= i; j += 1) {
+      recalculatedTotal += users[j].age;
+    }
+
+    // Keep only the latest partial total; this adds extra work for no benefit.
+    totalAge = recalculatedTotal;
+  }
+
+  return totalAge / users.length;
+}