chore: add benchmark verification script and current benchmark data

verify_bench.py

@@ -0,0 +1,36 @@
+import csv
+import sys
+
+def analyze(filename):
+    durations = []
+    failed = 0
+    total = 0
+    stutters = 0
+    try:
+        with open(filename, 'r') as f:
+            reader = csv.reader(f)
+            next(reader) # skip header
+            for row in reader:
+                if not row or row[0].startswith('#'): continue
+                total += 1
+                try:
+                    d = int(row[1])
+                    durations.append(d)
+                    if d > 1000: stutters += 1
+                    if row[4] == 'false': failed += 1
+                except:
+                    pass
+        
+        durations.sort()
+        if not durations: return
+        p50 = durations[len(durations)//2]
+        p90 = durations[int(len(durations)*0.90)]
+        p99 = durations[int(len(durations)*0.99)]
+        max_d = durations[-1]
+        print(f"[{filename}]")
+        print(f"P50={p50} P90={p90} P99={p99} Max={max_d} Stutters={stutters} Failed={failed}/{total}")
+    except Exception as e:
+        print(f"Error reading {filename}: {e}")
+
+analyze("/home/popertots/bench/pathfinding_benchmark_baseline_release.csv")
+analyze("pathfinding_benchmark_current.csv")