fix nesting depth calculation, add radar overlay to compare page, fix stale docs

Author: cs01

data/a1-two-sum-c.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 28,
-    "maxNesting": 8,
+    "maxNesting": 4,
     "avgIdentifierLength": 3.5,
     "visualDensity": 0.636
   }

data/a1-two-sum-cpp.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 29,
-    "maxNesting": 6,
+    "maxNesting": 3,
     "avgIdentifierLength": 4.4,
     "visualDensity": 0.732
   }

data/a1-two-sum-go.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 18,
-    "maxNesting": 1,
+    "maxNesting": 3,
     "avgIdentifierLength": 3.7,
     "visualDensity": 0.749
   }

data/a1-two-sum-java.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 32,
-    "maxNesting": 8,
+    "maxNesting": 4,
     "avgIdentifierLength": 4.8,
     "visualDensity": 0.684
   }

data/a1-two-sum-kotlin.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 30,
-    "maxNesting": 4,
+    "maxNesting": 2,
     "avgIdentifierLength": 4.2,
     "visualDensity": 0.715
   }

data/a1-two-sum-milo.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 25,
-    "maxNesting": 6,
+    "maxNesting": 3,
     "avgIdentifierLength": 3.7,
     "visualDensity": 0.665
   }

data/a1-two-sum-python.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 32,
-    "maxNesting": 6,
+    "maxNesting": 3,
     "avgIdentifierLength": 4.1,
     "visualDensity": 0.681
   }

data/a1-two-sum-rust.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 28,
-    "maxNesting": 6,
+    "maxNesting": 3,
     "avgIdentifierLength": 4.2,
     "visualDensity": 0.705
   }

data/a1-two-sum-swift.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 26,
-    "maxNesting": 6,
+    "maxNesting": 3,
     "avgIdentifierLength": 3.7,
     "visualDensity": 0.643
   }

data/a1-two-sum-zig.json

@@ -14,7 +14,7 @@
   },
   "readability": {
     "avgLineLength": 29,
-    "maxNesting": 6,
+    "maxNesting": 3,
     "avgIdentifierLength": 4.5,
     "visualDensity": 0.718
   }