scoreboard: 147/300 (49.0%) wide, up from 114/300 baseline

Math 40% / Number 73% / String 33% = 147/300 (49.0%), +33 tests since
session-3 start. Wall time 277s (vs prior 593s baseline → 2.14× via
harness cache).

Top remaining failure modes (141 fails, 12 timeouts):
- 115× Test262Error (assertion failed) — numeric precision at
  MAX_VALUE/MIN_VALUE boundary, (new Number()).constructor chain,
  toFixed edge cases, String.fromCharCode code-point ranges
- 34× TypeError: not a function — still the missing Math trig
  primitives (filed as Blocker)
- 12× Timeout — long-running String loops

lib/js/test262-scoreboard.json

@@ -1,12 +1,12 @@
 {
   "totals": {
-    "pass": 115,
-    "fail": 174,
+    "pass": 147,
+    "fail": 141,
     "skip": 1597,
-    "timeout": 11,
+    "timeout": 12,
     "total": 1897,
     "runnable": 300,
-    "pass_rate": 38.3
+    "pass_rate": 49.0
   },
   "categories": [
     {
@@ -35,15 +35,15 @@
     {
       "category": "built-ins/Number",
       "total": 340,
-      "pass": 44,
-      "fail": 52,
+      "pass": 74,
+      "fail": 22,
       "skip": 240,
       "timeout": 4,
-      "pass_rate": 44.0,
+      "pass_rate": 74.0,
       "top_failures": [
         [
           "Test262Error (assertion failed)",
-          52
+          22
         ],
         [
           "Timeout",
@@ -54,30 +54,30 @@
     {
       "category": "built-ins/String",
       "total": 1223,
-      "pass": 31,
-      "fail": 63,
+      "pass": 33,
+      "fail": 60,
       "skip": 1123,
-      "timeout": 6,
-      "pass_rate": 31.0,
+      "timeout": 7,
+      "pass_rate": 33.0,
       "top_failures": [
         [
           "Test262Error (assertion failed)",
-          53
+          50
         ],
         [
           "Timeout",
-          6
+          7
         ],
         [
           "ReferenceError (undefined symbol)",
           2
         ],
         [
-          "Unhandled: Not callable: \\\\\\",
+          "Unhandled: Not callable: {:__proto__ {:toLowerCase <lambda(&rest, args)",
           2
         ],
         [
-          "Unhandled: Not callable: {:__proto__ {}} (kont=6 frames)\\",
+          "Unhandled: Not callable: \\\\\\",
           2
         ]
       ]
@@ -96,42 +96,38 @@
   "top_failure_modes": [
     [
       "Test262Error (assertion failed)",
-      128
+      95
     ],
     [
       "TypeError: not a function",
-      37
+      38
     ],
     [
       "Timeout",
-      11
+      12
     ],
     [
       "ReferenceError (undefined symbol)",
       2
     ],
+    [
+      "Unhandled: Not callable: {:__proto__ {:toLowerCase <lambda(&rest, args)",
+      2
+    ],
     [
       "Unhandled: Not callable: \\\\\\",
       2
     ],
-    [
-      "Unhandled: Not callable: {:__proto__ {}} (kont=6 frames)\\",
-      2
-    ],
     [
       "SyntaxError (parse/unsupported syntax)",
       1
     ],
     [
-      "Unhandled: Not callable: {:__proto__ {}} (kont=5 frames)\\",
-      1
-    ],
-    [
-      "Unhandled: js-transpile-binop: unsupported op: >>>\\",
+      "Unhandled: Not callable: {:__proto__ {:valueOf <lambda()> :propertyIsEn",
       1
     ]
   ],
   "pinned_commit": "d5e73fc8d2c663554fb72e2380a8c2bc1a318a33",
-  "elapsed_seconds": 288.0,
+  "elapsed_seconds": 277.0,
   "workers": 1
 }

lib/js/test262-scoreboard.md

@@ -1,39 +1,38 @@
 # test262 scoreboard
 
 Pinned commit: `d5e73fc8d2c663554fb72e2380a8c2bc1a318a33`
-Wall time: 288.0s
+Wall time: 277.0s
 
-**Total:** 115/300 runnable passed (38.3%). Raw: pass=115 fail=174 skip=1597 timeout=11 total=1897.
+**Total:** 147/300 runnable passed (49.0%). Raw: pass=147 fail=141 skip=1597 timeout=12 total=1897.
 
 ## Top failure modes
 
-- **128x** Test262Error (assertion failed)
-- **37x** TypeError: not a function
-- **11x** Timeout
+- **95x** Test262Error (assertion failed)
+- **38x** TypeError: not a function
+- **12x** Timeout
 - **2x** ReferenceError (undefined symbol)
+- **2x** Unhandled: Not callable: {:__proto__ {:toLowerCase <lambda(&rest, args)
 - **2x** Unhandled: Not callable: \\\
-- **2x** Unhandled: Not callable: {:__proto__ {}} (kont=6 frames)\
 - **1x** SyntaxError (parse/unsupported syntax)
-- **1x** Unhandled: Not callable: {:__proto__ {}} (kont=5 frames)\
-- **1x** Unhandled: js-transpile-binop: unsupported op: >>>\
+- **1x** Unhandled: Not callable: {:__proto__ {:valueOf <lambda()> :propertyIsEn
 
 ## Categories (worst pass-rate first, min 10 runnable)
 
 | Category | Pass | Fail | Skip | Timeout | Total | Pass % |
 |---|---:|---:|---:|---:|---:|---:|
-| built-ins/String | 31 | 63 | 1123 | 6 | 1223 | 31.0% |
+| built-ins/String | 33 | 60 | 1123 | 7 | 1223 | 33.0% |
 | built-ins/Math | 40 | 59 | 227 | 1 | 327 | 40.0% |
-| built-ins/Number | 44 | 52 | 240 | 4 | 340 | 44.0% |
+| built-ins/Number | 74 | 22 | 240 | 4 | 340 | 74.0% |
 
 ## Per-category top failures (min 10 runnable, worst first)
 
-### built-ins/String  (31/100 — 31.0%)
+### built-ins/String  (33/100 — 33.0%)
 
-- **53x** Test262Error (assertion failed)
-- **6x** Timeout
+- **50x** Test262Error (assertion failed)
+- **7x** Timeout
 - **2x** ReferenceError (undefined symbol)
+- **2x** Unhandled: Not callable: {:__proto__ {:toLowerCase <lambda(&rest, args)
 - **2x** Unhandled: Not callable: \\\
-- **2x** Unhandled: Not callable: {:__proto__ {}} (kont=6 frames)\
 
 ### built-ins/Math  (40/100 — 40.0%)
 
@@ -41,7 +40,7 @@ Wall time: 288.0s
 - **23x** Test262Error (assertion failed)
 - **1x** Timeout
 
-### built-ins/Number  (44/100 — 44.0%)
+### built-ins/Number  (74/100 — 74.0%)
 
-- **52x** Test262Error (assertion failed)
+- **22x** Test262Error (assertion failed)
 - **4x** Timeout