GUEST: step 0 — baseline snapshot

Created lib/guest/baseline/ with normalised scoreboards for all 11 guests:
lua 185/185, forth 64/64, ruby 76/76, apl 73/73, prolog 590/590,
common-lisp 309/309, smalltalk 625/629, tcl 3/4, haskell 0/18 programs,
js 94/148 (test262-slice), erlang 0/0 (suite all-zero).

Re-ran every conformance.sh and test.sh; refreshed each guest's own
scoreboard.{json,md} so per-guest scoreboard matches lib/guest/baseline/<lang>.json.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

lib/guest/baseline/js.json

@@ -0,0 +1,75 @@
+{
+  "lang": "js",
+  "captured": "2026-05-06T22:01:00Z",
+  "suite_command": "bash lib/js/conformance.sh",
+  "totals": {
+    "pass": 94,
+    "fail": 54,
+    "total": 148
+  },
+  "suites": [
+    {
+      "name": "test262-slice",
+      "pass": 94,
+      "fail": 54,
+      "total": 148,
+      "failing_tests": [
+        "arithmetic/bitnot",
+        "arithmetic/mixed_concat",
+        "async/await_promise_all",
+        "closures/sum_sq",
+        "coercion/implicit_str_add",
+        "collections/array_index",
+        "collections/array_nested",
+        "collections/string_index",
+        "functions/rest_param",
+        "loops/for_break",
+        "loops/for_continue",
+        "loops/nested_for",
+        "loops/while_basic",
+        "loops/while_break_infinite",
+        "objects/array_filter_reduce",
+        "objects/array_map",
+        "objects/array_method_chain",
+        "objects/array_mutate",
+        "objects/array_push_length",
+        "objects/arrow_lexical_this",
+        "objects/class_basic",
+        "objects/class_extend_chain",
+        "objects/class_inherit",
+        "objects/counter_closure",
+        "objects/in_operator",
+        "objects/instanceof",
+        "objects/method_this",
+        "objects/new_constructor",
+        "objects/object_mutate",
+        "objects/prototype_chain",
+        "objects/string_method",
+        "objects/string_slice",
+        "promises/executor_throws",
+        "promises/finally_passthrough",
+        "promises/microtask_ordering",
+        "promises/new_promise_reject",
+        "promises/new_promise_resolve",
+        "promises/promise_all",
+        "promises/promise_all_empty",
+        "promises/promise_all_nonpromise",
+        "promises/promise_all_reject",
+        "promises/promise_race",
+        "promises/promise_resolve_already_promise",
+        "promises/reject_catch",
+        "promises/resolve_adopts",
+        "promises/resolve_then",
+        "promises/then_chain",
+        "promises/then_throw_catch",
+        "statements/block_scope",
+        "statements/const_multi",
+        "statements/if_else_false",
+        "statements/if_else_true",
+        "statements/let_init",
+        "statements/var_decl"
+      ]
+    }
+  ],
+  "source_scoreboard": "lib/js/conformance.sh-output"
+}