test: make T0 harness results complete

lib/regex/regex_whitebox.ww

@@ -10,14 +10,12 @@
 // the non-T @test drop, #6). Load-bearing ww-compiler coverage (drove
 // #34/#38/#44/#45/#48), not black-box-reachable.
 //
-// `_whitebox.ww` (NOT *_test.ww) is the ww convention for an in-package
-// white-box test file: the enumerator skips *test.ww, so the non-suffixed
-// name is what keeps this a bundled regex module source. It is exercised
-// by the sibling external driver lib/regex/wb/regex_test.ww, whose
-// different-dir `import regex` dir-resolves and bundles this file (a
-// same-dir import file-resolves regex.ww only — probe E; task #33 would
-// delete the driver). The public-API @tests stay black-box in
-// lib/regex/regex_test.ww (Go's foo / foo_test split; CLAUDE.md rule-9).
+// `_whitebox.ww` (NOT *_test.ww) keeps this file in the production
+// enumerator's root-package assembly until package-aware testing can classify
+// same-package `*_test.ww` files (T1). The T0 gate resolves `regex` as the root
+// directory so -T sees these tests directly; importing regex as a dependency
+// would strip them. Public-API tests remain a separate `package regex_test`
+// binary in lib/regex/regex_test.ww (CLAUDE.md rule 9).
 package regex;
 
 import io;