feat: publish Regex Tools 0.1.0

tests/fixtures/README.md

@@ -0,0 +1,13 @@
+# Test fixture provenance
+
+The 0.1.0 test suite uses only small, project-authored patterns and subjects.
+They exercise public ECMAScript semantics without copying a third-party corpus.
+
+- RegexLib was not copied because its pages do not present a clear
+  redistribution licence.
+- RGXP.RU was not copied because a suitable fixture redistribution licence was
+  not established.
+- RegexHub was inspected as a possible future MIT-licensed adversarial-pattern
+  source, but no RegexHub source or fixture is distributed in this release.
+- Test262 and runtime conformance sets are future work and require a pinned
+  adapter plus per-file provenance before any material is included.