capture_process_scenario declares normalization patterns as literal text, but\nreplaceAll expands \$&\, \$\`, and \$1\ in the replacement as a replacement\npattern. A caller normalizing text that contains a dollar sign silently gets\nduplicated, spliced, or dropped content in the recorded Evidence instead of\nthe requested literal replacement.\n\nUse split/join, which is literal on both sides and is already the idiom used\nfor exact-literal scenario rules in browserScenarioNormalization.ts.