{"changed":true,"observed_change":true,"status":"changed","change_type":"pricing","severity":"medium","summary":"Detected pricing changes in the watched static text.","change_ratio":0.5,"change_ratio_method":"token_multiset_distance","min_change_ratio":0,"structured_changes":[{"type":"pricing","kind":"monetary_amount_changed","before":{"amount":"49","currency":"unspecified_dollar","symbol":"$","raw":"$49","period":"month","context":"Pro | $49/month","kind":"monetary_mention"},"after":{"amount":"79","currency":"unspecified_dollar","symbol":"$","raw":"$79","period":"month","context":"Pro | $79/month","kind":"monetary_mention"},"association":"Unique matching non-price text context, currency and period; no plan identity is inferred.","severity":"medium","confidence":{"value":0.9,"calibrated":false,"basis":"deterministic text-context match"}},{"type":"pricing","kind":"text_replaced","severity":"medium","confidence":{"value":0.6,"calibrated":false,"basis":"configured category"},"evidence":{"operation":"replace","before":"$49/month","after":"$79/month","before_line_start":2,"after_line_start":2,"before_truncated":false,"after_truncated":false}}],"evidence":[{"operation":"replace","before":"$49/month","after":"$79/month","before_line_start":2,"after_line_start":2,"before_truncated":false,"after_truncated":false}],"before_checksum":"92fba2839f1995515aebbf069169001b3860b3378af43d2f60c6d0e507752109","after_checksum":"0ae18fc6ac963a2940b8b4068f6ac3c277e614e71543d362918df1d938b6f062","coverage":{"mode":"static_html","javascript_rendered":false,"confidence_calibrated":false,"changes_truncated":false,"evidence_truncated":false,"price_comparison_skipped":false,"limitations":["Static HTML text only; JavaScript-rendered, visual and non-text changes are not measured.","Categories, severity and confidence are heuristics; confidence is uncalibrated.","Price pairing requires unique unchanged non-price context; monetary mentions are not verified offers.","Token-multiset distance measures token additions/removals; reordering alone has distance zero."]}}