Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Ease of hiring/firing, collective-bargaining scope, minimum wage rigidity, temporary/permanent contract regulation.
Agreement between PZPR/government (Kiszczak) and Solidarność (Wałęsa et al.) signed 5 April 1989 after two months of Round Table negotiations. Re-legalised Solidarność, created partially free parliamentary elections (100% of new Senate contested; 35% of Sejm contested, 65% reserved for PZPR+allies), established presidency (reserved implicitly for Jaruzelski). 4 June 1989 elections delivered landslide Solidarność victory and collapsed the regime within months.
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.