Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Investigative journalist Jan Kuciak (Aktuality.sk) and fiancee Martina Kusnirova assassinated 21 Feb 2018. Kuciak had been investigating Italian 'Ndrangheta settlement in eastern Slovakia, VAT-fraud networks, and links to Smer officials. Businessman Marian Kocner identified as ordering murder; later convicted (Kuciak case upheld 2023). Triggered 'For a Decent Slovakia' mass protests forcing Fico to resign 15 Mar 2018 and Interior Minister Kalinak earlier.
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.