Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Three inter-Korean summits in 2018 (Panmunjom, Panmunjom again, Pyongyang) producing the 27 April 2018 Panmunjom Declaration and the 19 September 2018 Pyongyang Joint Declaration. Military- tension-reduction agreements (buffer zones in DMZ, guard-post withdrawals), reopened liaison office in Kaesong, restart of family-reunion meetings. Track derailed after the February 2019 Hanoi Trump-Kim summit failure; Pyongyang demolished the Kaesong liaison office in June 2020.
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.