Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Joint declaration 15 December 1993 by Taoiseach Albert Reynolds and UK PM John Major establishing consent principle for Northern Ireland constitutional change and committing both governments to an inclusive peace process. Foundational document for IRA ceasefire 31 August 1994 and subsequent Good Friday Agreement 1998.
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.