Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
On 1 February 2008 the oil-revenue Stabilisation Fund (created 2004 under Kudrin, balance ~USD 158bn) was split into a Reserve Fund (short-term fiscal buffer, ceiling 10% of GDP) and a National Wealth Fund (long-term pension and intergenerational investment). Deployed substantially in the 2008-2009 crisis response.
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.