Cardano Updates

High level summary of mempool and constraint findings

Adversarial mempool simulations w/ Leios

Signed-off-by: Chris Gianelloni <[email protected]>

ci(antithesis): avoid secrets check in global if when undefined

Signed-off-by: Chris Gianelloni <[email protected]>

Co-Authored-By: Claude Opus 4.6 <[email protected]>

This is no joke.

Nodes were using raw longitude for x-position while the map background
used the xOffset + lon * xScale transform, causing misalignment. Now
both use the same coordinate space. Also adds Mini Mainnet (750 nodes)
and Pseudo Mainnet (10k nodes) scenarios.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Signed-off-by: Chris Gianelloni <[email protected]>

Draw Natural Earth 110m country boundaries behind the graph when
Mercator layout is active. Shared projection maps real-world lat/lon
to the same coordinate space as the topology nodes.

Also fix canvas recentering to use updated positions after layout
switch rather than stale pre-switch positions.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Projects node coordinates using Web Mercator formula with y-axis
normalized to match x-axis span for reasonable aspect ratio.
Useful for topologies with real geographic coordinates.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Add a Layout selector (Original/Auto) that applies d3-force simulation
to compute node positions when "Auto" is selected, giving a cleaner
graph layout for topologies with random or poorly distributed coordinates.

Co-Authored-By: Claude Opus 4.6 <[email protected]>