Linja: Silkroad Runners Rules engine adapted from Onlinja by Domas Lescinskas. https://github.com/domasles/onlinja Commit 4f9a72d78467f77c50411146ace650aaf3a32cd8, 2026-10-22. Apache-2.0; complete license included. Modified engine.js ports getValidTargets, calculateScores and turn transitions from frontend/src/domain/rules.ts and mutations.ts to standalone JavaScript. Original interface and local tactical evaluator. Default six-runner and crossing arrangements are added variants. Standard12-runner mode preserves the original setup; strategic and aggressive second-runner rules available. No networking required. Original GPT wooden traveler image atlas integrated into actual runners. All delivered JavaScript is readable editable source; no build step.