SOTA Engineering Skills — Master Router

A library of 41 domain skills, each with a SKILL.md entry point and a rules/ folder of focused rule files (each under 500 lines). Each skill works in two modes:

• BUILD — apply the rules while designing or writing code.
• AUDIT — review existing code against the rules and emit findings in the canonical format below (it supersedes any per-skill variant): file:line | rule violated | severity (Critical/High/Medium/Low/Info) | effort (trivial/small/medium/large) | fix. Severity resolves the same way: rules/03 §1 is the floor. A skill's own Critical/High/Medium/Low table may refine it within that skill's domain and must say that it is doing so; an unscoped per-skill table does not outrank the model, and a cross-domain roll-up is always rated on it.

Read only what the task needs: first the relevant skill's SKILL.md (it has its own index of rules/ files with "read this when..." guidance), then only the rules files that match the code in front of you. Never load all skills at once.