Type Alias: GraphProblemCode

GraphProblemCode = "unknown-skill" | "no-entry" | "unreachable-skill" | "ambiguous-routes" | "self-loop" | "body-foreign-tool" | "body-unknown-tool"

Defined in: src/lib/injection-engine/skillGraphCheckup.ts:17

skillGraph check-up — build-time validation of a declared graph.

Pure + side-effect-free. Catches wiring mistakes at authoring time instead of mid-run: a skill nobody can reach, an edge to a skill that isn't in the graph, two un-prioritized edges leaving one skill, a graph with no start, a self-loop.

Surfaced two ways: • graph.checkup() → { ok, problems } — always available, call it whenever. • .build({ check: 'throw' | 'warn' | 'off' }) — run it at build time.

unreachable-skill is a WARNING, not an error: a skill with no incoming edge is still legitimately reachable by the model via read_skill. Only unknown-skill and no-entry are true errors.