feat(M3): Shared-source generator for agent variants

scripts/lib/run-link-check.mjs

@@ -47,13 +47,20 @@ const SKIP_PATHS = new Set([
   "pi-package",
 ]);
 
+// Also skip any _source/ subdirectory within skills — canonical source files
+// use relative paths calibrated to the generated location (one level shallower).
+const SKIP_SEGMENT = "_source";
+
 function shouldSkip(absPath) {
   const rel = path.relative(REPO_ROOT, absPath);
   for (const skip of SKIP_PATHS) {
     if (rel === skip || rel.startsWith(skip + path.sep)) return true;
   }
   const parts = rel.split(path.sep);
-  return parts.includes("node_modules");
+  if (parts.includes("node_modules")) return true;
+  // Skip canonical _source/ directories (links calibrated to generated location)
+  if (parts.includes(SKIP_SEGMENT)) return true;
+  return false;
 }
 
 function collectMarkdownFiles(dir) {