1 files changed, 34 insertions, 0 deletions
diff --git a/internal/behavior/store.go b/internal/behavior/store.go
index 4051836..f2e9350 100644
--- a/internal/behavior/store.go
+++ b/internal/behavior/store.go
@@ -12,12 +12,32 @@ import (
 	"gopkg.in/yaml.v3"
 )
 
+// excludedContentPath reports whether path lies under a directory or file
+// whose name starts with "_", relative to root. That is the project's
+// convention for work-in-progress content that must not be loaded, validated,
+// indexed, or published while a builder is still authoring it.
+func excludedContentPath(root, path string) bool {
+	rel, err := filepath.Rel(root, path)
+	if err != nil {
+		return false
+	}
+	for _, part := range strings.Split(rel, string(os.PathSeparator)) {
+		if strings.HasPrefix(part, "_") {
+			return true
+		}
+	}
+	return false
+}
+
 func BuildPathIndex(dir string) map[string]string {
 	index := make(map[string]string)
 	filepath.WalkDir(dir, func(path string, d os.DirEntry, err error) error {
 		if err != nil || d.IsDir() || !strings.HasSuffix(d.Name(), ".yaml") {
 			return nil
 		}
+		if excludedContentPath(dir, path) {
+			return nil
+		}
 		id := strings.TrimSuffix(d.Name(), ".yaml")
 		index[id] = path
 		return nil
@@ -31,6 +51,9 @@ func BuildRoomIndex(dir string) map[int]string {
 		if err != nil || d.IsDir() || !strings.HasSuffix(d.Name(), ".yaml") {
 			return nil
 		}
+		if excludedContentPath(dir, path) {
+			return nil
+		}
 		id := strings.TrimSuffix(d.Name(), ".yaml")
 		n, convErr := strconv.Atoi(id)
 		if convErr != nil {
@@ -39,6 +62,11 @@ func BuildRoomIndex(dir string) map[int]string {
 			// skip it here and let validation flag it.
 			return nil
 		}
+		// Room IDs are positive; every other code path treats <= 0 as "no
+		// room". A 0.yaml/-1.yaml must not become a real room.
+		if n <= 0 {
+			return nil
+		}
 		index[n] = path
 		return nil
 	})
@@ -59,6 +87,9 @@ func WalkYAMLDir(dir string, fn func(path, id string, data []byte) error) error
 		if d.IsDir() || !strings.HasSuffix(d.Name(), ".yaml") {
 			return nil
 		}
+		if excludedContentPath(dir, path) {
+			return nil
+		}
 		data, readErr := os.ReadFile(path)
 		if readErr != nil {
 			if os.IsNotExist(readErr) {
@@ -82,6 +113,9 @@ func CheckDuplicateIDs(dir string) []Duplicate {
 		if err != nil || d.IsDir() || !strings.HasSuffix(d.Name(), ".yaml") {
 			return nil
 		}
+		if excludedContentPath(dir, path) {
+			return nil
+		}
 		id := strings.TrimSuffix(d.Name(), ".yaml")
 		seen[id] = append(seen[id], path)
 		return nil