refactor: unify tags and edges into single rels table

models/node.go

@@ -5,8 +5,6 @@ import (
 	"strings"
 )
 
-var PropertyPrefixes = []string{"_type::", "_status::", "_prio::"}
-
 type Node struct {
 	ID        string              `json:"id"`
 	Title     string              `json:"title"`
@@ -28,17 +26,16 @@ func (n *Node) AddTag(tag string) {
 	if tag == "" {
 		return
 	}
-	for _, prefix := range PropertyPrefixes {
-		if strings.HasPrefix(tag, prefix) {
-			var newTags []string
-			for _, t := range n.Tags {
-				if !strings.HasPrefix(t, prefix) {
-					newTags = append(newTags, t)
-				}
+	// If it's a property (name::value format), replace any existing tag with the same prefix.
+	if idx := strings.Index(tag, "::"); idx >= 0 {
+		prefix := tag[:idx+2]
+		var newTags []string
+		for _, t := range n.Tags {
+			if !strings.HasPrefix(t, prefix) {
+				newTags = append(newTags, t)
 			}
-			n.Tags = newTags
-			break
 		}
+		n.Tags = newTags
 	}
 	if !slices.Contains(n.Tags, tag) {
 		n.Tags = append(n.Tags, tag)
@@ -86,11 +83,10 @@ func (n *Node) RemoveRelation(relType RelType, target string) {
 }
 
 func (n *Node) GetProperty(k string) string {
+	prefix := "_" + k + "::"
 	for _, t := range n.Tags {
-		if strings.HasPrefix(t, "_") {
-			if p := strings.SplitN(t[1:], "::", 2); len(p) == 2 && p[0] == k {
-				return p[1]
-			}
+		if strings.HasPrefix(t, prefix) {
+			return strings.TrimPrefix(t, prefix)
 		}
 	}
 	return ""