refactor: simplify service interface to use tags/rels for all node properties

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cmd/list.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"axolotl/models"
 	"axolotl/output"
 	"axolotl/service"
 	"fmt"
@@ -22,13 +23,27 @@ var listCmd = &cobra.Command{
 		}
 
 		filter := service.ListFilter{
-			Tags:      lTags,
-			Status:    lStatus,
-			Priority:  lPrio,
-			Type:      lType,
-			Namespace: lNamespace,
-			Assignee:  lAssignee,
-			Mention:   lMention,
+			Tags: append([]string{}, lTags...),
+		}
+
+		// Shorthand flags expand to tag prefixes or rel filters.
+		if lStatus != "" {
+			filter.Tags = append(filter.Tags, "_status::"+lStatus)
+		}
+		if lPrio != "" {
+			filter.Tags = append(filter.Tags, "_prio::"+lPrio)
+		}
+		if lType != "" {
+			filter.Tags = append(filter.Tags, "_type::"+lType)
+		}
+		if lNamespace != "" {
+			filter.Rels = append(filter.Rels, service.RelInput{Type: models.RelInNamespace, Target: lNamespace})
+		}
+		if lAssignee != "" {
+			filter.Rels = append(filter.Rels, service.RelInput{Type: models.RelAssignee, Target: lAssignee})
+		}
+		if lMention != "" {
+			filter.Rels = append(filter.Rels, service.RelInput{Type: models.RelMentions, Target: lMention})
 		}
 
 		for _, r := range lRels {