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

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

service/node_service.go

@@ -24,56 +24,37 @@ type NodeService interface {
 }
 
 // AddInput describes a new node to create.
+// Tags may include special property tags (_type::, _status::, _prio::); the
+// service applies defaults (type=issue, status=open for issues) and validates.
+// Rels may include assignee, in_namespace, blocks, subtask, related, etc.;
+// user and namespace targets are auto-created as needed.
 type AddInput struct {
-	Title    string
-	Content  string
-	DueDate  string
-	Type     string // default: "issue"
-	Status   string // default: "open" when Type is "issue"
-	Priority string
-	// Namespace is a namespace name or node ID. Defaults to the current user.
-	Namespace string
-	// Assignee is a username or node ID.
-	Assignee string
-	// Tags are arbitrary user-defined labels (not system properties).
-	Tags []string
-	// Rels are additional typed edges (e.g. blocks, subtask, related).
-	Rels []RelInput
+	Title   string
+	Content string
+	DueDate string
+	Tags    []string
+	Rels    []RelInput
 }
 
 // UpdateInput describes changes to apply to an existing node.
 // Nil pointer fields mean "no change".
+// Setting _status::done in AddTags is rejected when the node has open blockers.
+// Adding assignee or in_namespace rels replaces the previous single target.
 type UpdateInput struct {
-	Title   *string
-	Content *string
-	DueDate *string // nil = no change; pointer to "" = clear due date
-	// Status "done" is rejected when the node has open blockers.
-	Status   *string
-	Priority *string
-	Type     *string
-	// Namespace replaces the current namespace.
-	Namespace *string
-	// Assignee replaces the current assignee.
-	Assignee   *string
+	Title      *string
+	Content    *string
+	DueDate    *string // nil = no change; pointer to "" = clear due date
 	AddTags    []string
 	RemoveTags []string
 	AddRels    []RelInput
 	RemoveRels []RelInput
 }
 
-// ListFilter specifies which nodes to return. Empty fields are ignored.
+// ListFilter specifies which nodes to return. Empty slices are ignored.
+// Tags are matched as exact tag values or prefixes (e.g. "_status::open").
+// Rels are resolved to node IDs; a missing target returns no results.
 type ListFilter struct {
-	Tags     []string
-	Status   string
-	Priority string
-	Type     string
-	// Namespace filters by namespace name or node ID.
-	Namespace string
-	// Assignee filters by username or node ID.
-	Assignee string
-	// Mention filters to nodes that mention the given username or node ID.
-	Mention string
-	// Rels are additional relation filters (e.g. blocks:someID).
+	Tags []string
 	Rels []RelInput
 }