feat(graph-rag): UI fuer Wissens-Graph mit BFS-Traversierung — Modul 11/16 des UI-Backlogs

frontend/src/api/knowledge.ts

@@ -104,6 +104,45 @@ export interface GraphRelationshipsResult {
   total: number;
 }
 
+export interface GraphRelationshipCreate {
+  source_type: string;
+  source_id: string;
+  target_type: string;
+  target_id: string;
+  relationship_type: string;
+  metadata?: Record<string, unknown> | null;
+}
+
+export interface GraphNode {
+  entity_type: string;
+  entity_id: string;
+  depth: number;
+  path: string[];
+}
+
+export interface GraphEdge {
+  source_type: string;
+  source_id: string;
+  target_type: string;
+  target_id: string;
+  relationship_type: string;
+  metadata: Record<string, unknown> | null;
+}
+
+export interface GraphTraverseRequest {
+  source_type: string;
+  source_id: string;
+  max_hops?: number;
+  relationship_types?: string[] | null;
+}
+
+export interface GraphTraverseResult {
+  nodes: GraphNode[];
+  edges: GraphEdge[];
+  total_nodes: number;
+  total_edges: number;
+}
+
 // ─── Ask Knowledge types ───────────────────────────────────────────────────
 
 export interface KnowledgeAskRequest {
@@ -203,6 +242,22 @@ export async function fetchGraphRelationships(params?: {
   return apiGet<GraphRelationshipsResult>(`/graph/relationships${qs ? `?${qs}` : ''}`);
 }
 
+export async function createGraphRelationship(
+  data: GraphRelationshipCreate,
+): Promise<GraphRelationship> {
+  return apiPost<GraphRelationship>('/graph/relationships', data);
+}
+
+export async function deleteGraphRelationship(relationshipId: string): Promise<void> {
+  await apiDelete<void>(`/graph/relationships/${relationshipId}`);
+}
+
+export async function traverseGraph(
+  body: GraphTraverseRequest,
+): Promise<GraphTraverseResult> {
+  return apiPost<GraphTraverseResult>('/graph/traverse', body);
+}
+
 // ─── Ask Knowledge API ─────────────────────────────────────────────────────
 
 export async function askKnowledge(body: KnowledgeAskRequest): Promise<KnowledgeAskResponse> {