test: define schema contract for topic fact graph

src/types/domain.ts

@@ -0,0 +1,37 @@
+export type TopicCategory = 'entity' | 'concept' | 'temporal' | 'custom';
+
+export type TopicGranularity = 'abstract' | 'concrete' | 'mixed';
+
+export type JsonPrimitive = string | number | boolean | null;
+export type JsonValue = JsonPrimitive | JsonValue[] | { [key: string]: JsonValue };
+
+export interface TopicRecord {
+  id: string;
+  name: string;
+  normalized_name: string;
+  category: TopicCategory;
+  granularity: TopicGranularity;
+  description: string | null;
+  metadata: string | null;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface FactRecord {
+  id: string;
+  statement: string;
+  summary: string | null;
+  source: string | null;
+  confidence: number | null;
+  metadata: string | null;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface FactTopicRecord {
+  fact_id: string;
+  topic_id: string;
+  role: string | null;
+  position: number;
+  created_at: string;
+}