feat(database): add TypeScript interfaces for database models and API responses

src/types/database.ts

@@ -0,0 +1,84 @@
+// Core Item type matching our Rust Item struct
+export interface Item {
+  id: string;
+  name: string;
+  description: string;
+  wikidataId?: string;
+  customProperties: Record<string, string>;
+}
+
+// Database models (matching Prisma schema)
+export interface DbUrl {
+  id: number;
+  url: string;
+  createdAt: Date;
+}
+
+export interface DbProperty {
+  id: number;
+  name: string;
+  globalUsageCount: number;
+}
+
+export interface DbItem {
+  id: string;
+  urlId: number;
+  wikidataId?: string;
+  itemOrder: number;
+  globalItemId: string;
+}
+
+export interface DbItemProperty {
+  globalItemId: string;
+  propertyId: number;
+  value: string;
+}
+
+export interface DbSelectedProperty {
+  urlId: number;
+  propertyId: number;
+}
+
+export interface DbDeletedProperty {
+  urlId: number;
+  globalItemId: string;
+  propertyId: number;
+}
+
+// API Response types
+export interface ItemsResponse {
+  items: Item[];
+  selectedProperties: string[];
+}
+
+export interface PropertyResponse {
+  id: number;
+  name: string;
+  globalUsageCount: number;
+}
+
+// Wikidata types (for future integration)
+export interface WikidataSuggestion {
+  id: string;
+  label: string;
+  description?: string;
+}
+
+export interface WikidataProperty {
+  id: string;
+  label: string;
+  value: string;
+}
+
+// Core properties that are always present
+export const CORE_PROPERTIES = ['name', 'description'] as const;
+export type CoreProperty = typeof CORE_PROPERTIES[number];
+
+// Database operation results
+export type DatabaseResult<T> = {
+  success: true;
+  data: T;
+} | {
+  success: false;
+  error: string;
+};