feat: add shared dashboard API contracts

packages/api-contracts/src/media.ts

@@ -0,0 +1,32 @@
+import { z } from 'zod';
+import { RejectedActionResponseSchema, SuccessResponseSchema } from './common.js';
+
+export const MediaItemSchema = z.strictObject({
+  id: z.string(),
+  chatUsername: z.string().nullable(),
+  chatRoomId: z.string().nullable(),
+  sender: z.string(),
+  timestamp: z.number(),
+  originalUrl: z.string(),
+  fileName: z.string(),
+  relativePath: z.string(),
+  createdAt: z.number(),
+  urlPath: z.string(),
+});
+export const MediaResponseSchema = z.array(MediaItemSchema);
+export const MediaSyncStatusSchema = z.strictObject({
+  isSyncing: z.boolean(),
+  lastSyncAt: z.number().nullable(),
+  lastSyncDurationMs: z.number().nullable(),
+  lastSyncChats: z.number().nullable(),
+  lastError: z.string().nullable(),
+  nextSyncAt: z.number().nullable(),
+});
+export const MediaSyncRequestSchema = z.strictObject({ full: z.boolean().optional() });
+export const MediaSyncTriggerResponseSchema = z.union([
+  SuccessResponseSchema,
+  RejectedActionResponseSchema,
+]);
+
+export type MediaItem = z.infer<typeof MediaItemSchema>;
+export type MediaSyncStatus = z.infer<typeof MediaSyncStatusSchema>;