feat(service-integrations): phases 9-10 — media integrations + Planka

- Emby: now playing, library stats, recently added, active streams
- Immich: library stats, recent uploads with formatted storage
- Deluge: active torrents with progress, transfer speed, disk space gauge
- MeTube: download queue progress (no auth required)
- Planka: my cards, overdue cards with red badges, board summary
- All 11 integrations registered in registry

src/lib/server/integrations/immich/schema.ts

@@ -0,0 +1,7 @@
+import { z } from 'zod';
+
+export const immichAuthConfigSchema = z.object({
+	apiKey: z.string().min(1, 'API key is required')
+});
+
+export type ImmichAuthConfig = z.infer<typeof immichAuthConfigSchema>;