✨ feat(photos): add Photos app with mana-media EXIF integration

- Add Photos NestJS backend (port 3019) with albums, favorites, tags
- Add Photos SvelteKit web app (port 5189) with gallery, upload, filters
- Extend mana-media with EXIF extraction service using exifr
- Add cross-app photo listing endpoint to mana-media
- Add photo stats endpoint to mana-media
- Add photos to setup-databases.sh

Backend features:
- Albums CRUD with cover image and items management
- Favorites toggle with status check
- Tags CRUD with photo-tag associations
- Photo proxy to mana-media with local data enrichment

Web features:
- Photo grid with infinite scroll
- Photo detail modal with EXIF display
- Album grid and detail views
- Upload dropzone with progress tracking
- Filter bar (app, date range, location, sort)
- i18n support (de/en)
- Svelte 5 runes mode

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/photos/packages/shared/package.json

@@ -0,0 +1,17 @@
+{
+	"name": "@photos/shared",
+	"version": "1.0.0",
+	"private": true,
+	"main": "./src/index.ts",
+	"types": "./src/index.ts",
+	"exports": {
+		".": "./src/index.ts",
+		"./types": "./src/types/index.ts"
+	},
+	"scripts": {
+		"type-check": "tsc --noEmit"
+	},
+	"devDependencies": {
+		"typescript": "^5.9.3"
+	}
+}