feat: PhotoPrism M0 bring-up — compose stack, web client, sidecar, migrate

Replace the legacy mule-image backend with PhotoPrism plus a thin
SvelteKit client and a Node sidecar for endpoints PhotoPrism doesn't
expose (file rename), and add a two-phase migrator (metadata via PUT,
heaps → albums) for the existing Postgres library.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

web/package.json

@@ -0,0 +1,39 @@
+{
+	"name": "web",
+	"private": true,
+	"version": "0.0.1",
+	"type": "module",
+	"scripts": {
+		"dev": "vite dev",
+		"build": "vite build",
+		"preview": "vite preview",
+		"prepare": "svelte-kit sync || echo ''",
+		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch"
+	},
+	"devDependencies": {
+		"@sveltejs/adapter-static": "^3.0.10",
+		"@sveltejs/kit": "^2.57.0",
+		"@sveltejs/vite-plugin-svelte": "^7.0.0",
+		"@tailwindcss/vite": "^4.3.0",
+		"@types/node": "^25.8.0",
+		"svelte": "^5.55.2",
+		"svelte-check": "^4.4.6",
+		"tailwindcss": "^4.3.0",
+		"typescript": "^6.0.2",
+		"vite": "^8.0.7"
+	},
+	"dependencies": {
+		"@tanstack/svelte-query": "^6.1.29",
+		"@tanstack/svelte-virtual": "^3.13.24",
+		"axios": "^1.16.1",
+		"bits-ui": "^2.18.1",
+		"clsx": "^2.1.1",
+		"lucide-svelte": "^1.0.1",
+		"maplibre-gl": "^5.24.0",
+		"mode-watcher": "^1.1.0",
+		"svelte-sonner": "^1.1.1",
+		"tailwind-merge": "^3.6.0",
+		"tailwind-variants": "^3.2.2"
+	}
+}