chore: état initial avant refonte (atlas SvelteKit v4.0.0)

Snapshot de l'existant avant application du playbook OKI :
background shader Three.js, carte graphe 3D, timeline statique.

atlas-fediverse/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "atlas-fediverse",
+  "version": "4.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "vitest run",
+    "dev": "vite dev",
+    "build": "vite build && node scripts/postbuild-csp.mjs",
+    "preview": "vite preview",
+    "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "type": "module",
+  "private": "true",
+  "dependencies": {
+    "d3-force": "^3.0.0",
+    "three": "^0.185.1"
+  },
+  "devDependencies": {
+    "@sveltejs/adapter-static": "^3.0.10",
+    "@sveltejs/kit": "^2.70.1",
+    "@sveltejs/vite-plugin-svelte": "^7.2.0",
+    "@types/d3-force": "^3.0.10",
+    "@types/three": "^0.185.1",
+    "svelte": "^5.56.6",
+    "svelte-check": "^4.7.3",
+    "typescript": "^6.0.3",
+    "vite": "^8.1.5",
+    "vitest": "^4.1.10"
+  }
+}