diff --git a/package.json b/package.json
index 7e1673504..12f8ba922 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "type": "module",
   "scripts": {
     "test": "hardhat test",
-    "build": "cd frontend && npm run build",
+    "build": "echo 'No build step required'",
     "worker:dev": "wrangler dev",
     "worker:deploy": "wrangler deploy --env production",
     "worker:deploy:staging": "wrangler deploy --env staging"
diff --git a/workers/index.js b/workers/index.mjs
similarity index 100%
rename from workers/index.js
rename to workers/index.mjs
diff --git a/wrangler.toml b/wrangler.toml
index cd821b031..62e440d07 100644
--- a/wrangler.toml
+++ b/wrangler.toml
@@ -1,6 +1,6 @@
 name            = "yennefer"
-main            = "workers/index.js"
-compatibility_date  = "2024-09-23"
+main            = "workers/index.mjs"
+compatibility_date  = "2024-04-01"
 compatibility_flags = ["nodejs_compat"]
 
 # ─── Build step ──────────────────────────────────────────────────────────────
@@ -9,7 +9,7 @@ compatibility_flags = ["nodejs_compat"]
 # Installs frontend deps and builds the SPA so frontend/build exists before
 # `wrangler deploy` uploads assets.  NODE_OPTIONS is required for
 # react-scripts 5.x + Node 18+ (webpack 4 OpenSSL 3.0 compatibility).
-command = "cd frontend && npm install --include=dev && GENERATE_SOURCEMAP=false CI=false NODE_OPTIONS=--openssl-legacy-provider npm run build"
+command = "cd yennefer-observatory && npm install --legacy-peer-deps && npm run build"
 
 # ─── Static Assets (React SPA build output) ──────────────────────────────────
 # Built by `npm run build` (root package.json) before every `wrangler deploy`.
@@ -17,13 +17,9 @@ command = "cd frontend && npm install --include=dev && GENERATE_SOURCEMAP=false
 # The ASSETS binding serves the React bundle with proper cache headers and
 # falls back to index.html for client-side routing.
 [assets]
-directory = "frontend/build"
+directory = "yennefer-observatory/dist"
 binding   = "ASSETS"
 
-# ─── Placement ───────────────────────────────────────────────────────────────
-[placement]
-mode = "smart"
-
 # ─── Production environment (yennefer.quest) ─────────────────────────────────
 # BACKEND_URL is set as a Cloudflare Worker secret (not a plain var) so it
 # stays encrypted and is never committed to source: