diff --git a/artifacts/api-server/src/app.ts b/artifacts/api-server/src/app.ts
index 992833b..9d88983 100644
--- a/artifacts/api-server/src/app.ts
+++ b/artifacts/api-server/src/app.ts
@@ -1,6 +1,7 @@
 import express, { type Express } from "express";
 import cors from "cors";
 import path from "path";
+import { fileURLToPath } from "url";
 import router from "./routes/index.js";
 import adminRelayPanelRouter from "./routes/admin-relay-panel.js";
 import { responseTimeMiddleware } from "./middlewares/response-time.js";
@@ -58,8 +59,13 @@ app.use(adminRelayPanelRouter);
 
 // ── Tower (Matrix 3D frontend) ───────────────────────────────────────────────
 // Serve the pre-built Three.js world at /tower. WS client auto-connects to
-// /api/ws on the same host. process.cwd() = workspace root at runtime.
-const towerDist = path.resolve(process.cwd(), "the-matrix", "dist");
+// /api/ws on the same host.
+// Use import.meta.url so the path is correct whether the server is started from
+// artifacts/api-server (dev) or the workspace root (production build).
+// From src/ or dist/ (both 3 levels inside workspace), three "../" steps reach
+// the workspace root where the-matrix/ lives.
+const __dirname_app = path.dirname(fileURLToPath(import.meta.url));
+const towerDist = path.resolve(__dirname_app, "../../..", "the-matrix", "dist");
 app.use("/tower", express.static(towerDist));
 app.get("/tower/*splat", (_req, res) => res.sendFile(path.join(towerDist, "index.html")));
 
diff --git a/artifacts/mobile/app/(tabs)/matrix.tsx b/artifacts/mobile/app/(tabs)/matrix.tsx
index 64c0c41..3f11690 100644
--- a/artifacts/mobile/app/(tabs)/matrix.tsx
+++ b/artifacts/mobile/app/(tabs)/matrix.tsx
@@ -17,10 +17,10 @@ const C = Colors.dark;
 
 function getMatrixUrl(): string {
   const domain = process.env.EXPO_PUBLIC_DOMAIN ?? "";
-  if (!domain) return "http://localhost:8080/";
+  if (!domain) return "http://localhost:8080/tower";
   const stripped = domain.replace(/^https?:\/\//, "").replace(/\/$/, "");
   const proto = stripped.startsWith("localhost") ? "http" : "https";
-  return `${proto}://${stripped}/`;
+  return `${proto}://${stripped}/tower`;
 }
 
 export default function MatrixScreen() {
diff --git a/attached_assets/IMG_6360_1773967437854.jpeg b/attached_assets/IMG_6360_1773967437854.jpeg
new file mode 100644
index 0000000..eaf6200
Binary files /dev/null and b/attached_assets/IMG_6360_1773967437854.jpeg differ