diff --git a/frontend/next.config.ts b/frontend/next.config.ts
index a5c09e5..d7858d3 100644
--- a/frontend/next.config.ts
+++ b/frontend/next.config.ts
@@ -8,6 +8,12 @@ const nextConfig: NextConfig = {
   turbopack: {
     root: path.resolve(__dirname),
   },
+  // @stacks/connect is imported statically (so the wallet path ships in the
+  // initial client bundle and can't lose a lazy chunk across deploys), but
+  // Turbopack's server bundle can't wire its module graph during prerender
+  // ("module factory is not available"). Keep it external on the server —
+  // Node resolves it natively there.
+  serverExternalPackages: ["@stacks/connect"],
 };
 
 export default nextConfig;
diff --git a/frontend/src/app/layout.tsx b/frontend/src/app/layout.tsx
index 9a74d28..8069c0b 100644
--- a/frontend/src/app/layout.tsx
+++ b/frontend/src/app/layout.tsx
@@ -3,6 +3,7 @@ import { GeistSans } from "geist/font/sans";
 import { GeistMono } from "geist/font/mono";
 import { QueryProvider } from "@/providers/query-provider";
 import { StacksProvider } from "@/providers/stacks-provider";
+import { StaleDeployGuard } from "@/components/stale-deploy-guard";
 import { Toaster } from "sonner";
 import "./globals.css";
 
@@ -28,6 +29,7 @@ export default function RootLayout({
         className={`${GeistSans.variable} ${GeistMono.variable} antialiased bg-surface-0 text-zinc-100`}
       >
         <QueryProvider>
+          <StaleDeployGuard />
           <StacksProvider>
             {children}
             <Toaster
diff --git a/frontend/src/components/stale-deploy-guard.tsx b/frontend/src/components/stale-deploy-guard.tsx
new file mode 100644
index 0000000..4679c49
--- /dev/null
+++ b/frontend/src/components/stale-deploy-guard.tsx
@@ -0,0 +1,55 @@
+"use client";
+
+/**
+ * Self-healing for tabs left open across deploys.
+ *
+ * Every deploy replaces the content-hashed chunk files, so a tab still
+ * running the previous build fails as soon as it lazily loads anything
+ * ("module factory is not available", ChunkLoadError, ...). The only correct
+ * recovery is reloading onto the new build — this guard does it once,
+ * automatically, instead of showing users module gibberish.
+ */
+
+import { useEffect } from "react";
+import { isStaleChunk } from "@/lib/wallet-errors";
+
+const RELOADED_AT_KEY = "stale-deploy-reloaded-at";
+const RELOAD_LOOP_WINDOW_MS = 30_000;
+
+function reloadOnceForNewDeploy() {
+  try {
+    const last = Number(sessionStorage.getItem(RELOADED_AT_KEY) ?? 0);
+    // If we already reloaded very recently, don't loop — the failure is
+    // something else (offline, blocked CDN) and reloading won't help.
+    if (Date.now() - last < RELOAD_LOOP_WINDOW_MS) return;
+    sessionStorage.setItem(RELOADED_AT_KEY, String(Date.now()));
+  } catch {
+    /* sessionStorage unavailable — still better to reload than stay broken */
+  }
+  window.location.reload();
+}
+
+export function StaleDeployGuard() {
+  useEffect(() => {
+    const onError = (event: ErrorEvent) => {
+      if (isStaleChunk(event.error ?? event.message)) {
+        event.preventDefault();
+        reloadOnceForNewDeploy();
+      }
+    };
+    const onRejection = (event: PromiseRejectionEvent) => {
+      if (isStaleChunk(event.reason)) {
+        event.preventDefault();
+        reloadOnceForNewDeploy();
+      }
+    };
+    window.addEventListener("error", onError);
+    window.addEventListener("unhandledrejection", onRejection);
+    return () => {
+      window.removeEventListener("error", onError);
+      window.removeEventListener("unhandledrejection", onRejection);
+    };
+  }, []);
+
+  return null;
+}
diff --git a/frontend/src/hooks/use-stacks-tx.ts b/frontend/src/hooks/use-stacks-tx.ts
index c66adc3..142622a 100644
--- a/frontend/src/hooks/use-stacks-tx.ts
+++ b/frontend/src/hooks/use-stacks-tx.ts
@@ -4,8 +4,16 @@ import { useCallback, useState } from "react";
 import { useQueryClient } from "@tanstack/react-query";
 import { toast } from "sonner";
 import { PostConditionMode } from "@stacks/transactions";
+// Static import on purpose: keeps the signing path out of lazy chunks that
+// deploys invalidate under open tabs (see stacks-provider.tsx).
+import { request } from "@stacks/connect";
 import { waitForTxConfirmation, clarityErrorMessage } from "@/lib/stacks";
-import { isUserCancel, isNoResponse, walletErrorDetail } from "@/lib/wallet-errors";
+import {
+  isUserCancel,
+  isNoResponse,
+  isStaleChunk,
+  walletErrorDetail,
+} from "@/lib/wallet-errors";
 
 type TxStatus = "idle" | "pending" | "confirming" | "success" | "error";
 
@@ -49,8 +57,6 @@ export function useStacksTx() {
         // JSON-RPC bridge. The legacy openContractCall/StacksProvider path is
         // deprecated by Leather and silently hangs (no popup, dangling
         // promise) on current wallet versions.
-        const { request } = await import("@stacks/connect");
-
         const callParams = {
           contract:
             `${options.contractAddress}.${options.contractName}` as `${string}.${string}`,
@@ -142,6 +148,13 @@ export function useStacksTx() {
           setStatus("idle");
           return null;
         }
+        if (isStaleChunk(err)) {
+          // A deploy replaced the bundle under this open tab — reload onto
+          // the new build instead of surfacing module internals.
+          toast.info("StackStream was updated — refreshing…");
+          setTimeout(() => window.location.reload(), 800);
+          return null;
+        }
         setError(walletErrorDetail(err));
         setStatus("error");
         return null;
diff --git a/frontend/src/lib/wallet-errors.ts b/frontend/src/lib/wallet-errors.ts
index 4038792..310f030 100644
--- a/frontend/src/lib/wallet-errors.ts
+++ b/frontend/src/lib/wallet-errors.ts
@@ -45,3 +45,14 @@ export function walletErrorDetail(err: unknown): string {
   const msg = e.message?.slice(0, 140) ?? "Unknown error";
   return e.code !== undefined ? `${msg} (code ${e.code})` : msg;
 }
+
+/**
+ * A lazily-loaded chunk vanished because a new deploy replaced the hashed
+ * bundle files while this tab was still running the old build. The only
+ * correct recovery is a one-time page reload onto the new build.
+ */
+export function isStaleChunk(err: unknown): boolean {
+  return /module factory|ChunkLoadError|Loading chunk|Failed to fetch dynamically imported module|Importing a module script failed/i.test(
+    asErrorLike(err).message ?? ""
+  );
+}
diff --git a/frontend/src/providers/stacks-provider.tsx b/frontend/src/providers/stacks-provider.tsx
index 3920bba..c4dc0e4 100644
--- a/frontend/src/providers/stacks-provider.tsx
+++ b/frontend/src/providers/stacks-provider.tsx
@@ -9,6 +9,11 @@
  * `StacksProvider` object, which left the previous `showConnect`/
  * `openContractCall` calls hanging with no popup.
  *
+ * The library is imported STATICALLY on purpose: it ships in the initial
+ * bundle (~10 KB gz), so the wallet path can never lose its lazy chunk when
+ * a deploy replaces the hashed bundle files under an open tab ("module
+ * factory is not available").
+ *
  * Connect is deliberately stateless-first: we clear any cached approval and
  * force the wallet chooser on every connect, so switching accounts in the
  * wallet (e.g. sender -> recipient) always takes effect. Cached data made
@@ -18,12 +23,19 @@
  */
 
 import { type ReactNode, useEffect, useCallback } from "react";
+import {
+  connect,
+  disconnect as walletDisconnect,
+  isConnected,
+  getLocalStorage,
+} from "@stacks/connect";
 import { toast } from "sonner";
 import { useWalletStore } from "@/stores/wallet-store";
 import {
   isUserCancel,
   isNoResponse,
   isNoWalletFound,
+  isStaleChunk,
   walletErrorDetail,
 } from "@/lib/wallet-errors";
 
@@ -35,37 +47,34 @@ export function StacksProvider({ children }: { children: ReactNode }) {
 
   // Rehydrate connection on mount from @stacks/connect localStorage
   useEffect(() => {
-    (async () => {
+    try {
+      // Purge pre-v8 leftovers. Returning visitors carry the legacy
+      // UserSession blob, and our persisted store may claim "connected"
+      // from that era — without a matching v8 session the UI would lie
+      // and wallet actions would misbehave.
       try {
-        // Purge pre-v8 leftovers. Returning visitors carry the legacy
-        // UserSession blob, and our persisted store may claim "connected"
-        // from that era — without a matching v8 session the UI would lie
-        // and wallet actions would misbehave.
-        try {
-          localStorage.removeItem("blockstack-session");
-          localStorage.removeItem("blockstack-gaia-hub-config");
-        } catch {
-          /* storage unavailable — nothing to clean */
-        }
+        localStorage.removeItem("blockstack-session");
+        localStorage.removeItem("blockstack-gaia-hub-config");
+      } catch {
+        /* storage unavailable — nothing to clean */
+      }
 
-        const { isConnected, getLocalStorage } = await import("@stacks/connect");
-        if (isConnected()) {
-          const stx = getLocalStorage()?.addresses.stx.find((a) =>
-            STX_ADDRESS_RE.test(a.address)
-          );
-          if (stx) {
-            setAddress(stx.address);
-            return;
-          }
+      if (isConnected()) {
+        const stx = getLocalStorage()?.addresses.stx.find((a) =>
+          STX_ADDRESS_RE.test(a.address)
+        );
+        if (stx) {
+          setAddress(stx.address);
+          return;
         }
-        // No live v8 session: make the UI agree (clears any stale
-        // persisted "connected" state from before the migration).
-        disconnect();
-      } catch {
-        // Stale or incompatible connect data — start fresh
-        disconnect();
       }
-    })();
+      // No live v8 session: make the UI agree (clears any stale
+      // persisted "connected" state from before the migration).
+      disconnect();
+    } catch {
+      // Stale or incompatible connect data — start fresh
+      disconnect();
+    }
   }, [setAddress, disconnect]);
 
   return <>{children}</>;
@@ -78,10 +87,6 @@ export function useStacksAuth() {
   const handleConnect = useCallback(async () => {
     setConnecting(true);
     try {
-      const { connect, disconnect: walletDisconnect } = await import(
-        "@stacks/connect"
-      );
-
       // Drop any cached approval/addresses so the wallet is always asked
       // fresh — otherwise a reconnect can silently return the previously
       // approved account even after the user switched accounts in the wallet.
@@ -142,6 +147,13 @@ export function useStacksAuth() {
       );
     } catch (err) {
       console.error("[wallet connect]", err);
+      if (isStaleChunk(err)) {
+        // A deploy replaced the bundle under this open tab — reload onto
+        // the new build instead of surfacing module internals.
+        toast.info("StackStream was updated — refreshing…");
+        setTimeout(() => window.location.reload(), 800);
+        return;
+      }
       toast.error(`Wallet connection failed: ${walletErrorDetail(err)}`, {
         duration: 8000,
       });
@@ -150,9 +162,11 @@ export function useStacksAuth() {
   }, [setAddress, setConnecting]);
 
   const handleDisconnect = useCallback(() => {
-    import("@stacks/connect").then(({ disconnect: walletDisconnect }) => {
+    try {
       walletDisconnect();
-    });
+    } catch {
+      /* nothing cached */
+    }
     disconnect();
   }, [disconnect]);