diff --git a/apps/readest-app/src/app/layout.tsx b/apps/readest-app/src/app/layout.tsx
index 59d769fb..4fce12dc 100644
--- a/apps/readest-app/src/app/layout.tsx
+++ b/apps/readest-app/src/app/layout.tsx
@@ -123,6 +123,13 @@ const devHmrPatchScript = `(${patchTauriHmrWebSocket.toString()})(${JSON.stringi
process.env['TAURI_DEV_HOST'],
)});`;
+// `/runtime-config.js` is a dynamic route handler that only exists in the
+// web/Docker build. The Tauri build is statically exported (`output:
+// 'export'`), so the file isn't emitted — the request would return the SPA
+// fallback HTML and crash with `Unexpected token '<'`. All runtime-config
+// consumers fall back to `NEXT_PUBLIC_*` envs baked at build time on Tauri.
+const shouldInjectRuntimeConfig = process.env['NEXT_PUBLIC_APP_PLATFORM'] === 'web';
+
export default function RootLayout({ children }: { children: React.ReactNode }) {
return (
-
+ {shouldInjectRuntimeConfig ? (
+
+ ) : null}
{shouldInjectDevHmrPatch ? (
) : null}
diff --git a/apps/readest-app/src/pages/_document.tsx b/apps/readest-app/src/pages/_document.tsx
index ff775cb5..576bc357 100644
--- a/apps/readest-app/src/pages/_document.tsx
+++ b/apps/readest-app/src/pages/_document.tsx
@@ -1,6 +1,9 @@
import { Html, Head, Main, NextScript } from 'next/document';
import Script from 'next/script';
+// Only the web/Docker build serves `/runtime-config.js`. See app/layout.tsx.
+const shouldInjectRuntimeConfig = process.env['NEXT_PUBLIC_APP_PLATFORM'] === 'web';
+
export default function Document() {
return (
@@ -8,7 +11,9 @@ export default function Document() {
{/* beforeInteractive must live in _document (not _app) to guarantee the
script runs before any client-side module evaluation. */}
-
+ {shouldInjectRuntimeConfig ? (
+
+ ) : null}