Fix memory leak in dev server

src/functions/server/web-pages/generate-web-html.tsx

@@ -180,8 +180,27 @@ export default async function genWebHTML({
     let render_error: any;
     let has_render_error = false;
 
+    const render_timeout_ms =
+        global.BUNEXT_CONFIG.ssr_render_timeout_ms ||
+        AppData["DefaultSSRRenderTimeoutMs"];
+
+    // Without a deadline, a Suspense boundary that never settles keeps the
+    // request (and its whole render tree) alive forever. The timer is
+    // cleared once the render ends so finished requests don't linger.
+    const render_abort = new AbortController();
+    const render_timeout = setTimeout(
+        () =>
+            render_abort.abort(
+                new RenderTimeoutError(
+                    `Page render timed out after ${render_timeout_ms}ms`,
+                ),
+            ),
+        render_timeout_ms,
+    );
+
     try {
         const stream = await renderToReadableStream(final_component, {
+            signal: render_abort.signal,
             onError(error: any) {
                 if (error?.message?.includes('unique "key" prop')) return;
 
@@ -190,12 +209,16 @@ export default async function genWebHTML({
                     render_error = error;
                 }
 
-                original_console.error(error);
+                // A timeout has no useful stack; it's logged upstream.
+                if (!(error instanceof RenderTimeoutError)) {
+                    original_console.error(error);
+                }
             },
         });
 
         htmlBody = await new Response(stream).text();
     } finally {
+        clearTimeout(render_timeout);
         restoreConsole();
     }
 
@@ -211,6 +234,8 @@ export default async function genWebHTML({
     return html;
 }
 
+class RenderTimeoutError extends Error {}
+
 let original_console: Pick<
     Console,
     "log" | "warn" | "error" | "info" | "debug"