From 8649598c267f6c0f6345df2bb41e983c1d970ae4 Mon Sep 17 00:00:00 2001
From: Jeff Emmett <jeffemmett@gmail.com>
Date: Mon, 23 Mar 2026 16:00:51 -0700
Subject: [PATCH] fix(tab-cache): add Accept header so tab fetch works on
 private spaces

The TabCache fetchAndInject() was sending fetch() without Accept: text/html,
causing the server to treat it as an API request and return 401 on private
spaces. Also adds .catch() fallbacks to shell tab handlers for resilience.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 server/shell.ts     | 4 ++++
 shared/tab-cache.ts | 4 +++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/server/shell.ts b/server/shell.ts
index 0fdde38..022b414 100644
--- a/server/shell.ts
+++ b/server/shell.ts
@@ -935,6 +935,8 @@ export function renderShell(opts: ShellOptions): string {
             } else {
               window.location.href = window.__rspaceNavUrl(spaceSlug, moduleId);
             }
+          }).catch(() => {
+            window.location.href = window.__rspaceNavUrl(spaceSlug, moduleId);
           });
         } else {
           window.location.href = window.__rspaceNavUrl(spaceSlug, moduleId);
@@ -956,6 +958,8 @@ export function renderShell(opts: ShellOptions): string {
             } else {
               window.location.href = window.__rspaceNavUrl(spaceSlug, moduleId);
             }
+          }).catch(() => {
+            window.location.href = window.__rspaceNavUrl(spaceSlug, moduleId);
           });
         } else {
           window.location.href = window.__rspaceNavUrl(spaceSlug, moduleId);
diff --git a/shared/tab-cache.ts b/shared/tab-cache.ts
index 23f37ce..1c89977 100644
--- a/shared/tab-cache.ts
+++ b/shared/tab-cache.ts
@@ -192,7 +192,9 @@ export class TabCache {
 		app.appendChild(loadingPane);
 
 		try {
-			const resp = await fetch(fetchUrl);
+			const resp = await fetch(fetchUrl, {
+				headers: { "Accept": "text/html" },
+			});
 			if (!resp.ok) {
 				loadingPane.remove();
 				return false;