Auth restricted endpoint is picky about the trailing slash, use it consistently.

cista/auth.py

@@ -269,7 +269,7 @@ async def verify(request, *, privileged=False):
     raise Unauthorized(
         f"Login required for {request.path}",
         "cookie",
-        context={"auth": {"iframe": "/auth/restricted"}},
+        context={"auth": {"iframe": "/auth/restricted/"}},
         quiet=True,
     )
 
@@ -278,7 +278,7 @@ async def verify(request, *, privileged=False):
 bp = Blueprint("auth", url_prefix="/auth")
 
 
-@bp.get("/restricted")
+@bp.get("/restricted/")
 async def login_page(request):
     """Login page that works both standalone and in paskia iframe."""
     s = session.get(request)

frontend/src/components/HeaderMain.vue

@@ -115,7 +115,7 @@ const settingsMenu = (e: Event) => {
     // Show login option only in public mode (non-public modes trigger auth automatically)
     items.push({ label: '🔐 Login', onClick: async () => {
       try {
-        await showAuthIframe('/auth/restricted#theme=light')
+        await showAuthIframe('/auth/restricted/#theme=light')
         resumeWatching()
       } catch (e) {
         console.log('Login cancelled')