Dialog portalem do body, hlavicky odpovedi u chyby

Dialog se vykresloval uvnitr karty konektoru misto pres obrazovku. Samo
position: fixed nestaci: rodic s backdrop-filter (nase .glass, tedy skoro
kazdy panel a karta) je pro fixed potomka containing block. Modal proto jde
portalem do document.body. Tykalo se to vsech dialogu, videt to bylo az
u Logu, ktere jsou v male karte.

K chybe se zapisuji vybrane hlavicky odpovedi: server, via, content-type,
www-authenticate, retry-after, x-request-id, date. Rikaji, kdo odpoved vydal.
Server: Kestrel je sama aplikace, Via: 1.1 Caddy proxy pred ni. U 403 od proxy
byva telo prazdne a bez hlavicek by nezbylo vubec nic. Allowlist, ne vsechno:
Set-Cookie a podobne do zaznamu nepatri.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/routes/connectors.ts

@@ -289,6 +289,7 @@ connectorsRouter.post('/:id/test', async (req, res) => {
         message,
         detail: null,
         request: null,
+        responseHeaders: null,
       },
       [tenantId],
     );
@@ -334,6 +335,7 @@ connectorsRouter.post('/:id/test', async (req, res) => {
         message,
         detail: null,
         request,
+        responseHeaders: null,
       },
       [tenantId],
     );
@@ -359,6 +361,9 @@ connectorsRouter.post('/:id/test', async (req, res) => {
 
     const request =
       isScriptError && err.request ? err.request : { method: 'GET', path, url: verifyUrl };
+    // Hlavicky rikaji, kdo odpoved vydal. U 403 bez tela je to vsechno,
+    // co zbyde: `Server: Kestrel` je aplikace, `Via: 1.1 Caddy` proxy.
+    const responseHeaders = isScriptError ? (err.responseHeaders ?? null) : null;
     const check: ConnectorCheck = {
       at: new Date().toISOString(),
       ok: false,
@@ -367,6 +372,7 @@ connectorsRouter.post('/:id/test', async (req, res) => {
       message,
       detail: detail ?? null,
       request,
+      responseHeaders,
     };
 
     await setConnectorStatus(connector.id, 'error', message, check, [tenantId]);
@@ -380,6 +386,7 @@ connectorsRouter.post('/:id/test', async (req, res) => {
       ...(status !== undefined ? { status } : {}),
       request,
       baseUrl: target.baseUrl,
+      ...(responseHeaders ? { responseHeaders } : {}),
       ...(detail ? { detail } : {}),
     });
   } finally {