passkey existing

apps/server/internal/httpserver/static/auth.js

@@ -251,6 +251,26 @@
     }
   });
 
+  document.querySelector("[data-passkey-add]")?.addEventListener("submit", async (event) => {
+    event.preventDefault();
+    const support = await checkPasskeySupport();
+    if (!support.supported) {
+      setStatus("[data-passkey-add-status]", support.reason, true);
+      return;
+    }
+    if (support.reason) {
+      console.warn("Passkey support:", support.reason);
+    }
+    try {
+      const begin = await postJSON("/api/auth/passkeys/me/register/begin", {});
+      const credential = await navigator.credentials.create(normalizeCreateOptions(begin.options));
+      await postJSON(`/api/auth/passkeys/me/register/finish?challengeId=${encodeURIComponent(begin.challengeId)}`, credentialToJSON(credential));
+      setStatus("[data-passkey-add-status]", "Passkey added. You can use it the next time you sign in.");
+    } catch (error) {
+      setStatus("[data-passkey-add-status]", webAuthnErrorMessage(error), true);
+    }
+  });
+
   document.querySelector("[data-auth-logout]")?.addEventListener("click", async () => {
     try {
       await postJSON("/api/auth/logout", {});