add direct invitation link

src/pages/signup/[...hash].astro

@@ -0,0 +1,18 @@
+---
+import { db } from '@db/database.ts';
+import Signup from '@app/website/signup/Signup.astro';
+
+const { hash } = Astro.params;
+
+const directSignup = await db.getDirectSignupByHash({ hash: hash! });
+if (!directSignup) return new Response(null, { status: 404 });
+---
+
+<Signup
+  signupHash={hash}
+  signupDisabled={directSignup.user
+    ? {
+        message: 'Es hat sich bereits jemand mit diesem Einladungslink registriert'
+      }
+    : undefined}
+/>

src/pages/signup/index.astro

@@ -0,0 +1,24 @@
+---
+import { getSettings, SettingKey } from '@util/settings.ts';
+import { db } from '@db/database.ts';
+import Signup from '@app/website/signup/Signup.astro';
+
+const signupSetting = await getSettings(db, [
+  SettingKey.SignupEnabled,
+  SettingKey.SignupDisabledMessage,
+  SettingKey.SignupDisabledSubMessage
+]);
+const signupEnabled = signupSetting[SettingKey.SignupEnabled] ?? false;
+const signupDisabledMessage = signupSetting[SettingKey.SignupDisabledMessage] ?? 'Anmeldung deaktiviert';
+const signupDisabledSubMessage = signupSetting[SettingKey.SignupDisabledSubMessage] ?? '';
+---
+
+<Signup
+  signupDisabled={signupEnabled
+    ? undefined
+    : {
+        message: signupDisabledMessage,
+        subMessage: signupDisabledSubMessage
+      }}
+  }
+/>