ζ-0 Setup: Repo-Skelett, iOS-Build grün, Healthz live

- project.yml mit Bundle ev.mana.zitare + Widget + ShareExt-Targets
- ManaSwiftCore (ManaCore + ManaTokens) + ManaSwiftUI (ManaAuthUI)
  als Package-Dependencies via path:
- Pure SwiftUI für Native-Surfaces, WKWebView nur für Lese-Tabs
  (Hybrid-Sonderfall vs cards/memoro/manaspur, dokumentiert im
  Playbook ZITARE_NATIVE_GREENFIELD.md)
- Theme: paper-Variant aus @mana/themes
- ZitareAPI.healthCheck via direct URLSession (öffentlicher
  Endpoint, kein AuthenticatedTransport-Gate)
- 6/6 AppConfigTests + 1/1 UI-Smoke grün auf iPhone 16e Simulator
- Live: zitare-api.mana.how/healthz → HTTP/2 200

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Sources/Features/Settings/SettingsView.swift

@@ -0,0 +1,19 @@
+import SwiftUI
+
+/// Phase ζ-5 Placeholder.
+///
+/// Aufgabenliste in ζ-5:
+///
+/// - Theme-Toggle (System / Light / Dark) — propagiert per
+///   `localStorage['zitare-mode']` an den WebView.
+/// - Reader-Schriftgröße (S/M/L/XL) — per JS-Bridge an die Web-CSS-
+///   Variable `--zit-reader-size`.
+/// - DSGVO-Daten-Export (öffnet `zitare.mana.how/me` Export-Page im
+///   WebView).
+/// - About / Impressum / Lizenz (CC-BY-SA-4.0).
+struct SettingsView: View {
+    var body: some View {
+        Text("Einstellungen — ζ-5 TODO")
+            .foregroundStyle(.secondary)
+    }
+}