feat(hosting): add HostWizard platform module and fix migration chain

- Add complete hosting module (models, routes, schemas, services, templates, migrations)
- Add HostWizard platform to init_production seed (code=hosting, domain=hostwizard.lu)
- Fix cms_002 migration down_revision to z_unique_subdomain_domain
- Fix prospecting_001 migration to chain after cms_002 (remove branch label)
- Add hosting/prospecting version_locations to alembic.ini
- Fix admin_services delete endpoint to use proper response model
- Add hostwizard.lu to deployment docs (DNS, Caddy, Cloudflare)
- Add hosting and prospecting user journey docs to mkdocs nav

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/hosting/locales/de.json

@@ -0,0 +1,22 @@
+{
+    "hosting": {
+        "page_title": "Hosting",
+        "dashboard_title": "Hosting Dashboard",
+        "sites": "Webseiten",
+        "clients": "Kundendienste",
+        "loading": "Laden...",
+        "error_loading": "Fehler beim Laden der Daten"
+    },
+    "permissions": {
+        "view": "Hosting anzeigen",
+        "view_desc": "Zugriff auf gehostete Webseiten, Dienste und Statistiken",
+        "manage": "Hosting verwalten",
+        "manage_desc": "Gehostete Webseiten und Dienste erstellen, bearbeiten und verwalten"
+    },
+    "menu": {
+        "hosting": "Hosting",
+        "dashboard": "Dashboard",
+        "sites": "Webseiten",
+        "clients": "Kundendienste"
+    }
+}