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/cms/migrations/versions/cms_002_add_title_content_translations.py

@@ -1,7 +1,7 @@
 """add title_translations and content_translations to content_pages
 
 Revision ID: cms_002
-Revises: cms_001
+Revises: z_unique_subdomain_domain
 Create Date: 2026-03-02
 """
 
@@ -10,7 +10,7 @@ import sqlalchemy as sa
 from alembic import op
 
 revision = "cms_002"
-down_revision = "cms_001"
+down_revision = "z_unique_subdomain_domain"
 branch_labels = None
 depends_on = None