feat(billing): update pricing tiers to MyEasyCMS plans (EUR)

Replace MakerKit sample billing config with actual MyEasyCMS tiers:
- Starter: 29€/mo (250 members) — Mitgliederverwaltung, SEPA, Website, Newsletter
- Pro: 59€/mo (1.000 members) — Kursverwaltung, Buchungen, unbegrenzte Benutzer
- Verband: 199€/mo (10.000 members) — Mehrebenen-Hierarchie, Verbandssuche
- Enterprise: 349€/mo (unlimited) — dedizierte Infrastruktur, SLA, API

All plans: EUR currency, German feature labels, yearly = ~2 months free.
Also update marketing i18n subtitles.

apps/web/i18n/messages/en/marketing.json

@@ -13,7 +13,7 @@
   "faq": "FAQ",
   "faqSubtitle": "Frequently asked questions about MYeasyCMS",
   "pricing": "Pricing",
-  "pricingSubtitle": "Plans and pricing options",
+  "pricingSubtitle": "Fair pricing by club size — all features included",
   "backToBlog": "Back to blog",
   "noPosts": "No posts found",
   "blogPaginationNext": "Next Page",
@@ -43,28 +43,23 @@
   "contactErrorDescription": "An error occurred while sending your message. Please try again later",
   "footerDescription": "Association and federation management from Bavaria — personal, reliable, and fair since 2004. Developed by Com.BISS GmbH, Schierling.",
   "copyright": "© 2004–{year} Com.BISS GmbH. All Rights Reserved.",
-
   "heroPill": "Since 2004 — 22 years of experience",
   "heroTitle": "Association management that grows with you",
   "heroTitleLine1": "Association management that",
   "heroTitleLine2": "grows with you",
   "heroSubtitle": "From member management to SEPA direct debit — the software trusted by associations and federations across Bavaria for two decades. 69,000 managed members, 90+ connected organizations.",
-
   "trustedBy": "Trusted by associations and federations across Bavaria",
   "trustAssociations": "3 District Fishing Federations",
   "trustSchools": "Adult Education Centers",
   "trustClubs": "90+ Connected Clubs",
   "trustOrganizations": "City of Regensburg since 2010",
-
   "statMembers": "Members managed",
   "statOrganizations": "Organizations",
   "statYears": "Years of experience",
   "statFederations": "District federations",
-
   "featuresHeading": "Everything your organization needs",
   "featuresSubheading": "MYeasyCMS was built specifically for associations and federations — modular, web-based, accessible from any browser.",
   "featuresLabel": "Core Modules",
-
   "featureMembersTitle": "Member Management",
   "featureMembersDesc": "Master data, contact information, mandates, honors, history, and notes — all in one place. With departments, dues tracking, and membership cards.",
   "featureCoursesTitle": "Course Management",
@@ -77,10 +72,8 @@
   "featureFinanceDesc": "Dues and fee management, SEPA direct debit mandates, XML export, and account management by fiscal year. Invoices and payments under control.",
   "featureNewsletterTitle": "Email & Newsletter",
   "featureNewsletterDesc": "Email communication with members and newsletter distribution with templates. Keep your members informed.",
-
   "showcaseHeading": "A powerful dashboard at a glance",
   "showcaseDescription": "Get a complete overview of your organization — members, courses, open invoices, and events — all from one central place. Quick actions for the most common tasks.",
-
   "testimonialsHeading": "What our customers say",
   "testimonialsSubheading": "Organizations across Bavaria trust MYeasyCMS for their daily work.",
   "testimonial1Quote": "MYeasyCMS has simplified our member management enormously. The personal support is unmatched.",
@@ -92,18 +85,15 @@
   "testimonial3Quote": "The SEPA integration alone saves us hours every month. And the team implements our requests faster than any provider we have worked with.",
   "testimonial3Name": "Sports Association",
   "testimonial3Role": "Schierling, Customer since 2010",
-
   "additionalFeaturesHeading": "And there's more",
   "additionalFeaturesSubheading": "Additional tools that simplify every aspect of daily association work.",
   "additionalFeaturesLabel": "More Features",
-
   "featureDocumentsTitle": "Documents & Cards",
   "featureDocumentsDesc": "Membership cards, invoices, labels, reports, letters, and certificates — generated from templates, exportable as PDF and Excel.",
   "featureSiteBuilderTitle": "Club Website",
   "featureSiteBuilderDesc": "Create your club's public website without programming — with a drag-and-drop editor, events, and course offerings directly from the CMS.",
   "featureModulesTitle": "Custom Modules",
   "featureModulesDesc": "Extend the platform with custom data modules for waters, catch books, work duties, or any other club data.",
-
   "whyChooseHeading": "Why organizations trust Com.BISS",
   "whyChooseDescription": "In 2004, five women came together and founded a web agency. Since then, we've worked hand in hand with our customers — personal, fair, and reliable. Managing directors: Brit Schiergl and Elisabeth Zehetbauer.",
   "whyResponsiveTitle": "Personal",
@@ -114,7 +104,6 @@
   "whySupportDesc": "Fair prices, fast and flexible implementation of customer requests. New features and changes at fixed prices — no surprises.",
   "whyGdprTitle": "100% Servers in Germany",
   "whyGdprDesc": "Based in Schierling near Regensburg. Servers in Germany. GDPR compliant. Your data stays here.",
-
   "howItWorksHeading": "Get started in three simple steps",
   "howItWorksSubheading": "Setting up your organization on MYeasyCMS takes just minutes.",
   "howStep1Title": "Request test access",
@@ -123,12 +112,10 @@
   "howStep2Desc": "Activate the modules you need — members, dues, waters, SEPA — and customize them to fit your organization.",
   "howStep3Title": "Start managing",
   "howStep3Desc": "Import your existing member lists and get started right away — with personal support from our team.",
-
   "pricingPillLabel": "Fair Pricing",
-  "pricingPillText": "No limit on number of users",
-  "pricingHeading": "Fair pricing based on club size",
-  "pricingSubheading": "All features included. No hidden costs. Personal setup with every plan.",
-
+  "pricingPillText": "No user limits",
+  "pricingHeading": "Fair pricing by club size",
+  "pricingSubheading": "All features included. No hidden costs. Personal onboarding with every plan.",
   "ctaHeading": "Ready for management that simply works?",
   "ctaDescription": "Request a free test account — or get personal consultation. Phone: 09451 9499-09.",
   "ctaButtonPrimary": "Request free test access",