feat: Sprint 14 — Marketing & Monetization

- Landing page with hero, feature grid, trust signals
- Split-layout login redesign (admin + portal)
- Pricing page with storage tiers (5GB/50GB/unlimited)
- StorageQuotaService backend (V36 migration, 402 on exceeded)
- Frontend storage integration + 402 error handling
- StorageController uses TenantContext for tenant isolation
- onTierChange() hook for subscription tier updates

cannamanage-domain/src/main/java/de/cannamanage/domain/entity/Club.java

@@ -51,6 +51,12 @@ public class Club extends AbstractTenantEntity {
     @Column(name = "allowed_email_pattern", length = 255)
     private String allowedEmailPattern;
 
+    @Column(name = "storage_used_bytes", nullable = false)
+    private Long storageUsedBytes = 0L;
+
+    @Column(name = "storage_limit_bytes", nullable = false)
+    private Long storageLimitBytes = 5_368_709_120L; // 5 GB default
+
     @Enumerated(EnumType.STRING)
     @Column(name = "status", nullable = false, length = 50)
     private ClubStatus status = ClubStatus.ACTIVE;
@@ -99,4 +105,10 @@ public class Club extends AbstractTenantEntity {
 
     public ClubStatus getStatus() { return status; }
     public void setStatus(ClubStatus status) { this.status = status; }
+
+    public Long getStorageUsedBytes() { return storageUsedBytes; }
+    public void setStorageUsedBytes(Long storageUsedBytes) { this.storageUsedBytes = storageUsedBytes; }
+
+    public Long getStorageLimitBytes() { return storageLimitBytes; }
+    public void setStorageLimitBytes(Long storageLimitBytes) { this.storageLimitBytes = storageLimitBytes; }
 }