feat(sprint-1): CannaManage foundation — compliance engine, JPA entities, tests TC-001→TC-025

- Maven multi-module project (parent + domain + service + api)
- AbstractTenantEntity with Hibernate @Filter for multi-tenancy (explicit getters/setters, Java 25 compatible)
- TenantContext ThreadLocal for request-scoped tenant isolation
- 8 JPA entities: Club, Member, Strain, Batch, Distribution, MonthlyQuota, StockMovement, User
- ComplianceConstants with CanG §19 limits (25g/day adult, 50g/month adult, 30g/month under-21, 10% THC cap)
- ComplianceService: checkDistributionAllowed() with fail-fast sequential CanG checks
- Unit tests TC-001→TC-025: 25/25 passing, 100% line+branch coverage on ComplianceService (JaCoCo 0.8.13)
- Flyway V1__initial_schema.sql: all 8 tables + indexes
- docker-compose.yml: PostgreSQL 16 local dev
- application-local.properties: local profile configuration

Closes #1 #2 #3 #4 #5 #6 #7 #8 #9 #10

cannamanage-api/src/main/java/de/cannamanage/api/CannaManageApplication.java

@@ -0,0 +1,21 @@
+package de.cannamanage.api;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+/**
+ * CannaManage Spring Boot application entry point.
+ * REST controllers are deferred to Sprint 2.
+ * Sprint 1 focus: compliance engine validation only.
+ */
+@SpringBootApplication(scanBasePackages = "de.cannamanage")
+@EntityScan(basePackages = "de.cannamanage.domain.entity")
+@EnableJpaRepositories(basePackages = "de.cannamanage.service.repository")
+public class CannaManageApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(CannaManageApplication.class, args);
+    }
+}