feat: add homepage and improve entity FK handling

- Add HomeController with beautiful HTML landing page
- Add /health endpoint for quick health checks
- Allow root path (/) and /health without authentication
- Fix entity @PrePersist to sync FK fields from relations
- Remove TeamMember->Role relation (use roleId as team role string)
- Fix TeamMemberRepository query to use roleId directly

Author: h7ml

src/main/java/com/halolight/config/SecurityConfig.java

@@ -34,6 +34,7 @@ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Excepti
                 .cors(cors -> cors.configurationSource(corsConfigurationSource))
                 .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                 .authorizeHttpRequests(auth -> auth
+                        .requestMatchers("/", "/health").permitAll()
                         .requestMatchers("/api/auth/**").permitAll()
                         .requestMatchers("/api/health").permitAll()
                         .requestMatchers("/docs/**", "/swagger-ui/**", "/v3/api-docs/**", "/swagger-ui.html").permitAll()

src/main/java/com/halolight/controller/HomeController.java

@@ -61,5 +61,8 @@ public void prePersist() {
         if (this.id == null) {
             this.id = java.util.UUID.randomUUID().toString().replace("-", "").substring(0, 25);
         }
+        if (this.userId == null && this.user != null) {
+            this.userId = this.user.getId();
+        }
     }
 }

src/main/java/com/halolight/domain/entity/ActivityLog.java

@@ -87,5 +87,11 @@ public void prePersist() {
         if (this.id == null) {
             this.id = java.util.UUID.randomUUID().toString().replace("-", "").substring(0, 25);
         }
+        if (this.organizerId == null && this.organizer != null) {
+            this.organizerId = this.organizer.getId();
+        }
+        if (this.teamId == null && this.team != null) {
+            this.teamId = this.team.getId();
+        }
     }
 }

src/main/java/com/halolight/domain/entity/CalendarEvent.java

@@ -85,5 +85,11 @@ public void prePersist() {
         if (this.id == null) {
             this.id = java.util.UUID.randomUUID().toString().replace("-", "").substring(0, 25);
         }
+        if (this.ownerId == null && this.owner != null) {
+            this.ownerId = this.owner.getId();
+        }
+        if (this.teamId == null && this.team != null) {
+            this.teamId = this.team.getId();
+        }
     }
 }

src/main/java/com/halolight/domain/entity/Document.java

@@ -75,5 +75,14 @@ public void prePersist() {
         if (this.id == null) {
             this.id = java.util.UUID.randomUUID().toString().replace("-", "").substring(0, 25);
         }
+        if (this.ownerId == null && this.owner != null) {
+            this.ownerId = this.owner.getId();
+        }
+        if (this.parentId == null && this.parent != null) {
+            this.parentId = this.parent.getId();
+        }
+        if (this.teamId == null && this.team != null) {
+            this.teamId = this.team.getId();
+        }
     }
 }

src/main/java/com/halolight/domain/entity/Folder.java

@@ -62,5 +62,8 @@ public void prePersist() {
         if (this.id == null) {
             this.id = java.util.UUID.randomUUID().toString().replace("-", "").substring(0, 25);
         }
+        if (this.userId == null && this.user != null) {
+            this.userId = this.user.getId();
+        }
     }
 }

src/main/java/com/halolight/domain/entity/Notification.java

@@ -50,10 +50,6 @@ public class Role {
     @Builder.Default
     private Set<UserRole> users = new LinkedHashSet<>();
 
-    @OneToMany(mappedBy = "role")
-    @Builder.Default
-    private Set<TeamMember> teamMembers = new LinkedHashSet<>();
-
     @PrePersist
     public void prePersist() {
         if (this.id == null) {

src/main/java/com/halolight/domain/entity/Role.java

@@ -76,5 +76,14 @@ public void prePersist() {
         if (this.id == null) {
             this.id = java.util.UUID.randomUUID().toString().replace("-", "").substring(0, 25);
         }
+        if (this.ownerId == null && this.owner != null) {
+            this.ownerId = this.owner.getId();
+        }
+        if (this.folderId == null && this.folder != null) {
+            this.folderId = this.folder.getId();
+        }
+        if (this.teamId == null && this.team != null) {
+            this.teamId = this.team.getId();
+        }
     }
 }

src/main/java/com/halolight/domain/entity/StorageFile.java

@@ -73,5 +73,8 @@ public void prePersist() {
         if (this.id == null) {
             this.id = java.util.UUID.randomUUID().toString().replace("-", "").substring(0, 25);
         }
+        if (this.ownerId == null && this.owner != null) {
+            this.ownerId = this.owner.getId();
+        }
     }
 }