Add Neural browser favicon

src/main/java/com/example/mindflux/config/SecurityConfig.java

@@ -21,7 +21,7 @@ public class SecurityConfig {
     public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
         http
             .authorizeHttpRequests(auth -> auth
-                .requestMatchers("/", "/login", "/register", "/forgot-password", "/reset-password", "/verify-email", "/verification/resend", "/impressum", "/nutzungsbedingungen", "/datenschutz", "/richtlinien", "/css/**", "/js/**", "/img/**").permitAll()
+                .requestMatchers("/", "/login", "/register", "/forgot-password", "/reset-password", "/verify-email", "/verification/resend", "/impressum", "/nutzungsbedingungen", "/datenschutz", "/richtlinien", "/favicon.ico", "/css/**", "/js/**", "/img/**").permitAll()
                 .requestMatchers("/actuator/health").permitAll() // Container-Healthcheck
                 .requestMatchers("/admin/**").hasRole("ADMIN")
                 .requestMatchers("/api/users/**").hasRole("ADMIN")

src/main/java/com/example/mindflux/controller/FaviconController.java

@@ -0,0 +1,23 @@
+package com.example.mindflux.controller;
+
+import java.time.Duration;
+
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.Resource;
+import org.springframework.http.CacheControl;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class FaviconController {
+
+    @GetMapping(value = "/favicon.ico", produces = MediaType.IMAGE_PNG_VALUE)
+    public ResponseEntity<Resource> favicon() {
+        Resource emblem = new ClassPathResource("static/img/mindflux-emblem.png");
+        return ResponseEntity.ok()
+                .cacheControl(CacheControl.maxAge(Duration.ofDays(30)).cachePublic())
+                .body(emblem);
+    }
+}

src/test/java/com/example/mindflux/SecurityRulesTest.java

@@ -3,6 +3,7 @@ package com.example.mindflux;
 import com.example.mindflux.config.SecurityConfig;
 import com.example.mindflux.controller.AdminUserController;
 import com.example.mindflux.controller.DashboardController;
+import com.example.mindflux.controller.FaviconController;
 import com.example.mindflux.controller.ProgressController;
 import com.example.mindflux.controller.PlatformStatusController;
 import com.example.mindflux.dto.ProgressData;
@@ -28,9 +29,10 @@ import static org.springframework.security.test.web.servlet.request.SecurityMock
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
 
 /** Absichert die zentralen Security-Regeln: Login-Zwang, Admin-Schutz, gelöschter Legacy-Endpunkt. */
-@WebMvcTest(controllers = {DashboardController.class, ProgressController.class, PlatformStatusController.class, AdminUserController.class})
+@WebMvcTest(controllers = {DashboardController.class, ProgressController.class, PlatformStatusController.class, AdminUserController.class, FaviconController.class})
 @Import(SecurityConfig.class)
 class SecurityRulesTest {
 
@@ -58,6 +60,13 @@ class SecurityRulesTest {
                 .andExpect(status().is3xxRedirection());
     }
 
+    @Test
+    void faviconIstOhneAnmeldungErreichbar() throws Exception {
+        mockMvc.perform(get("/favicon.ico"))
+                .andExpect(status().isOk())
+                .andExpect(content().contentType("image/png"));
+    }
+
     @Test
     @WithMockUser(username = "alice")
     void eingeloggteNutzerSehenDasDashboard() throws Exception {