running finally..

docker/backend/Dockerfile

@@ -1,34 +0,0 @@
-# Stage 1: Build the application (The Build Stage)
-# Use a Java SDK image with Maven pre-installed
-FROM maven:3.9-jdk-17-slim AS build
-
-# Set the working directory inside the container
-WORKDIR /app
-
-# Copy the Maven project files (pom.xml) first to leverage Docker layer caching
-COPY pom.xml .
-
-# Copy the source code
-COPY src ./src
-
-# Build the Spring Boot application, skipping tests to speed up the Docker build
-# This creates the executable JAR file in the 'target' directory
-RUN mvn clean package -DskipTests
-
-# Stage 2: Create the final lightweight image (The Runtime Stage)
-# Use a smaller Java Runtime Environment (JRE) image for a smaller footprint
-FROM openjdk:17-jre-slim
-
-# Set the working directory in the final image
-WORKDIR /app
-
-# Copy the built JAR file from the 'build' stage into the final image
-# The JAR file is typically named 'target/<your-app-name>-<version>.jar'
-# You may need to adjust the name if you have a non-standard pom.xml
-COPY --from=build /app/target/*.jar app.jar
-
-# Expose the default Spring Boot port
-EXPOSE 8080
-
-# Define the command to run the application
-ENTRYPOINT ["java", "-jar", "app.jar"]

docker/bb-spring/Dockerfile

@@ -0,0 +1,17 @@
+# Stage 1: Build the application
+FROM openjdk:17-jdk-slim as build
+WORKDIR /app
+COPY gradlew .
+COPY settings.gradle .
+COPY build.gradle .
+COPY src ./src
+# Adjust the build command for Maven: ./mvnw package -DskipTests
+RUN ./gradlew bootJar
+
+# Stage 2: Create the final lightweight image
+FROM openjdk:17-jre-slim
+WORKDIR /app
+# Get the built JAR from the build stage
+COPY --from=build /app/build/libs/*.jar app.jar
+EXPOSE 8080
+ENTRYPOINT ["java", "-jar", "app.jar"]

docker/docker-compose.yaml

@@ -2,18 +2,20 @@ version: '3.8'
 
 services:
   # --- 1. Spring API Service (Backend) ---
-  ss_builder-api:
+  spring-api:
     build:
       context: ./backend # Path to your Spring project's root folder
       dockerfile: Dockerfile # Assumes you have a Dockerfile in ./backend
-    container_name: ss_builder-api
+    container_name: spring-api
     ports:
       - "8080:8080" # Map host port 8080 to container port 8080
     environment:
       # These environment variables link the API to the database service defined below
-      - SPRING_DATASOURCE_URL=jdbc:postgresql://r710.dev.gofwd.group:5433/ss_builder
-      - SPRING_DATASOURCE_USERNAME=dba
-      - SPRING_DATASOURCE_PASSWORD=!@#Qwerty
+      - SPRING_DATASOURCE_URL=jdbc:postgresql://db:5432/mydatabase
+      - SPRING_DATASOURCE_USERNAME=myuser
+      - SPRING_DATASOURCE_PASSWORD=mypassword
+    depends_on:
+      - db
     networks:
       - app-network
 
@@ -22,20 +24,38 @@ services:
     build:
       context: ./frontend # Path to your Next.js project's root folder
       dockerfile: Dockerfile # Assumes you have a Dockerfile in ./frontend
-    container_name: ss_builder-app
+    container_name: nextjs-app
     ports:
       - "3000:3000" # Map host port 3000 to container port 3000
     environment:
       # This variable is crucial: Next.js needs the URL for the Spring API
       # Use the Docker internal service name 'spring-api' and its port 8080
-      - NEXT_PUBLIC_API_URL=http://ss_builder-api:8080
+      - NEXT_PUBLIC_API_URL=http://spring-api:8080
       # For local testing, you might need the host IP for Next.js to call back
       # - NEXT_PUBLIC_API_URL_LOCAL=http://localhost:8080
     depends_on:
-      - ss_builder-api
+      - spring-api
     networks:
       - app-network
 
+  # --- 3. PostgreSQL Database Service (Example Dependency) ---
+  db:
+    image: postgres:15-alpine # Lightweight and stable PostgreSQL image
+    container_name: postgres-db
+    environment:
+      - POSTGRES_DB=mydatabase
+      - POSTGRES_USER=myuser
+      - POSTGRES_PASSWORD=mypassword
+    volumes:
+      - postgres_data:/var/lib/postgresql/data # Persist the database data
+    ports:
+      - "5432:5432" # Optional: Map DB port for external access (e.g., DBeaver)
+    networks:
+      - app-network
+
+# --- Docker Volume for Persistent Data ---
+volumes:
+  postgres_data:
 
 # --- Docker Network for Inter-Container Communication ---
 networks:

src/main/java/group/goforward/ballistic/configuration/CorsConfig.java

@@ -30,8 +30,13 @@ public class CorsConfig {
                 "https://localhost:8080",
                 "http://localhost:3000",
                 "https://localhost:3000",
-                "https://localhost:3000/gunbuilder",
-                "http://localhost:3000/gunbuilder"
+                "http://192.168.11.210:8070",
+                "https://192.168.11.210:8070",
+                "http://citysites.gofwd.group",
+                "https://citysites.gofwd.group",
+                "http://citysites.gofwd.group:8070",
+                "https://citysites.gofwd.group:8070"
+
         ));
 
         // Allow all headers

src/main/java/group/goforward/ballistic/configuration/SecurityConfig.java

@@ -24,14 +24,19 @@ public class SecurityConfig {
                 sm.sessionCreationPolicy(SessionCreationPolicy.STATELESS)
             )
             .authorizeHttpRequests(auth -> auth
+                
                 // Auth endpoints always open
                 .requestMatchers("/api/auth/**").permitAll()
+                
                 // Swagger / docs
                 .requestMatchers("/swagger-ui/**", "/v3/api-docs/**").permitAll()
+                
                 // Health
                 .requestMatchers("/actuator/health", "/actuator/info").permitAll()
+                
                 // Public product endpoints
                 .requestMatchers("/api/products/gunbuilder/**").permitAll()
+
                 // Everything else (for now) also open – we can tighten later
                 .anyRequest().permitAll()
             );

src/main/java/group/goforward/ballistic/controllers/BrandController.java

@@ -1,51 +0,0 @@
-package group.goforward.ballistic.controllers;
-
-import group.goforward.ballistic.model.Brand;
-import group.goforward.ballistic.model.State;
-import group.goforward.ballistic.repos.BrandRepository;
-import group.goforward.ballistic.services.BrandService;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-
-import java.util.List;
-
-
-@RestController
-@RequestMapping("/api/brands")
-public class BrandController {
-    @Autowired
-    private BrandRepository repo;
-    @Autowired
-    private BrandService brandService;
-//@Cacheable(value="getAllStates")
-    @GetMapping("/all")
-    public ResponseEntity<List<Brand>> getAllBrands() {
-        List<Brand> brand = repo.findAll();
-        return ResponseEntity.ok(brand);
-    }
-
-    @GetMapping("/{id}")
-    public ResponseEntity<Brand> getAllBrandsById(@PathVariable Integer id) {
-        return repo.findById(id)
-                .map(ResponseEntity::ok)
-                .orElse(ResponseEntity.notFound().build());
-    }
-
-    @PostMapping("/add")
-    public ResponseEntity<Brand> createbrand(@RequestBody Brand item) {
-        Brand created = brandService.save(item);
-        return ResponseEntity.status(HttpStatus.CREATED).body(created);
-    }
-
-    @DeleteMapping("/delete/{id}")
-    public ResponseEntity<Void> deleteItem(@PathVariable Integer id) {
-        return brandService.findById(id)
-                .map(item -> {
-                    brandService.deleteById(id);
-                    return ResponseEntity.noContent().<Void>build();
-                })
-                .orElse(ResponseEntity.notFound().build());
-    }
-}

src/main/java/group/goforward/ballistic/controllers/CategoryController.java

@@ -0,0 +1,34 @@
+package group.goforward.ballistic.controllers;
+
+import group.goforward.ballistic.repos.PartCategoryRepository;
+import group.goforward.ballistic.web.dto.admin.PartCategoryDto;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/categories")
+@CrossOrigin // you can tighten origins later
+public class CategoryController {
+
+    private final PartCategoryRepository partCategories;
+
+    public CategoryController(PartCategoryRepository partCategories) {
+        this.partCategories = partCategories;
+    }
+
+    @GetMapping
+    public List<PartCategoryDto> list() {
+        return partCategories.findAllByOrderByGroupNameAscSortOrderAscNameAsc()
+                .stream()
+                .map(pc -> new PartCategoryDto(
+                        pc.getId(),
+                        pc.getSlug(),
+                        pc.getName(),
+                        pc.getDescription(),
+                        pc.getGroupName(),
+                        pc.getSortOrder()
+                ))
+                .toList();
+    }
+}

src/main/java/group/goforward/ballistic/controllers/StateController.java

@@ -5,7 +5,6 @@ import group.goforward.ballistic.model.State;
 import group.goforward.ballistic.repos.StateRepository;
 import group.goforward.ballistic.services.StatesService;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.cache.annotation.Cacheable;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
@@ -14,38 +13,44 @@ import java.util.List;
 
 
 @RestController
-@RequestMapping("/api/states")
+@RequestMapping()
 public class StateController {
     @Autowired
     private StateRepository repo;
     @Autowired
     private StatesService statesService;
-//@Cacheable(value="getAllStates")
-    @GetMapping("/all")
+
+    @GetMapping("/api/getAllStates")
     public ResponseEntity<List<State>> getAllStates() {
         List<State> state = repo.findAll();
         return ResponseEntity.ok(state);
     }
 
-    @GetMapping("/{id}")
+    @GetMapping("/api/getAllStatesTest")
+    public ApiResponse<List<State>> getAllStatesTest() {
+        List<State> state = repo.findAll();
+        return ApiResponse.success(state);
+    }
+
+    @GetMapping("/api/getAllStatesById/{id}")
     public ResponseEntity<State> getAllStatesById(@PathVariable Integer id) {
         return repo.findById(id)
                 .map(ResponseEntity::ok)
                 .orElse(ResponseEntity.notFound().build());
     }
-    @GetMapping("/byAbbrev/{abbreviation}")
+    @GetMapping("/api/getAllStatesByAbbreviation/{abbreviation}")
     public ResponseEntity<State> getAllStatesByAbbreviation(@PathVariable String abbreviation) {
         return repo.findByAbbreviation(abbreviation)
                 .map(ResponseEntity::ok)
                 .orElse(ResponseEntity.notFound().build());
     }
-    @PostMapping("/addState")
+    @PostMapping("/api/addState")
     public ResponseEntity<State> createState(@RequestBody State item) {
         State created = statesService.save(item);
         return ResponseEntity.status(HttpStatus.CREATED).body(created);
     }
 
-    @DeleteMapping("/deleteState/{id}")
+    @DeleteMapping("/api/deleteState/{id}")
     public ResponseEntity<Void> deleteItem(@PathVariable Integer id) {
         return statesService.findById(id)
                 .map(item -> {

src/main/java/group/goforward/ballistic/controllers/UserController.java

@@ -12,36 +12,33 @@ import java.util.List;
 
 
 @RestController
-@RequestMapping("/api/user")
+@RequestMapping()
 public class UserController {
-    private final UserRepository repo;
-    private final UsersService usersService;
+    @Autowired
+    private UserRepository repo;
+    @Autowired
+    private UsersService usersService;
 
-    public UserController(UserRepository repo, UsersService usersService) {
-        this.repo = repo;
-        this.usersService = usersService;
-    }
-
-    @GetMapping("/all")
+    @GetMapping("/api/getAllUsers")
     public ResponseEntity<List<User>> getAllUsers() {
         List<User> data = repo.findAll();
         return ResponseEntity.ok(data);
     }
 
 
-    @GetMapping("/byId/{id}")
+    @GetMapping("/api/getAllUsersById/{id}")
     public ResponseEntity<User> getAllStatesById(@PathVariable Integer id) {
         return repo.findById(id)
                 .map(ResponseEntity::ok)
                 .orElse(ResponseEntity.notFound().build());
     }
-    @PostMapping("/addUser")
+    @PostMapping("/api/addUser")
     public ResponseEntity<User> createUser(@RequestBody User item) {
         User created = usersService.save(item);
         return ResponseEntity.status(HttpStatus.CREATED).body(created);
     }
 
-    @DeleteMapping("/deleteUser/{id}")
+    @DeleteMapping("/api/deleteUser/{id}")
     public ResponseEntity<Void> deleteItem(@PathVariable Integer id) {
         return usersService.findById(id)
                 .map(item -> {

src/main/java/group/goforward/ballistic/controllers/admin/AdminCategoryController.java

@@ -0,0 +1,40 @@
+package group.goforward.ballistic.controllers.admin;
+
+import group.goforward.ballistic.model.PartCategory;
+import group.goforward.ballistic.repos.PartCategoryRepository;
+import group.goforward.ballistic.web.dto.admin.PartCategoryDto;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/admin/categories")
+@CrossOrigin
+public class AdminCategoryController {
+
+    private final PartCategoryRepository partCategories;
+
+    public AdminCategoryController(PartCategoryRepository partCategories) {
+        this.partCategories = partCategories;
+    }
+
+    @GetMapping
+    public List<PartCategoryDto> listCategories() {
+        return partCategories
+                .findAllByOrderByGroupNameAscSortOrderAscNameAsc()
+                .stream()
+                .map(this::toDto)
+                .toList();
+    }
+
+    private PartCategoryDto toDto(PartCategory entity) {
+        return new PartCategoryDto(
+                entity.getId(),
+                entity.getSlug(),
+                entity.getName(),
+                entity.getDescription(),
+                entity.getGroupName(),
+                entity.getSortOrder()
+        );
+    }
+}

src/main/java/group/goforward/ballistic/controllers/admin/AdminCategoryMappingController.java

@@ -0,0 +1,117 @@
+package group.goforward.ballistic.controllers.admin;
+
+import group.goforward.ballistic.model.CategoryMapping;
+import group.goforward.ballistic.model.Merchant;
+import group.goforward.ballistic.model.PartCategory;
+import group.goforward.ballistic.repos.CategoryMappingRepository;
+import group.goforward.ballistic.repos.MerchantRepository;
+import group.goforward.ballistic.repos.PartCategoryRepository;
+import group.goforward.ballistic.web.dto.admin.MerchantCategoryMappingDto;
+import group.goforward.ballistic.web.dto.admin.SimpleMerchantDto;
+import group.goforward.ballistic.web.dto.admin.UpdateMerchantCategoryMappingRequest;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.server.ResponseStatusException;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/admin/category-mappings")
+@CrossOrigin // you can tighten origins later
+public class AdminCategoryMappingController {
+
+    private final CategoryMappingRepository categoryMappingRepository;
+    private final MerchantRepository merchantRepository;
+    private final PartCategoryRepository partCategoryRepository;
+
+    public AdminCategoryMappingController(
+            CategoryMappingRepository categoryMappingRepository,
+            MerchantRepository merchantRepository,
+            PartCategoryRepository partCategoryRepository
+    ) {
+        this.categoryMappingRepository = categoryMappingRepository;
+        this.merchantRepository = merchantRepository;
+        this.partCategoryRepository = partCategoryRepository;
+    }
+
+    /**
+     * Merchants that have at least one category_mappings row.
+     * Used for the "All Merchants" dropdown in the UI.
+     */
+    @GetMapping("/merchants")
+    public List<SimpleMerchantDto> listMerchantsWithMappings() {
+        List<Merchant> merchants = categoryMappingRepository.findDistinctMerchantsWithMappings();
+        return merchants.stream()
+                .map(m -> new SimpleMerchantDto(m.getId(), m.getName()))
+                .toList();
+    }
+
+    /**
+     * List mappings for a specific merchant, or all mappings if no merchantId is provided.
+     * GET /api/admin/category-mappings?merchantId=1
+     */
+    @GetMapping
+    public List<MerchantCategoryMappingDto> listByMerchant(
+            @RequestParam(name = "merchantId", required = false) Integer merchantId
+    ) {
+        List<CategoryMapping> mappings;
+
+        if (merchantId != null) {
+            mappings = categoryMappingRepository.findByMerchantIdOrderByRawCategoryPathAsc(merchantId);
+        } else {
+            // fall back to all mappings; you can add a more specific repository method later if desired
+            mappings = categoryMappingRepository.findAll();
+        }
+
+        return mappings.stream()
+                .map(cm -> new MerchantCategoryMappingDto(
+                        cm.getId(),
+                        cm.getMerchant().getId(),
+                        cm.getMerchant().getName(),
+                        cm.getRawCategoryPath(),
+                        cm.getPartCategory() != null ? cm.getPartCategory().getId() : null,
+                        cm.getPartCategory() != null ? cm.getPartCategory().getName() : null
+                ))
+                .toList();
+    }
+
+    /**
+     * Update a single mapping's part_category.
+     * POST /api/admin/category-mappings/{id}
+     * Body: { "partCategoryId": 24 }
+     */
+    @PostMapping("/{id}")
+    public MerchantCategoryMappingDto updateMapping(
+            @PathVariable Integer id,
+            @RequestBody UpdateMerchantCategoryMappingRequest request
+    ) {
+        CategoryMapping mapping = categoryMappingRepository.findById(id)
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Mapping not found"));
+
+        PartCategory partCategory = null;
+        if (request.partCategoryId() != null) {
+            partCategory = partCategoryRepository.findById(request.partCategoryId())
+                    .orElseThrow(() -> new ResponseStatusException(HttpStatus.BAD_REQUEST, "Part category not found"));
+        }
+
+        mapping.setPartCategory(partCategory);
+        mapping = categoryMappingRepository.save(mapping);
+
+        return new MerchantCategoryMappingDto(
+                mapping.getId(),
+                mapping.getMerchant().getId(),
+                mapping.getMerchant().getName(),
+                mapping.getRawCategoryPath(),
+                mapping.getPartCategory() != null ? mapping.getPartCategory().getId() : null,
+                mapping.getPartCategory() != null ? mapping.getPartCategory().getName() : null
+        );
+    }
+    @PutMapping("/{id}")
+    public MerchantCategoryMappingDto updateMappingPut(
+            @PathVariable Integer id,
+            @RequestBody UpdateMerchantCategoryMappingRequest request
+    ) {
+        // just delegate so POST & PUT behave the same
+        return updateMapping(id, request);
+    }
+}

src/main/java/group/goforward/ballistic/controllers/admin/AdminPartRoleMappingController.java

@@ -0,0 +1,123 @@
+package group.goforward.ballistic.controllers.admin;
+
+import group.goforward.ballistic.model.PartCategory;
+import group.goforward.ballistic.model.PartRoleMapping;
+import group.goforward.ballistic.repos.PartCategoryRepository;
+import group.goforward.ballistic.repos.PartRoleMappingRepository;
+import group.goforward.ballistic.web.dto.admin.AdminPartRoleMappingDto;
+import group.goforward.ballistic.web.dto.admin.CreatePartRoleMappingRequest;
+import group.goforward.ballistic.web.dto.admin.UpdatePartRoleMappingRequest;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.server.ResponseStatusException;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/admin/part-role-mappings")
+@CrossOrigin
+public class AdminPartRoleMappingController {
+
+    private final PartRoleMappingRepository partRoleMappingRepository;
+    private final PartCategoryRepository partCategoryRepository;
+
+    public AdminPartRoleMappingController(
+            PartRoleMappingRepository partRoleMappingRepository,
+            PartCategoryRepository partCategoryRepository
+    ) {
+        this.partRoleMappingRepository = partRoleMappingRepository;
+        this.partCategoryRepository = partCategoryRepository;
+    }
+
+    // GET /api/admin/part-role-mappings?platform=AR-15
+    @GetMapping
+    public List<AdminPartRoleMappingDto> list(
+            @RequestParam(name = "platform", required = false) String platform
+    ) {
+        List<PartRoleMapping> mappings;
+
+        if (platform != null && !platform.isBlank()) {
+            mappings = partRoleMappingRepository.findByPlatformOrderByPartRoleAsc(platform);
+        } else {
+            mappings = partRoleMappingRepository.findAll();
+        }
+
+        return mappings.stream()
+                .map(this::toDto)
+                .toList();
+    }
+
+    // POST /api/admin/part-role-mappings
+    @PostMapping
+    public AdminPartRoleMappingDto create(
+            @RequestBody CreatePartRoleMappingRequest request
+    ) {
+        PartCategory category = partCategoryRepository.findBySlug(request.categorySlug())
+                .orElseThrow(() -> new ResponseStatusException(
+                        HttpStatus.BAD_REQUEST,
+                        "PartCategory not found for slug: " + request.categorySlug()
+                ));
+
+        PartRoleMapping mapping = new PartRoleMapping();
+        mapping.setPlatform(request.platform());
+        mapping.setPartRole(request.partRole());
+        mapping.setPartCategory(category);
+        mapping.setNotes(request.notes());
+
+        mapping = partRoleMappingRepository.save(mapping);
+        return toDto(mapping);
+    }
+
+    // PUT /api/admin/part-role-mappings/{id}
+    @PutMapping("/{id}")
+    public AdminPartRoleMappingDto update(
+            @PathVariable Integer id,
+            @RequestBody UpdatePartRoleMappingRequest request
+    ) {
+        PartRoleMapping mapping = partRoleMappingRepository.findById(id)
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Mapping not found"));
+
+        if (request.platform() != null) {
+            mapping.setPlatform(request.platform());
+        }
+        if (request.partRole() != null) {
+            mapping.setPartRole(request.partRole());
+        }
+        if (request.categorySlug() != null) {
+            PartCategory category = partCategoryRepository.findBySlug(request.categorySlug())
+                    .orElseThrow(() -> new ResponseStatusException(
+                            HttpStatus.BAD_REQUEST,
+                            "PartCategory not found for slug: " + request.categorySlug()
+                    ));
+            mapping.setPartCategory(category);
+        }
+        if (request.notes() != null) {
+            mapping.setNotes(request.notes());
+        }
+
+        mapping = partRoleMappingRepository.save(mapping);
+        return toDto(mapping);
+    }
+
+    // DELETE /api/admin/part-role-mappings/{id}
+    @DeleteMapping("/{id}")
+    @ResponseStatus(HttpStatus.NO_CONTENT)
+    public void delete(@PathVariable Integer id) {
+        if (!partRoleMappingRepository.existsById(id)) {
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Mapping not found");
+        }
+        partRoleMappingRepository.deleteById(id);
+    }
+
+    private AdminPartRoleMappingDto toDto(PartRoleMapping mapping) {
+        PartCategory cat = mapping.getPartCategory();
+        return new AdminPartRoleMappingDto(
+                mapping.getId(),
+                mapping.getPlatform(),
+                mapping.getPartRole(),
+                cat != null ? cat.getSlug() : null,
+                cat != null ? cat.getGroupName() : null,
+                mapping.getNotes()
+        );
+    }
+}

src/main/java/group/goforward/ballistic/controllers/admin/PartCategoryAdminController.java

@@ -0,0 +1,35 @@
+package group.goforward.ballistic.controllers.admin;
+
+import group.goforward.ballistic.model.PartCategory;
+import group.goforward.ballistic.repos.PartCategoryRepository;
+import group.goforward.ballistic.web.dto.admin.PartCategoryDto;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/admin/part-categories")
+@CrossOrigin // keep it loose for now, you can tighten origins later
+public class PartCategoryAdminController {
+
+    private final PartCategoryRepository partCategories;
+
+    public PartCategoryAdminController(PartCategoryRepository partCategories) {
+        this.partCategories = partCategories;
+    }
+
+    @GetMapping
+    public List<PartCategoryDto> list() {
+        return partCategories.findAllByOrderByGroupNameAscSortOrderAscNameAsc()
+                .stream()
+                .map(pc -> new PartCategoryDto(
+                        pc.getId(),
+                        pc.getSlug(),
+                        pc.getName(),
+                        pc.getDescription(),
+                        pc.getGroupName(),
+                        pc.getSortOrder()
+                ))
+                .toList();
+    }
+}

src/main/java/group/goforward/ballistic/model/AffiliateCategoryMap.java

@@ -5,23 +5,32 @@ import jakarta.persistence.*;
 @Entity
 @Table(name = "affiliate_category_map")
 public class AffiliateCategoryMap {
+
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    @Column(name = "id", nullable = false)
     private Integer id;
 
-    @Column(name = "feedname", nullable = false, length = 100)
-    private String feedname;
+    // e.g. "PART_ROLE", "RAW_CATEGORY", etc.
+    @Column(name = "source_type", nullable = false)
+    private String sourceType;
 
-    @Column(name = "affiliatecategory", nullable = false)
-    private String affiliatecategory;
+    // the value we’re mapping from (e.g. "suppressor", "TRIGGER")
+    @Column(name = "source_value", nullable = false)
+    private String sourceValue;
 
-    @Column(name = "buildercategoryid", nullable = false)
-    private Integer buildercategoryid;
+    // optional platform ("AR-15", "PRECISION", etc.)
+    @Column(name = "platform")
+    private String platform;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "part_category_id", nullable = false)
+    private PartCategory partCategory;
 
     @Column(name = "notes")
     private String notes;
 
+    // --- getters / setters ---
+
     public Integer getId() {
         return id;
     }
@@ -30,28 +39,36 @@ public class AffiliateCategoryMap {
         this.id = id;
     }
 
-    public String getFeedname() {
-        return feedname;
+    public String getSourceType() {
+        return sourceType;
     }
 
-    public void setFeedname(String feedname) {
-        this.feedname = feedname;
+    public void setSourceType(String sourceType) {
+        this.sourceType = sourceType;
     }
 
-    public String getAffiliatecategory() {
-        return affiliatecategory;
+    public String getSourceValue() {
+        return sourceValue;
     }
 
-    public void setAffiliatecategory(String affiliatecategory) {
-        this.affiliatecategory = affiliatecategory;
+    public void setSourceValue(String sourceValue) {
+        this.sourceValue = sourceValue;
     }
 
-    public Integer getBuildercategoryid() {
-        return buildercategoryid;
+    public String getPlatform() {
+        return platform;
     }
 
-    public void setBuildercategoryid(Integer buildercategoryid) {
-        this.buildercategoryid = buildercategoryid;
+    public void setPlatform(String platform) {
+        this.platform = platform;
+    }
+
+    public PartCategory getPartCategory() {
+        return partCategory;
+    }
+
+    public void setPartCategory(PartCategory partCategory) {
+        this.partCategory = partCategory;
     }
 
     public String getNotes() {
@@ -61,5 +78,4 @@ public class AffiliateCategoryMap {
     public void setNotes(String notes) {
         this.notes = notes;
     }
-
 }

src/main/java/group/goforward/ballistic/model/CategoryMapping.java

@@ -0,0 +1,98 @@
+// src/main/java/group/goforward/ballistic/model/CategoryMapping.java
+package group.goforward.ballistic.model;
+
+import jakarta.persistence.*;
+import java.time.OffsetDateTime;
+
+@Entity
+@Table(name = "category_mappings")
+public class CategoryMapping {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "id", nullable = false)
+    private Integer id;
+
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "merchant_id", nullable = false)
+    private Merchant merchant;
+
+    @Column(name = "raw_category_path", nullable = false)
+    private String rawCategoryPath;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "part_category_id")
+    private PartCategory partCategory;
+
+    @Column(name = "created_at", nullable = false)
+    private OffsetDateTime createdAt = OffsetDateTime.now();
+
+    @Column(name = "updated_at", nullable = false)
+    private OffsetDateTime updatedAt = OffsetDateTime.now();
+
+    @PrePersist
+    public void onCreate() {
+        OffsetDateTime now = OffsetDateTime.now();
+        if (createdAt == null) {
+            createdAt = now;
+        }
+        if (updatedAt == null) {
+            updatedAt = now;
+        }
+    }
+
+    @PreUpdate
+    public void onUpdate() {
+        this.updatedAt = OffsetDateTime.now();
+    }
+
+    // --- getters & setters ---
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public Merchant getMerchant() {
+        return merchant;
+    }
+
+    public void setMerchant(Merchant merchant) {
+        this.merchant = merchant;
+    }
+
+    public String getRawCategoryPath() {
+        return rawCategoryPath;
+    }
+
+    public void setRawCategoryPath(String rawCategoryPath) {
+        this.rawCategoryPath = rawCategoryPath;
+    }
+
+    public PartCategory getPartCategory() {
+        return partCategory;
+    }
+
+    public void setPartCategory(PartCategory partCategory) {
+        this.partCategory = partCategory;
+    }
+
+    public OffsetDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(OffsetDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public OffsetDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(OffsetDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+}

src/main/java/group/goforward/ballistic/model/PartCategory.java

@@ -1,24 +1,49 @@
 package group.goforward.ballistic.model;
 
 import jakarta.persistence.*;
+import org.hibernate.annotations.ColumnDefault;
+
+import java.time.OffsetDateTime;
+import java.util.UUID;
 
 @Entity
 @Table(name = "part_categories")
 public class PartCategory {
+
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     @Column(name = "id", nullable = false)
     private Integer id;
 
-    @Column(name = "slug", nullable = false, length = Integer.MAX_VALUE)
+    @Column(name = "slug", nullable = false, unique = true)
     private String slug;
 
-    @Column(name = "name", nullable = false, length = Integer.MAX_VALUE)
+    @Column(name = "name", nullable = false)
     private String name;
 
-    @Column(name = "description", length = Integer.MAX_VALUE)
+    @Column(name = "description")
     private String description;
 
+    @ColumnDefault("gen_random_uuid()")
+    @Column(name = "uuid", nullable = false)
+    private UUID uuid;
+
+    @Column(name = "group_name")
+    private String groupName;
+
+    @Column(name = "sort_order")
+    private Integer sortOrder;
+
+    @ColumnDefault("now()")
+    @Column(name = "created_at", nullable = false)
+    private OffsetDateTime createdAt;
+
+    @ColumnDefault("now()")
+    @Column(name = "updated_at", nullable = false)
+    private OffsetDateTime updatedAt;
+
+    // --- Getters & Setters ---
+
     public Integer getId() {
         return id;
     }
@@ -51,4 +76,43 @@ public class PartCategory {
         this.description = description;
     }
 
+    public UUID getUuid() {
+        return uuid;
+    }
+
+    public void setUuid(UUID uuid) {
+        this.uuid = uuid;
+    }
+
+    public String getGroupName() {
+        return groupName;
+    }
+
+    public void setGroupName(String groupName) {
+        this.groupName = groupName;
+    }
+
+    public Integer getSortOrder() {
+        return sortOrder;
+    }
+
+    public void setSortOrder(Integer sortOrder) {
+        this.sortOrder = sortOrder;
+    }
+
+    public OffsetDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(OffsetDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public OffsetDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(OffsetDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
 }

src/main/java/group/goforward/ballistic/model/PartRoleCategoryMapping.java

@@ -0,0 +1,56 @@
+package group.goforward.ballistic.model;
+
+import jakarta.persistence.*;
+import java.time.OffsetDateTime;
+
+@Entity
+@Table(name = "part_role_category_mappings",
+       uniqueConstraints = @UniqueConstraint(columnNames = {"platform", "part_role"}))
+public class PartRoleCategoryMapping {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+
+    @Column(name = "platform", nullable = false)
+    private String platform;
+
+    @Column(name = "part_role", nullable = false)
+    private String partRole;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "category_slug", referencedColumnName = "slug", nullable = false)
+    private PartCategory category;
+
+    @Column(name = "notes")
+    private String notes;
+
+    @Column(name = "created_at", nullable = false)
+    private OffsetDateTime createdAt;
+
+    @Column(name = "updated_at", nullable = false)
+    private OffsetDateTime updatedAt;
+
+    // getters/setters…
+
+    public Integer getId() { return id; }
+    public void setId(Integer id) { this.id = id; }
+
+    public String getPlatform() { return platform; }
+    public void setPlatform(String platform) { this.platform = platform; }
+
+    public String getPartRole() { return partRole; }
+    public void setPartRole(String partRole) { this.partRole = partRole; }
+
+    public PartCategory getCategory() { return category; }
+    public void setCategory(PartCategory category) { this.category = category; }
+
+    public String getNotes() { return notes; }
+    public void setNotes(String notes) { this.notes = notes; }
+
+    public OffsetDateTime getCreatedAt() { return createdAt; }
+    public void setCreatedAt(OffsetDateTime createdAt) { this.createdAt = createdAt; }
+
+    public OffsetDateTime getUpdatedAt() { return updatedAt; }
+    public void setUpdatedAt(OffsetDateTime updatedAt) { this.updatedAt = updatedAt; }
+}

src/main/java/group/goforward/ballistic/model/PartRoleMapping.java

@@ -0,0 +1,65 @@
+package group.goforward.ballistic.model;
+
+import jakarta.persistence.*;
+
+@Entity
+@Table(name = "part_role_mappings")
+public class PartRoleMapping {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+
+    @Column(nullable = false)
+    private String platform;   // e.g. "AR-15"
+
+    @Column(name = "part_role", nullable = false)
+    private String partRole;   // e.g. "UPPER", "BARREL", etc.
+
+    @ManyToOne(optional = false)
+    @JoinColumn(name = "part_category_id")
+    private PartCategory partCategory;
+
+    @Column(columnDefinition = "text")
+    private String notes;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getPlatform() {
+        return platform;
+    }
+
+    public void setPlatform(String platform) {
+        this.platform = platform;
+    }
+
+    public String getPartRole() {
+        return partRole;
+    }
+
+    public void setPartRole(String partRole) {
+        this.partRole = partRole;
+    }
+
+    public PartCategory getPartCategory() {
+        return partCategory;
+    }
+
+    public void setPartCategory(PartCategory partCategory) {
+        this.partCategory = partCategory;
+    }
+
+    public String getNotes() {
+        return notes;
+    }
+
+    public void setNotes(String notes) {
+        this.notes = notes;
+    }
+}

src/main/java/group/goforward/ballistic/model/Product.java

@@ -3,7 +3,13 @@ package group.goforward.ballistic.model;
 import jakarta.persistence.*;
 import java.time.Instant;
 import java.util.UUID;
+import java.math.BigDecimal;
+import java.util.Comparator;
+import java.util.Objects;
+import java.util.Set;
+import java.util.HashSet;
 
+import group.goforward.ballistic.model.ProductOffer;
 import group.goforward.ballistic.model.ProductConfiguration;
 
 @Entity
@@ -68,7 +74,16 @@ public class Product {
     @Column(name = "platform_locked", nullable = false)
     private Boolean platformLocked = false;
 
+    @OneToMany(mappedBy = "product", fetch = FetchType.LAZY)
+    private Set<ProductOffer> offers = new HashSet<>();
 
+    public Set<ProductOffer> getOffers() {
+        return offers;
+    }
+
+    public void setOffers(Set<ProductOffer> offers) {
+        this.offers = offers;
+    }
 
     // --- lifecycle hooks ---
 
@@ -236,4 +251,41 @@ public class Product {
     public void setConfiguration(ProductConfiguration configuration) {
         this.configuration = configuration;
     }
+    // Convenience: best offer price for Gunbuilder
+public BigDecimal getBestOfferPrice() {
+    if (offers == null || offers.isEmpty()) {
+        return BigDecimal.ZERO;
+    }
+
+    return offers.stream()
+            // pick sale_price if present, otherwise retail_price
+            .map(offer -> {
+                if (offer.getSalePrice() != null) {
+                    return offer.getSalePrice();
+                }
+                return offer.getRetailPrice();
+            })
+            .filter(Objects::nonNull)
+            .min(BigDecimal::compareTo)
+            .orElse(BigDecimal.ZERO);
+}
+
+    // Convenience: URL for the best-priced offer
+    public String getBestOfferBuyUrl() {
+        if (offers == null || offers.isEmpty()) {
+            return null;
+        }
+
+        return offers.stream()
+                .sorted(Comparator.comparing(offer -> {
+                    if (offer.getSalePrice() != null) {
+                        return offer.getSalePrice();
+                    }
+                    return offer.getRetailPrice();
+                }, Comparator.nullsLast(BigDecimal::compareTo)))
+                .map(ProductOffer::getAffiliateUrl)
+                .filter(Objects::nonNull)
+                .findFirst()
+                .orElse(null);
+    }
 }

src/main/java/group/goforward/ballistic/model/ProductOffer.java

@@ -7,11 +7,11 @@ import org.hibernate.annotations.OnDeleteAction;
 
 import java.math.BigDecimal;
 import java.time.OffsetDateTime;
-import java.util.UUID;
 
 @Entity
 @Table(name = "product_offers")
 public class ProductOffer {
+
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     @Column(name = "id", nullable = false)
@@ -26,16 +26,16 @@ public class ProductOffer {
     @JoinColumn(name = "merchant_id", nullable = false)
     private Merchant merchant;
 
-    @Column(name = "avantlink_product_id", nullable = false, length = Integer.MAX_VALUE)
+    @Column(name = "avantlink_product_id", nullable = false)
     private String avantlinkProductId;
 
-    @Column(name = "sku", length = Integer.MAX_VALUE)
+    @Column(name = "sku")
     private String sku;
 
-    @Column(name = "upc", length = Integer.MAX_VALUE)
+    @Column(name = "upc")
     private String upc;
 
-    @Column(name = "buy_url", nullable = false, length = Integer.MAX_VALUE)
+    @Column(name = "buy_url", nullable = false)
     private String buyUrl;
 
     @Column(name = "price", nullable = false, precision = 10, scale = 2)
@@ -45,7 +45,7 @@ public class ProductOffer {
     private BigDecimal originalPrice;
 
     @ColumnDefault("'USD'")
-    @Column(name = "currency", nullable = false, length = Integer.MAX_VALUE)
+    @Column(name = "currency", nullable = false)
     private String currency;
 
     @ColumnDefault("true")
@@ -60,6 +60,10 @@ public class ProductOffer {
     @Column(name = "first_seen_at", nullable = false)
     private OffsetDateTime firstSeenAt;
 
+    // -----------------------------------------------------
+    // Getters & setters
+    // -----------------------------------------------------
+
     public Integer getId() {
         return id;
     }
@@ -164,14 +168,26 @@ public class ProductOffer {
         this.firstSeenAt = firstSeenAt;
     }
 
-    public BigDecimal getEffectivePrice() {
-        // Prefer a true sale price when it's lower than the original
-        if (price != null && originalPrice != null && price.compareTo(originalPrice) < 0) {
+    // -----------------------------------------------------
+    // Helper Methods (used by Product entity)
+    // -----------------------------------------------------
+
+    public BigDecimal getSalePrice() {
         return price;
     }
 
-        // Otherwise, use whatever is available
-        return price != null ? price : originalPrice;
+    public BigDecimal getRetailPrice() {
+        return originalPrice != null ? originalPrice : price;
     }
 
+    public String getAffiliateUrl() {
+        return buyUrl;
+    }
+
+    public BigDecimal getEffectivePrice() {
+        if (price != null && originalPrice != null && price.compareTo(originalPrice) < 0) {
+            return price;
+        }
+        return price != null ? price : originalPrice;
+    }
 }

src/main/java/group/goforward/ballistic/repos/CategoryMappingRepository.java

@@ -1,7 +1,22 @@
 package group.goforward.ballistic.repos;
 
-import group.goforward.ballistic.model.AffiliateCategoryMap;
+import group.goforward.ballistic.model.CategoryMapping;
+import group.goforward.ballistic.model.Merchant;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
 
-public interface CategoryMappingRepository extends JpaRepository<AffiliateCategoryMap, Integer> {
+import java.util.List;
+
+public interface CategoryMappingRepository extends JpaRepository<CategoryMapping, Integer> {
+
+    // All mappings for a merchant, ordered nicely
+    List<CategoryMapping> findByMerchantIdOrderByRawCategoryPathAsc(Integer merchantId);
+
+    // Merchants that actually have mappings (for the dropdown)
+    @Query("""
+        select distinct cm.merchant
+        from CategoryMapping cm
+        order by cm.merchant.name asc
+    """)
+    List<Merchant> findDistinctMerchantsWithMappings();
 }

src/main/java/group/goforward/ballistic/repos/PartCategoryRepository.java

@@ -2,8 +2,13 @@ package group.goforward.ballistic.repos;
 
 import group.goforward.ballistic.model.PartCategory;
 import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
 import java.util.Optional;
 
 public interface PartCategoryRepository extends JpaRepository<PartCategory, Integer> {
+
     Optional<PartCategory> findBySlug(String slug);
+
+    List<PartCategory> findAllByOrderByGroupNameAscSortOrderAscNameAsc();
 }

src/main/java/group/goforward/ballistic/repos/PartRoleCategoryMappingRepository.java

@@ -0,0 +1,14 @@
+package group.goforward.ballistic.repos;
+
+import group.goforward.ballistic.model.PartRoleCategoryMapping;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface PartRoleCategoryMappingRepository extends JpaRepository<PartRoleCategoryMapping, Integer> {
+
+    List<PartRoleCategoryMapping> findAllByPlatformOrderByPartRoleAsc(String platform);
+
+    Optional<PartRoleCategoryMapping> findByPlatformAndPartRole(String platform, String partRole);
+}

src/main/java/group/goforward/ballistic/repos/PartRoleMappingRepository.java

@@ -0,0 +1,12 @@
+package group.goforward.ballistic.repos;
+
+import group.goforward.ballistic.model.PartRoleMapping;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface PartRoleMappingRepository extends JpaRepository<PartRoleMapping, Integer> {
+
+    // List mappings for a platform, ordered nicely for the UI
+    List<PartRoleMapping> findByPlatformOrderByPartRoleAsc(String platform);
+}

src/main/java/group/goforward/ballistic/repos/ProductRepository.java

@@ -1,33 +1,28 @@
 package group.goforward.ballistic.repos;
 
-import group.goforward.ballistic.model.Product;
 import group.goforward.ballistic.model.Brand;
+import group.goforward.ballistic.model.Product;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 
-import java.util.Optional;
-import java.util.UUID;
 import java.util.List;
-import java.util.Collection;
 
 public interface ProductRepository extends JpaRepository<Product, Integer> {
 
-    Optional<Product> findByUuid(UUID uuid);
-
-    boolean existsBySlug(String slug);
+    // -------------------------------------------------
+    // Used by MerchantFeedImportServiceImpl
+    // -------------------------------------------------
 
     List<Product> findAllByBrandAndMpn(Brand brand, String mpn);
 
     List<Product> findAllByBrandAndUpc(Brand brand, String upc);
 
-    // All products for a given platform (e.g. "AR-15")
-    List<Product> findByPlatform(String platform);
+    boolean existsBySlug(String slug);
 
-    // Products filtered by platform + part roles (e.g. upper-receiver, barrel, etc.)
-    List<Product> findByPlatformAndPartRoleIn(String platform, Collection<String> partRoles);
-
-    // ---------- Optimized variants for Gunbuilder (fetch brand to avoid N+1) ----------
+    // -------------------------------------------------
+    // Used by ProductController for platform views
+    // -------------------------------------------------
 
     @Query("""
            SELECT p
@@ -43,11 +38,25 @@ public interface ProductRepository extends JpaRepository<Product, Integer> {
            FROM Product p
            JOIN FETCH p.brand b
            WHERE p.platform = :platform
-             AND p.partRole IN :partRoles
+             AND p.partRole IN :roles
              AND p.deletedAt IS NULL
            """)
     List<Product> findByPlatformAndPartRoleInWithBrand(
             @Param("platform") String platform,
-            @Param("partRoles") Collection<String> partRoles
+            @Param("roles") List<String> roles
     );
+
+    // -------------------------------------------------
+    // Used by Gunbuilder service (if you wired this)
+    // -------------------------------------------------
+
+    @Query("""
+           SELECT DISTINCT p
+           FROM Product p
+           LEFT JOIN FETCH p.brand b
+           LEFT JOIN FETCH p.offers o
+           WHERE p.platform = :platform
+             AND p.deletedAt IS NULL
+           """)
+    List<Product> findSomethingForGunbuilder(@Param("platform") String platform);
 }

src/main/java/group/goforward/ballistic/services/BrandService.java

@@ -1,16 +0,0 @@
-package group.goforward.ballistic.services;
-
-import group.goforward.ballistic.model.Brand;
-
-import java.util.List;
-import java.util.Optional;
-
-public interface BrandService {
-
-    List<Brand> findAll();
-
-    Optional<Brand> findById(Integer id);
-
-    Brand save(Brand item);
-    void deleteById(Integer id);
-}

src/main/java/group/goforward/ballistic/services/GunbuilderProductService.java

@@ -0,0 +1,57 @@
+package group.goforward.ballistic.services;
+
+import group.goforward.ballistic.model.PartCategory;
+import group.goforward.ballistic.model.Product;
+import group.goforward.ballistic.repos.ProductRepository;
+import group.goforward.ballistic.web.dto.GunbuilderProductDto;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class GunbuilderProductService {
+
+    private final ProductRepository productRepository;
+    private final PartCategoryResolverService partCategoryResolverService;
+
+    public GunbuilderProductService(
+            ProductRepository productRepository,
+            PartCategoryResolverService partCategoryResolverService
+    ) {
+        this.productRepository = productRepository;
+        this.partCategoryResolverService = partCategoryResolverService;
+    }
+
+    public List<GunbuilderProductDto> listGunbuilderProducts(String platform) {
+
+        List<Product> products = productRepository.findSomethingForGunbuilder(platform);
+
+        return products.stream()
+                .map(p -> {
+                    var maybeCategory = partCategoryResolverService
+                            .resolveForPlatformAndPartRole(platform, p.getPartRole());
+
+                    if (maybeCategory.isEmpty()) {
+                        // you can also log here
+                        return null;
+                    }
+
+                    PartCategory cat = maybeCategory.get();
+
+                    return new GunbuilderProductDto(
+                            p.getId(),
+                            p.getName(),
+                            p.getBrand().getName(),
+                            platform,
+                            p.getPartRole(),
+                            p.getBestOfferPrice(),
+                            p.getMainImageUrl(),
+                            p.getBestOfferBuyUrl(),
+                            cat.getSlug(),
+                            cat.getGroupName()
+                    );
+                })
+                .filter(dto -> dto != null)
+                .toList();
+    }
+}

src/main/java/group/goforward/ballistic/services/PartCategoryResolverService.java

@@ -0,0 +1,41 @@
+package group.goforward.ballistic.services;
+
+import group.goforward.ballistic.model.PartCategory;
+import group.goforward.ballistic.repos.PartCategoryRepository;
+import org.springframework.stereotype.Service;
+
+import java.util.Optional;
+
+@Service
+public class PartCategoryResolverService {
+
+    private final PartCategoryRepository partCategoryRepository;
+
+    public PartCategoryResolverService(PartCategoryRepository partCategoryRepository) {
+        this.partCategoryRepository = partCategoryRepository;
+    }
+
+    /**
+     * Resolve the canonical PartCategory for a given platform + partRole.
+     *
+     * For now we keep it simple:
+     * - We treat partRole as the slug (e.g. "barrel", "upper", "trigger").
+     * - Normalize to lower-kebab (spaces -> dashes, lowercased).
+     * - Look up by slug in part_categories.
+     *
+     * Later, if we want per-merchant / per-platform overrides using category_mappings,
+     * we can extend this method without changing callers.
+     */
+    public Optional<PartCategory> resolveForPlatformAndPartRole(String platform, String partRole) {
+        if (partRole == null || partRole.isBlank()) {
+            return Optional.empty();
+        }
+
+        String normalizedSlug = partRole
+                .trim()
+                .toLowerCase()
+                .replace(" ", "-");
+
+        return partCategoryRepository.findBySlug(normalizedSlug);
+    }
+}

src/main/java/group/goforward/ballistic/services/impl/BrandServiceImpl.java

@@ -1,38 +0,0 @@
-package group.goforward.ballistic.services.impl;
-
-
-import group.goforward.ballistic.model.Brand;
-import group.goforward.ballistic.repos.BrandRepository;
-import group.goforward.ballistic.services.BrandService;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-
-import java.util.List;
-import java.util.Optional;
-
-@Service
-public class BrandServiceImpl implements BrandService {
-
-    @Autowired
-    private BrandRepository repo;
-
-    @Override
-    public List<Brand> findAll() {
-        return repo.findAll();
-    }
-
-    @Override
-    public Optional<Brand> findById(Integer id) {
-        return repo.findById(id);
-    }
-
-    @Override
-    public Brand save(Brand item) {
-        return null;
-    }
-
-    @Override
-    public void deleteById(Integer id) {
-        deleteById(id);
-    }
-}

src/main/java/group/goforward/ballistic/web/dto/GunbuilderProductDto.java

@@ -0,0 +1,53 @@
+package group.goforward.ballistic.web.dto;
+
+import java.math.BigDecimal;
+
+public class GunbuilderProductDto {
+
+    private Integer id;
+    private String name;
+    private String brand;
+    private String platform;
+    private String partRole;
+    private BigDecimal price;
+    private String imageUrl;
+    private String buyUrl;
+    private String categorySlug;
+    private String categoryGroup;
+
+    public GunbuilderProductDto(
+            Integer id,
+            String name,
+            String brand,
+            String platform,
+            String partRole,
+            BigDecimal price,
+            String imageUrl,
+            String buyUrl,
+            String categorySlug,
+            String categoryGroup
+    ) {
+        this.id = id;
+        this.name = name;
+        this.brand = brand;
+        this.platform = platform;
+        this.partRole = partRole;
+        this.price = price;
+        this.imageUrl = imageUrl;
+        this.buyUrl = buyUrl;
+        this.categorySlug = categorySlug;
+        this.categoryGroup = categoryGroup;
+    }
+
+    // --- Getters only (DTOs are read-only in most cases) ---
+    public Integer getId() { return id; }
+    public String getName() { return name; }
+    public String getBrand() { return brand; }
+    public String getPlatform() { return platform; }
+    public String getPartRole() { return partRole; }
+    public BigDecimal getPrice() { return price; }
+    public String getImageUrl() { return imageUrl; }
+    public String getBuyUrl() { return buyUrl; }
+    public String getCategorySlug() { return categorySlug; }
+    public String getCategoryGroup() { return categoryGroup; }
+}

src/main/java/group/goforward/ballistic/web/dto/admin/AdminPartRoleMappingDto.java

@@ -0,0 +1,10 @@
+package group.goforward.ballistic.web.dto.admin;
+
+public record AdminPartRoleMappingDto(
+        Integer id,
+        String platform,
+        String partRole,
+        String categorySlug,
+        String groupName,
+        String notes
+) {}

src/main/java/group/goforward/ballistic/web/dto/admin/CreatePartRoleMappingRequest.java

@@ -0,0 +1,8 @@
+package group.goforward.ballistic.web.dto.admin;
+
+public record CreatePartRoleMappingRequest(
+        String platform,
+        String partRole,
+        String categorySlug,
+        String notes
+) {}

src/main/java/group/goforward/ballistic/web/dto/admin/MerchantCategoryMappingDto.java

@@ -0,0 +1,11 @@
+// src/main/java/group/goforward/ballistic/web/dto/admin/MerchantCategoryMappingDto.java
+package group.goforward.ballistic.web.dto.admin;
+
+public record MerchantCategoryMappingDto(
+        Integer id,
+        Integer merchantId,
+        String merchantName,
+        String rawCategoryPath,
+        Integer partCategoryId,
+        String partCategoryName
+) {}

src/main/java/group/goforward/ballistic/web/dto/admin/PartCategoryDto.java

@@ -0,0 +1,10 @@
+package group.goforward.ballistic.web.dto.admin;
+
+public record PartCategoryDto(
+        Integer id,
+        String slug,
+        String name,
+        String description,
+        String groupName,
+        Integer sortOrder
+) {}

src/main/java/group/goforward/ballistic/web/dto/admin/PartRoleMappingDto.java

@@ -0,0 +1,10 @@
+package group.goforward.ballistic.web.dto.admin;
+
+public record PartRoleMappingDto(
+        Integer id,
+        String platform,
+        String partRole,
+        String categorySlug,
+        String groupName,
+        String notes
+) {}

src/main/java/group/goforward/ballistic/web/dto/admin/PartRoleMappingRequest.java

@@ -0,0 +1,8 @@
+package group.goforward.ballistic.web.dto.admin;
+
+public record PartRoleMappingRequest(
+        String platform,
+        String partRole,
+        String categorySlug,
+        String notes
+) {}

src/main/java/group/goforward/ballistic/web/dto/admin/SimpleMerchantDto.java

@@ -0,0 +1,6 @@
+package group.goforward.ballistic.web.dto.admin;
+
+public record SimpleMerchantDto(
+        Integer id,
+        String name
+) { }

src/main/java/group/goforward/ballistic/web/dto/admin/UpdateMerchantCategoryMappingRequest.java

@@ -0,0 +1,5 @@
+package group.goforward.ballistic.web.dto.admin;
+
+public record UpdateMerchantCategoryMappingRequest(
+        Integer partCategoryId
+) {}

src/main/java/group/goforward/ballistic/web/dto/admin/UpdatePartRoleMappingRequest.java

@@ -0,0 +1,8 @@
+package group.goforward.ballistic.web.dto.admin;
+
+public record UpdatePartRoleMappingRequest(
+        String platform,
+        String partRole,
+        String categorySlug,
+        String notes
+) {}