fix: 修复 VoiceController Map.of 兼容性 + ExploreController 参数不匹配

- VoiceController: Map.of() -> Collections.singletonMap() 兼容 Java 8
- ExploreController: 补齐 takeoutService.roll() 缺失的 taste/priceRange/allergies 参数

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/src/main/java/com/chowbox/controller/FridgeController.java

@@ -0,0 +1,52 @@
+package com.chowbox.controller;
+
+import com.chowbox.model.ApiResponse;
+import com.chowbox.model.FridgeMatchResult;
+import com.chowbox.service.FridgeService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+@Slf4j
+@RestController
+@RequestMapping("/api/fridge")
+public class FridgeController {
+
+    @Autowired
+    private FridgeService fridgeService;
+
+    @PostMapping("/match")
+    public ApiResponse<List<FridgeMatchResult>> match(@RequestBody Map<String, Object> body) {
+        Object ingObj = body.get("ingredients");
+        log.info("Fridge match request: ingredients type={}, value={}", ingObj != null ? ingObj.getClass().getSimpleName() : "null", ingObj);
+
+        List<String> ingredients = new ArrayList<>();
+        if (ingObj instanceof List) {
+            for (Object item : (List<?>) ingObj) {
+                if (item != null) ingredients.add(item.toString());
+            }
+        }
+
+        if (ingredients.isEmpty()) {
+            return ApiResponse.fail(400, "请输入至少一种食材");
+        }
+
+        // 接收前端自定义常备调料
+        List<String> staples = new ArrayList<>();
+        Object stapleObj = body.get("staples");
+        if (stapleObj instanceof List) {
+            for (Object item : (List<?>) stapleObj) {
+                if (item != null) staples.add(item.toString());
+            }
+        }
+
+        log.info("Fridge match: parsed ingredients={}, staples={}", ingredients, staples);
+        List<FridgeMatchResult> results = fridgeService.matchRecipes(ingredients, staples);
+        log.info("Fridge match: {} results", results.size());
+        return ApiResponse.ok(results);
+    }
+}