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>

.gitignore

@@ -0,0 +1,15 @@
+# IDE
+.idea/
+*.iml
+
+# Build output
+target/
+build/
+dist/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# WeChat
+miniapp/project.private.config.json