검색/필터 UI 개선, 채널 정렬, 드래그 스크롤, 지도링크 수정

- 검색바: 아이콘 내장, 모드 select 제거 (hybrid 고정), 엔터 검색
- 필터 그룹화: [음식 장르·가격] [지역 나라·시·구] + X 해제 버튼
- 채널 필터: 드롭다운 → 유튜브 아이콘 토글 카드, 드래그 스크롤
- 채널 정렬: sort_order 컬럼 추가, 백오피스 순서 편집
- 채널+필터 동시 적용: API 호출 대신 클라이언트 필터링
- 내위치 ON 시 다른 필터 초기화, 역방향도 동일
- 전체보기 버튼: 모든 필터 일괄 해제
- 네이버맵: 한국 식당만, 식당명만 검색
- 구글맵: 식당명+주소/지역 검색
- 로그인 영역 데스크톱 Row 1 우측 배치
- scrollbar-hide CSS 추가

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

backend-java/src/main/java/com/tasteby/controller/ChannelController.java

@@ -77,9 +77,10 @@ public class ChannelController {
     }
 
     @PutMapping("/{id}")
-    public Map<String, Object> update(@PathVariable String id, @RequestBody Map<String, String> body) {
+    public Map<String, Object> update(@PathVariable String id, @RequestBody Map<String, Object> body) {
         AuthUtil.requireAdmin();
-        channelService.update(id, body.get("description"), body.get("tags"));
+        Integer sortOrder = body.get("sort_order") != null ? ((Number) body.get("sort_order")).intValue() : null;
+        channelService.update(id, (String) body.get("description"), (String) body.get("tags"), sortOrder);
         cache.flush();
         return Map.of("ok", true);
     }

backend-java/src/main/java/com/tasteby/domain/Channel.java

@@ -16,6 +16,7 @@ public class Channel {
     private String titleFilter;
     private String description;
     private String tags;
+    private Integer sortOrder;
     private int videoCount;
     private String lastVideoAt;
 }

backend-java/src/main/java/com/tasteby/mapper/ChannelMapper.java

@@ -22,7 +22,8 @@ public interface ChannelMapper {
 
     Channel findByChannelId(@Param("channelId") String channelId);
 
-    void updateDescriptionTags(@Param("id") String id,
-                                @Param("description") String description,
-                                @Param("tags") String tags);
+    void updateChannel(@Param("id") String id,
+                       @Param("description") String description,
+                       @Param("tags") String tags,
+                       @Param("sortOrder") Integer sortOrder);
 }

backend-java/src/main/java/com/tasteby/service/ChannelService.java

@@ -39,7 +39,7 @@ public class ChannelService {
         return mapper.findByChannelId(channelId);
     }
 
-    public void update(String id, String description, String tags) {
-        mapper.updateDescriptionTags(id, description, tags);
+    public void update(String id, String description, String tags, Integer sortOrder) {
+        mapper.updateChannel(id, description, tags, sortOrder);
     }
 }

backend-java/src/main/resources/mybatis/mapper/ChannelMapper.xml

@@ -9,17 +9,18 @@
         <result property="titleFilter" column="title_filter"/>
         <result property="description" column="description"/>
         <result property="tags" column="tags"/>
+        <result property="sortOrder" column="sort_order"/>
         <result property="videoCount" column="video_count"/>
         <result property="lastVideoAt" column="last_video_at"/>
     </resultMap>
 
     <select id="findAllActive" resultMap="channelResultMap">
-        SELECT c.id, c.channel_id, c.channel_name, c.title_filter, c.description, c.tags,
+        SELECT c.id, c.channel_id, c.channel_name, c.title_filter, c.description, c.tags, c.sort_order,
                (SELECT COUNT(*) FROM videos v WHERE v.channel_id = c.id) AS video_count,
                (SELECT MAX(v.published_at) FROM videos v WHERE v.channel_id = c.id) AS last_video_at
         FROM channels c
         WHERE c.is_active = 1
-        ORDER BY c.channel_name
+        ORDER BY c.sort_order, c.channel_name
     </select>
 
     <insert id="insert">
@@ -37,8 +38,8 @@
         WHERE id = #{id} AND is_active = 1
     </update>
 
-    <update id="updateDescriptionTags">
-        UPDATE channels SET description = #{description}, tags = #{tags}
+    <update id="updateChannel">
+        UPDATE channels SET description = #{description}, tags = #{tags}, sort_order = #{sortOrder}
         WHERE id = #{id}
     </update>