feat(travel): 앨범 지역 편집 UI — 텍스트 입력 + 자동완성

- AlbumDetail 헤더의 지역 라벨 클릭 → 인라인 편집 모드
- 기존 지역 목록 자동완성 제안 + 새 지역명 직접 입력 가능
- Enter/클릭으로 저장, Esc/✕로 취소
- PUT /api/travel/albums/{album}/region 호출 → 앨범 목록 갱신

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

src/pages/travel/AlbumDetail.css

@@ -85,6 +85,111 @@
   width: fit-content;
 }
 
+.album-detail__region--editable {
+  border: 1px solid transparent;
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  transition: border-color 0.2s, background 0.2s;
+}
+.album-detail__region--editable:hover {
+  border-color: var(--tv-line-bright, rgba(232, 221, 208, 0.22));
+  background: var(--tv-surface-2, #221c14);
+}
+
+.album-detail__region-edit-icon {
+  opacity: 0;
+  transition: opacity 0.2s;
+}
+.album-detail__region--editable:hover .album-detail__region-edit-icon {
+  opacity: 0.6;
+}
+
+.album-detail__region-ok {
+  color: #c8905e;
+}
+.album-detail__region-err {
+  color: #dc5050;
+}
+
+/* ── Region editor ── */
+.album-detail__region-editor {
+  position: relative;
+  display: flex;
+  align-items: center;
+  gap: 4px;
+}
+
+.album-detail__region-input {
+  font-family: var(--tv-mono, 'SF Mono', 'Fira Code', monospace);
+  font-size: 11px;
+  letter-spacing: 0.04em;
+  color: var(--tv-text, #e8ddd0);
+  background: var(--tv-surface-2, #221c14);
+  border: 1px solid var(--tv-line-bright, rgba(232, 221, 208, 0.22));
+  border-radius: 4px;
+  padding: 4px 8px;
+  width: 160px;
+  outline: none;
+}
+.album-detail__region-input:focus {
+  border-color: var(--tv-accent, #c8905e);
+}
+
+.album-detail__region-suggestions {
+  position: absolute;
+  top: 100%;
+  left: 0;
+  z-index: 10;
+  margin: 4px 0 0;
+  padding: 4px 0;
+  list-style: none;
+  background: var(--tv-surface, #1a1510);
+  border: 1px solid var(--tv-line-bright, rgba(232, 221, 208, 0.22));
+  border-radius: 6px;
+  max-height: 180px;
+  overflow-y: auto;
+  min-width: 160px;
+  scrollbar-width: thin;
+}
+
+.album-detail__region-suggestion {
+  display: block;
+  width: 100%;
+  padding: 6px 12px;
+  font-family: var(--tv-mono, 'SF Mono', 'Fira Code', monospace);
+  font-size: 11px;
+  color: var(--tv-text, #e8ddd0);
+  background: none;
+  border: none;
+  cursor: pointer;
+  text-align: left;
+  transition: background 0.15s;
+}
+.album-detail__region-suggestion:hover {
+  background: var(--tv-line, rgba(232, 221, 208, 0.1));
+}
+
+.album-detail__region-cancel {
+  width: 22px;
+  height: 22px;
+  border-radius: 50%;
+  border: none;
+  background: var(--tv-line, rgba(232, 221, 208, 0.1));
+  color: var(--tv-muted, rgba(232, 221, 208, 0.45));
+  font-size: 10px;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+  transition: background 0.15s;
+}
+.album-detail__region-cancel:hover {
+  background: var(--tv-line-bright, rgba(232, 221, 208, 0.22));
+}
+
 .album-detail__count {
   font-family: var(--tv-mono, 'SF Mono', 'Fira Code', monospace);
   font-size: 11px;

src/pages/travel/AlbumDetail.jsx

@@ -1,4 +1,4 @@
-import React, { useState, useEffect, useCallback, useRef } from 'react';
+import React, { useState, useEffect, useCallback, useRef, useMemo } from 'react';
 import SwipeableView from '../../components/SwipeableView';
 import PullToRefresh from '../../components/PullToRefresh';
 import MasonryGrid from './MasonryGrid';
@@ -30,6 +30,7 @@ export default function AlbumDetail({
   onLoadMore,
   onReload,
   onCoverChange,
+  regions,
 }) {
   const isMobile = useIsMobile();
 
@@ -39,6 +40,79 @@ export default function AlbumDetail({
   const [lightboxRect, setLightboxRect] = useState(null);
   const closingRef = useRef(false);
 
+  /* ── Region editing ── */
+  const [editingRegion, setEditingRegion] = useState(false);
+  const [regionInput, setRegionInput] = useState('');
+  const [regionSaving, setRegionSaving] = useState(false);
+  const [regionMsg, setRegionMsg] = useState(null); // { type: 'ok'|'err', text }
+  const regionInputRef = useRef(null);
+  const regionMsgTimer = useRef(null);
+
+  const regionNames = useMemo(() => {
+    if (!regions?.features) return [];
+    return regions.features
+      .map((f) => f.properties?.name || f.properties?.id || '')
+      .filter(Boolean);
+  }, [regions]);
+
+  const filteredSuggestions = useMemo(() => {
+    if (!regionInput.trim()) return regionNames;
+    const q = regionInput.toLowerCase();
+    return regionNames.filter((n) => n.toLowerCase().includes(q));
+  }, [regionInput, regionNames]);
+
+  const handleRegionEditStart = useCallback(() => {
+    setEditingRegion(true);
+    setRegionInput(album?.regionName || '');
+    setRegionMsg(null);
+    setTimeout(() => regionInputRef.current?.focus(), 50);
+  }, [album]);
+
+  const handleRegionEditCancel = useCallback(() => {
+    setEditingRegion(false);
+    setRegionInput('');
+    setRegionMsg(null);
+  }, []);
+
+  const handleRegionSave = useCallback(async (value) => {
+    const name = (value ?? regionInput).trim();
+    if (!name || !album?.name) return;
+    if (name === album.regionName) {
+      setEditingRegion(false);
+      return;
+    }
+    setRegionSaving(true);
+    try {
+      const res = await fetch(
+        `/api/travel/albums/${encodeURIComponent(album.name)}/region`,
+        {
+          method: 'PUT',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ region: name }),
+        },
+      );
+      if (!res.ok) throw new Error(`${res.status}`);
+      setRegionMsg({ type: 'ok', text: `→ ${name}` });
+      setEditingRegion(false);
+      onCoverChange?.(); // refresh album list
+    } catch {
+      setRegionMsg({ type: 'err', text: '변경 실패' });
+    } finally {
+      setRegionSaving(false);
+    }
+    if (regionMsgTimer.current) clearTimeout(regionMsgTimer.current);
+    regionMsgTimer.current = setTimeout(() => setRegionMsg(null), 3000);
+  }, [regionInput, album, onCoverChange]);
+
+  const handleRegionKeyDown = useCallback((e) => {
+    if (e.key === 'Enter') {
+      e.preventDefault();
+      handleRegionSave();
+    } else if (e.key === 'Escape') {
+      handleRegionEditCancel();
+    }
+  }, [handleRegionSave, handleRegionEditCancel]);
+
   // Enter → open
   useEffect(() => {
     if (prefersReduced()) {
@@ -62,13 +136,13 @@ export default function AlbumDetail({
   /* ── ESC key (close album when lightbox not open) ── */
   useEffect(() => {
     const handler = (e) => {
-      if (e.key === 'Escape' && selectedPhotoIndex == null) {
+      if (e.key === 'Escape' && selectedPhotoIndex == null && !editingRegion) {
         handleClose();
       }
     };
     window.addEventListener('keydown', handler);
     return () => window.removeEventListener('keydown', handler);
-  }, [selectedPhotoIndex]); // eslint-disable-line react-hooks/exhaustive-deps
+  }, [selectedPhotoIndex, editingRegion]); // eslint-disable-line react-hooks/exhaustive-deps
 
   /* ── Close with exit animation ── */
   const handleClose = useCallback(() => {
@@ -183,8 +257,57 @@ export default function AlbumDetail({
 
           <div className="album-detail__title-group">
             <span className="album-detail__name">{album?.name || ''}</span>
-            {album?.regionName && (
-              <span className="album-detail__region">{album.regionName}</span>
+
+            {/* Region label / editor */}
+            {editingRegion ? (
+              <div className="album-detail__region-editor">
+                <input
+                  ref={regionInputRef}
+                  className="album-detail__region-input"
+                  type="text"
+                  value={regionInput}
+                  onChange={(e) => setRegionInput(e.target.value)}
+                  onKeyDown={handleRegionKeyDown}
+                  placeholder="지역명 입력…"
+                  disabled={regionSaving}
+                />
+                {filteredSuggestions.length > 0 && (
+                  <ul className="album-detail__region-suggestions">
+                    {filteredSuggestions.map((name) => (
+                      <li key={name}>
+                        <button
+                          className="album-detail__region-suggestion"
+                          onMouseDown={(e) => e.preventDefault()}
+                          onClick={() => handleRegionSave(name)}
+                        >
+                          {name}
+                        </button>
+                      </li>
+                    ))}
+                  </ul>
+                )}
+                <button
+                  className="album-detail__region-cancel"
+                  onClick={handleRegionEditCancel}
+                  aria-label="취소"
+                >
+                  ✕
+                </button>
+              </div>
+            ) : (
+              <button
+                className="album-detail__region album-detail__region--editable"
+                onClick={handleRegionEditStart}
+                title="클릭하여 지역 변경"
+              >
+                {regionMsg
+                  ? <span className={regionMsg.type === 'ok' ? 'album-detail__region-ok' : 'album-detail__region-err'}>{regionMsg.text}</span>
+                  : (album?.regionName || '미분류')
+                }
+                <svg className="album-detail__region-edit-icon" width="10" height="10" viewBox="0 0 10 10" fill="none">
+                  <path d="M7.5 1.5l1 1-5.5 5.5H2V7z" stroke="currentColor" strokeWidth="0.8" strokeLinejoin="round"/>
+                </svg>
+              </button>
             )}
           </div>
 

src/pages/travel/Travel.jsx

@@ -222,6 +222,7 @@ const Travel = () => {
                     onLoadMore={handleLoadMore}
                     onReload={handleReload}
                     onCoverChange={refreshAlbums}
+                    regions={regions}
                 />
             )}
         </div>