diff --git a/dict/tags.json b/dict/tags.json
index 350f719..9ca71a7 100644
--- a/dict/tags.json
+++ b/dict/tags.json
@@ -2,18 +2,59 @@
   "version": 4,
   "description": "标签词典 v4 — 全量 keymap + stopwords（人物规则已融入 keymap）",
   "metadata": {
-    "style": { "label": "风格", "color_bg": "#f0f9ff", "color_fg": "#0284c7" },
-    "outfit": { "label": "服装", "color_bg": "#fdf2f8", "color_fg": "#db2777" },
-    "scene": { "label": "场景", "color_bg": "#f0fdf4", "color_fg": "#15803d" },
-    "body": { "label": "身体", "color_bg": "#fef3c7", "color_fg": "#b45309" },
-    "mood": { "label": "情绪", "color_bg": "#faf5ff", "color_fg": "#7c3aed" },
-    "topic": { "label": "主题", "color_bg": "#f0f9ff", "color_fg": "#0369a1" },
-    "position": { "label": "姿势", "color_bg": "#fefce8", "color_fg": "#a16207" },
-    "location": { "label": "地点", "color_bg": "#f0fdfa", "color_fg": "#0f766e" },
-    "brand": { "label": "品牌/工作室", "color_bg": "#fff7ed", "color_fg": "#c2410c" },
-    "person": { "label": "人物", "color_bg": "#ecfdf5", "color_fg": "#059669" }
+    "style": {
+      "label": "风格",
+      "color_bg": "#f0f9ff",
+      "color_fg": "#0284c7"
+    },
+    "outfit": {
+      "label": "服装",
+      "color_bg": "#fdf2f8",
+      "color_fg": "#db2777"
+    },
+    "scene": {
+      "label": "场景",
+      "color_bg": "#f0fdf4",
+      "color_fg": "#15803d"
+    },
+    "body": {
+      "label": "身体",
+      "color_bg": "#fef3c7",
+      "color_fg": "#b45309"
+    },
+    "mood": {
+      "label": "情绪",
+      "color_bg": "#faf5ff",
+      "color_fg": "#7c3aed"
+    },
+    "topic": {
+      "label": "主题",
+      "color_bg": "#f0f9ff",
+      "color_fg": "#0369a1"
+    },
+    "position": {
+      "label": "姿势",
+      "color_bg": "#fefce8",
+      "color_fg": "#a16207"
+    },
+    "location": {
+      "label": "地点",
+      "color_bg": "#f0fdfa",
+      "color_fg": "#0f766e"
+    },
+    "brand": {
+      "label": "品牌/工作室",
+      "color_bg": "#fff7ed",
+      "color_fg": "#c2410c"
+    },
+    "person": {
+      "label": "人物",
+      "color_bg": "#ecfdf5",
+      "color_fg": "#059669"
+    }
   },
   "keymap": {
+    "嫩模": "topic",
     "108TV": "brand",
     "108酱": "brand",
     "Adidas": "brand",
@@ -294,23 +335,13 @@
     "waist": "body",
     "skin": "body",
     "tattoo": "body",
-    "清纯": "mood",
     "诱惑": "mood",
     "唯美": "mood",
-    "清新": "mood",
-    "冷艳": "mood",
-    "妩媚": "mood",
     "娇羞": "mood",
-    "俏皮": "mood",
-    "温柔": "mood",
-    "野性": "mood",
     "冷傲": "mood",
     "热情": "mood",
     "慵懒": "mood",
     "迷离": "mood",
-    "甜美": "mood",
-    "知性": "mood",
-    "可爱": "mood",
     "神秘": "mood",
     "忧郁": "mood",
     "伤感": "mood",
@@ -327,15 +358,9 @@
     "天真": "mood",
     "无辜": "mood",
     "纯真": "mood",
-    "pure": "mood",
-    "sweet": "mood",
-    "fresh": "mood",
-    "elegant": "mood",
-    "cute": "mood",
-    "wild": "mood",
     "lazy": "mood",
-    "sweet": "mood",
     "写真": "topic",
+    "cos": "topic",
     "私房": "topic",
     "街拍": "topic",
     "旅拍": "topic",
@@ -537,25 +562,98 @@
     "熊吖": "person"
   },
   "stop_words": [
-    "photos", "photo", "pictures", "picture", "images", "image",
-    "video", "videos", "cosplay", "cos",
-    "and", "the", "of", "in", "a", "an", "is", "to", "for",
-    "part", "vol", "collection", "special", "extra", "bonus",
-    "new", "old", "selfie", "official", "original",
-    "set", "gallery", "album", "page", "issue",
-    "model", "idol", "star", "actor", "actress", "singer",
-    "秀人", "网", "图", "套", "合集", "系列", "作品",
-    "美女", "模特", "女神", "小姐姐", "高清", "原版", "无水印",
-    "番号", "编号", "with", "without", "preview", "patreon",
-    "no", "site", "web", "online", "digital", "exclusive", "premium",
-    "classic", "photography", "shoot", "shot",
-    "xxx", "com", "www", "https", "http",
-    "Impact", "写真",  "系列"
-   
+    "photos",
+    "photo",
+    "pictures",
+    "picture",
+    "images",
+    "image",
+    "video",
+    "videos",
+    "cos",
+    "and",
+    "the",
+    "of",
+    "in",
+    "a",
+    "an",
+    "is",
+    "to",
+    "for",
+    "part",
+    "vol",
+    "collection",
+    "special",
+    "extra",
+    "bonus",
+    "new",
+    "old",
+    "selfie",
+    "official",
+    "original",
+    "set",
+    "gallery",
+    "album",
+    "page",
+    "issue",
+    "model",
+    "idol",
+    "star",
+    "actor",
+    "actress",
+    "singer",
+    "网",
+    "新人",
+    "图",
+    "套",
+    "合集",
+    "系列",
+    "作品",
+    "高清",
+    "原版",
+    "无水印",
+    "番号",
+    "编号",
+    "with",
+    "without",
+    "preview",
+    "patreon",
+    "no",
+    "site",
+    "web",
+    "online",
+    "digital",
+    "exclusive",
+    "premium",
+    "classic",
+    "photography",
+    "shoot",
+    "shot",
+    "xxx",
+    "com",
+    "www",
+    "https",
+    "http",
+    "Impact",
+    "写真",
+    "系列"
   ],
   "person_prefixes": [
-    "美女模特", "性感女神", "清纯美女", "气质美女", "可爱女孩",
-    "甜美少女", "时尚达人", "女神", "美女", "模特", "小姐姐",
-    "小仙女", "御姐", "萝莉", "辣妹", "潮人"
+    "美女模特",
+    "性感女神",
+    "清纯美女",
+    "气质美女",
+    "可爱女孩",
+    "甜美少女",
+    "时尚达人",
+    "女神",
+    "美女",
+    "模特",
+    "小姐姐",
+    "小仙女",
+    "御姐",
+    "萝莉",
+    "辣妹",
+    "潮人"
   ]
 }
diff --git a/src/db/metadata.rs b/src/db/metadata.rs
index 62a9b3a..28f9506 100644
--- a/src/db/metadata.rs
+++ b/src/db/metadata.rs
@@ -314,6 +314,8 @@ impl Database {
 
     /// 把 src_id 的所有相册关联、别名移动到 dst_id，然后删除 src_id
     pub async fn merge_person_into(&self, src_id: i64, dst_id: i64) {
+        let _guard = self.write_lock.lock().await;
+
         // 整个合并过程是一个原子操作，用事务包裹避免逐条 autocommit
         let mut tx = match self.pool.begin().await {
             Ok(t) => t,
@@ -328,9 +330,9 @@ impl Database {
         sqlx::query("INSERT OR IGNORE INTO person_aliases (person_id, alias_type, alias_name) SELECT ?, alias_type, alias_name FROM person_aliases WHERE person_id = ?")
             .bind(dst_id).bind(src_id).execute(tx.deref_mut()).await.ok();
 
-        // 3. 把 src 的原名也作为别名加入 dst
+        // 3. 把 src 的原名也作为别名加入 dst（使用事务连接，避免额外占用连接池）
         if let Some(r) = sqlx::query("SELECT id, name, display_name FROM persons WHERE id = ?")
-            .bind(src_id).fetch_optional(&self.pool).await.ok().flatten()
+            .bind(src_id).fetch_optional(tx.deref_mut()).await.ok().flatten()
         {
             let src_name: String = r.get("name");
             let src_display: Option<String> = r.get("display_name");