feat: 英文名自动Title Case + 自动翻译未翻译配方

- 所有 en_name 写入时自动 Title Case（pain relief → Pain Relief）
- 新建/采纳配方到公共库时自动生成英文名
- 启动时自动补全未翻译的配方英文名
- 新增 translate.py 关键词翻译字典（100+ 中医/美容/精油词条）

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/main.py

@@ -6,12 +6,18 @@ import json
 import os
 
 from backend.database import get_db, init_db, seed_defaults, log_audit
+from backend.translate import auto_translate
 import hashlib
 import secrets as _secrets
 
 app = FastAPI(title="Essential Oil Formula Calculator API")
 
 
+def title_case(s: str) -> str:
+    """Convert to title case: 'pain relief' → 'Pain Relief'"""
+    return s.strip().title() if s else s
+
+
 # ── Password hashing (PBKDF2-SHA256, stdlib) ─────────
 def hash_password(password: str) -> str:
     salt = _secrets.token_hex(16)
@@ -693,7 +699,7 @@ def upsert_oil(oil: OilIn, user=Depends(require_role("admin", "senior_editor")))
         "ON CONFLICT(name) DO UPDATE SET bottle_price=excluded.bottle_price, drop_count=excluded.drop_count, "
         "retail_price=excluded.retail_price, en_name=COALESCE(excluded.en_name, oils.en_name), "
         "is_active=COALESCE(excluded.is_active, oils.is_active)",
-        (oil.name, oil.bottle_price, oil.drop_count, oil.retail_price, oil.en_name, oil.is_active),
+        (oil.name, oil.bottle_price, oil.drop_count, oil.retail_price, title_case(oil.en_name) if oil.en_name else oil.en_name, oil.is_active),
     )
     log_audit(conn, user["id"], "upsert_oil", "oil", oil.name, oil.name,
               json.dumps({"bottle_price": oil.bottle_price, "drop_count": oil.drop_count}))
@@ -789,8 +795,9 @@ def create_recipe(recipe: RecipeIn, user=Depends(get_current_user)):
         admin = c.execute("SELECT id FROM users WHERE role = 'admin' LIMIT 1").fetchone()
         if admin:
             owner_id = admin["id"]
-    c.execute("INSERT INTO recipes (name, note, owner_id) VALUES (?, ?, ?)",
+    en_name = title_case(recipe.en_name) if recipe.en_name else auto_translate(recipe.name)
-              (recipe.name, recipe.note, owner_id))
+    c.execute("INSERT INTO recipes (name, note, owner_id, en_name) VALUES (?, ?, ?, ?)",
+              (recipe.name, recipe.note, owner_id, en_name))
     rid = c.lastrowid
     for ing in recipe.ingredients:
         c.execute(
@@ -853,7 +860,7 @@ def update_recipe(recipe_id: int, update: RecipeUpdate, user=Depends(get_current
     if update.note is not None:
         c.execute("UPDATE recipes SET note = ? WHERE id = ?", (update.note, recipe_id))
     if update.en_name is not None:
-        c.execute("UPDATE recipes SET en_name = ? WHERE id = ?", (update.en_name, recipe_id))
+        c.execute("UPDATE recipes SET en_name = ? WHERE id = ?", (title_case(update.en_name), recipe_id))
     if update.ingredients is not None:
         c.execute("DELETE FROM recipe_ingredients WHERE recipe_id = ?", (recipe_id,))
         for ing in update.ingredients:
@@ -916,6 +923,10 @@ def adopt_recipe(recipe_id: int, user=Depends(require_role("admin"))):
         return {"ok": True, "msg": "already owned"}
     old_owner = conn.execute("SELECT id, role, display_name, username FROM users WHERE id = ?", (row["owner_id"],)).fetchone()
     old_name = (old_owner["display_name"] or old_owner["username"]) if old_owner else "unknown"
+    # Auto-fill en_name if missing
+    existing_en = conn.execute("SELECT en_name FROM recipes WHERE id = ?", (recipe_id,)).fetchone()
+    if not existing_en["en_name"]:
+        conn.execute("UPDATE recipes SET en_name = ? WHERE id = ?", (auto_translate(row["name"]), recipe_id))
     conn.execute("UPDATE recipes SET owner_id = ?, updated_by = ? WHERE id = ?", (user["id"], user["id"], recipe_id))
     log_audit(conn, user["id"], "adopt_recipe", "recipe", recipe_id, row["name"],
               json.dumps({"from_user": old_name}))
@@ -1811,6 +1822,16 @@ def startup():
             data = json.load(f)
         seed_defaults(data["oils_meta"], data["recipes"])
 
+    # Auto-fill missing en_name for existing recipes
+    conn = get_db()
+    missing = conn.execute("SELECT id, name FROM recipes WHERE en_name IS NULL OR en_name = ''").fetchall()
+    for row in missing:
+        conn.execute("UPDATE recipes SET en_name = ? WHERE id = ?", (auto_translate(row["name"]), row["id"]))
+    if missing:
+        conn.commit()
+        print(f"[INIT] Auto-translated {len(missing)} recipe names to English")
+    conn.close()
+
     if os.path.isdir(FRONTEND_DIR):
         # Serve static assets (js/css/images) directly
         app.mount("/assets", StaticFiles(directory=os.path.join(FRONTEND_DIR, "assets")), name="assets")

backend/translate.py

@@ -0,0 +1,112 @@
+"""Auto-translate Chinese recipe names to English using keyword dictionary."""
+
+# Common keywords in essential oil recipe names
+_KEYWORDS = {
+    # Body parts
+    '头': 'Head', '头疗': 'Scalp Therapy', '头皮': 'Scalp', '头发': 'Hair',
+    '脸': 'Face', '面部': 'Face', '眼': 'Eye', '眼部': 'Eye',
+    '鼻': 'Nose', '鼻腔': 'Nasal', '耳': 'Ear',
+    '颈': 'Neck', '颈椎': 'Cervical', '肩': 'Shoulder', '肩颈': 'Neck & Shoulder',
+    '背': 'Back', '腰': 'Lower Back', '腰椎': 'Lumbar',
+    '胸': 'Chest', '腹': 'Abdomen', '腹部': 'Abdominal',
+    '手': 'Hand', '脚': 'Foot', '足': 'Foot', '膝': 'Knee', '关节': 'Joint',
+    '皮肤': 'Skin', '肌肤': 'Skin', '毛孔': 'Pore',
+    '乳腺': 'Breast', '子宫': 'Uterine', '私密': 'Intimate',
+    '淋巴': 'Lymph', '肝': 'Liver', '肾': 'Kidney', '脾': 'Spleen', '胃': 'Stomach',
+    '肺': 'Lung', '心': 'Heart', '肠': 'Intestinal',
+    '带脉': 'Belt Meridian', '经络': 'Meridian',
+
+    # Symptoms & conditions
+    '酸痛': 'Pain Relief', '疼痛': 'Pain Relief', '止痛': 'Pain Relief',
+    '感冒': 'Cold', '发烧': 'Fever', '咳嗽': 'Cough', '咽喉': 'Throat',
+    '过敏': 'Allergy', '鼻炎': 'Rhinitis', '哮喘': 'Asthma',
+    '湿疹': 'Eczema', '痘痘': 'Acne', '粉刺': 'Acne',
+    '炎症': 'Anti-Inflammatory', '消炎': 'Anti-Inflammatory',
+    '便秘': 'Constipation', '腹泻': 'Diarrhea', '消化': 'Digestion',
+    '失眠': 'Insomnia', '助眠': 'Sleep Aid', '好眠': 'Sleep Well', '安眠': 'Sleep',
+    '焦虑': 'Anxiety', '抑郁': 'Depression', '情绪': 'Emotional',
+    '压力': 'Stress', '放松': 'Relaxation', '舒缓': 'Soothing',
+    '头痛': 'Headache', '偏头痛': 'Migraine',
+    '水肿': 'Edema', '浮肿': 'Swelling',
+    '痛经': 'Menstrual Pain', '月经': 'Menstrual', '经期': 'Menstrual',
+    '更年期': 'Menopause', '荷尔蒙': 'Hormone',
+    '结节': 'Nodule', '囊肿': 'Cyst',
+    '灰指甲': 'Nail Fungus', '脚气': 'Athlete\'s Foot',
+    '白发': 'Gray Hair', '脱发': 'Hair Loss', '生发': 'Hair Growth',
+    '瘦身': 'Slimming', '减肥': 'Weight Loss', '纤体': 'Body Sculpting',
+    '紫外线': 'UV', '晒伤': 'Sunburn', '防晒': 'Sun Protection',
+    '抗衰': 'Anti-Aging', '抗皱': 'Anti-Wrinkle', '美白': 'Whitening',
+    '补水': 'Hydrating', '保湿': 'Moisturizing',
+    '排毒': 'Detox', '清洁': 'Cleansing', '净化': 'Purifying',
+    '驱蚊': 'Mosquito Repellent', '驱虫': 'Insect Repellent',
+
+    # Actions & methods
+    '护理': 'Care', '调理': 'Therapy', '修复': 'Repair', '养护': 'Nourish',
+    '按摩': 'Massage', '刮痧': 'Gua Sha', '拔罐': 'Cupping', '艾灸': 'Moxibustion',
+    '泡脚': 'Foot Soak', '泡澡': 'Bath', '精油浴': 'Oil Bath',
+    '热敷': 'Hot Compress', '冷敷': 'Cold Compress', '敷面': 'Face Mask',
+    '喷雾': 'Spray', '滚珠': 'Roll-On', '扩香': 'Diffuser',
+    '涂抹': 'Topical', '吸嗅': 'Inhalation',
+    '疏通': 'Unblock', '提升': 'Boost', '增强': 'Enhance', '促进': 'Promote',
+    '预防': 'Prevention', '改善': 'Improve',
+    '祛湿': 'Dampness Relief', '驱寒': 'Warming',
+    '化痰': 'Phlegm Relief', '健脾': 'Spleen Wellness',
+    '化湿': 'Dampness Clear',
+
+    # Beauty
+    '美容': 'Beauty', '美发': 'Hair Care', '美体': 'Body Care',
+    '面膜': 'Face Mask', '发膜': 'Hair Mask', '眼霜': 'Eye Cream',
+    '精华': 'Serum', '乳液': 'Lotion', '洗发': 'Shampoo',
+
+    # General
+    '配方': 'Blend', '方': 'Blend', '包': 'Blend',
+    '增强版': 'Enhanced', '高配版': 'Premium', '基础版': 'Basic',
+    '男士': 'Men\'s', '女士': 'Women\'s', '儿童': 'Children\'s', '宝宝': 'Baby',
+    '日常': 'Daily', '夜间': 'Night', '早晨': 'Morning',
+    '呼吸': 'Respiratory', '呼吸系统': 'Respiratory System',
+    '免疫': 'Immunity', '免疫力': 'Immunity',
+    '细胞': 'Cellular', '律动': 'Rhythm',
+}
+
+# Longer keys first for greedy matching
+_SORTED_KEYS = sorted(_KEYWORDS.keys(), key=len, reverse=True)
+
+
+def auto_translate(name: str) -> str:
+    """Translate a Chinese recipe name to English using keyword matching."""
+    if not name:
+        return ''
+    remaining = name.strip()
+    parts = []
+    i = 0
+    while i < len(remaining):
+        matched = False
+        for key in _SORTED_KEYS:
+            if remaining[i:i+len(key)] == key:
+                en = _KEYWORDS[key]
+                if en not in parts:  # avoid duplicates
+                    parts.append(en)
+                i += len(key)
+                matched = True
+                break
+        if not matched:
+            # Skip numbers, punctuation, and unrecognized chars
+            ch = remaining[i]
+            if ch.isascii() and ch.isalpha():
+                # Collect consecutive ASCII chars
+                j = i
+                while j < len(remaining) and remaining[j].isascii() and remaining[j].isalpha():
+                    j += 1
+                word = remaining[i:j]
+                if word not in parts:
+                    parts.append(word)
+                i = j
+            else:
+                i += 1
+
+    if parts:
+        result = ' '.join(parts)
+        # Title case each word but preserve apostrophes (Men's not Men'S)
+        return ' '.join(w[0].upper() + w[1:] if w else w for w in result.split())
+    # Fallback: return original name
+    return name