music(player): 变速播放 + AB Loop

- 变速：底部 1× 圆形按钮循环切 0.5/0.75/1/1.25/1.5；preservesPitch=true（浏览器 native 保音高）；localStorage 持久化全局
- AB Loop：A B 两按钮在当前位置打点，🔁 开关；进度条上绿色高亮 A↔B 区段；timeupdate 触发 ≥B 跳回 A；切歌自动清 A/B

apps/articulate/frontend/public/wordlists/body.txt

@@ -0,0 +1,257 @@
+easy - head - 头
+easy - face - 脸
+easy - eye - 眼睛
+easy - nose - 鼻子
+easy - mouth - 嘴巴
+easy - ear - 耳朵
+easy - hair - 头发
+easy - neck - 脖子
+easy - shoulder - 肩膀
+easy - arm - 手臂
+easy - hand - 手
+easy - finger - 手指
+easy - thumb - 大拇指
+easy - leg - 腿
+easy - knee - 膝盖
+easy - foot - 脚
+easy - toe - 脚趾
+easy - back - 背部
+easy - chest - 胸部
+easy - stomach - 肚子
+easy - belly - 腹部
+easy - heart - 心脏
+easy - brain - 大脑
+easy - bone - 骨头
+easy - skin - 皮肤
+easy - blood - 血液
+easy - tooth - 牙齿
+easy - tongue - 舌头
+easy - lip - 嘴唇
+easy - chin - 下巴
+easy - cheek - 脸颊
+easy - forehead - 额头
+easy - eyebrow - 眉毛
+easy - eyelash - 睫毛
+easy - eyelid - 眼皮
+easy - pupil - 瞳孔
+easy - iris - 虹膜
+easy - nostril - 鼻孔
+easy - jaw - 下巴
+easy - gum - 牙龈
+easy - throat - 喉咙
+easy - voice - 声音
+easy - breath - 呼吸
+easy - lung - 肺
+easy - rib - 肋骨
+easy - spine - 脊柱
+easy - hip - 臀部
+easy - waist - 腰
+easy - elbow - 肘
+easy - wrist - 手腕
+easy - palm - 手掌
+easy - fist - 拳头
+easy - knuckle - 指关节
+easy - nail - 指甲
+easy - ankle - 脚踝
+easy - heel - 脚后跟
+easy - sole - 脚底
+easy - muscle - 肌肉
+easy - vein - 静脉
+easy - artery - 动脉
+easy - nerve - 神经
+easy - liver - 肝脏
+easy - kidney - 肾脏
+easy - stomach - 胃
+easy - intestine - 肠
+easy - bladder - 膀胱
+easy - spleen - 脾脏
+easy - pancreas - 胰腺
+medium - skull - 头骨
+medium - temple - 太阳穴
+medium - scalp - 头皮
+medium - nape - 后颈
+medium - collarbone - 锁骨
+medium - breastbone - 胸骨
+medium - ribcage - 胸腔
+medium - abdomen - 腹部
+medium - navel - 肚脐
+medium - groin - 腹股沟
+medium - buttock - 臀部
+medium - thigh - 大腿
+medium - calf - 小腿
+medium - shin - 胫骨
+medium - kneecap - 膝盖骨
+medium - hamstring - 腿筋
+medium - quadriceps - 股四头肌
+medium - biceps - 二头肌
+medium - triceps - 三头肌
+medium - forearm - 前臂
+medium - upper arm - 上臂
+medium - armpit - 腋窝
+medium - shoulder blade - 肩胛骨
+medium - backbone - 脊梁骨
+medium - tailbone - 尾骨
+medium - pelvis - 骨盆
+medium - femur - 股骨
+medium - tibia - 胫骨
+medium - fibula - 腓骨
+medium - humerus - 肱骨
+medium - radius - 桡骨
+medium - ulna - 尺骨
+medium - carpal - 腕骨
+medium - metacarpal - 掌骨
+medium - phalanx - 指骨
+medium - tarsal - 跗骨
+medium - metatarsal - 跖骨
+medium - cartilage - 软骨
+medium - ligament - 韧带
+medium - tendon - 肌腱
+medium - joint - 关节
+medium - socket - 关节窝
+medium - marrow - 骨髓
+medium - membrane - 膜
+medium - tissue - 组织
+medium - organ - 器官
+medium - gland - 腺体
+medium - hormone - 荷尔蒙
+medium - enzyme - 酶
+medium - protein - 蛋白质
+medium - cell - 细胞
+medium - nucleus - 细胞核
+medium - chromosome - 染色体
+medium - gene - 基因
+medium - DNA - DNA
+medium - RNA - RNA
+medium - plasma - 血浆
+medium - platelet - 血小板
+medium - red blood cell - 红细胞
+medium - white blood cell - 白细胞
+medium - antibody - 抗体
+medium - antigen - 抗原
+medium - immune system - 免疫系统
+medium - lymph - 淋巴
+medium - lymph node - 淋巴结
+medium - tonsil - 扁桃体
+medium - thymus - 胸腺
+medium - thyroid - 甲状腺
+medium - parathyroid - 甲状旁腺
+medium - adrenal gland - 肾上腺
+medium - pituitary gland - 垂体
+medium - pineal gland - 松果体
+medium - hypothalamus - 下丘脑
+medium - cerebrum - 大脑
+medium - cerebellum - 小脑
+medium - brainstem - 脑干
+medium - cortex - 皮层
+medium - hippocampus - 海马体
+medium - amygdala - 杏仁核
+medium - thalamus - 丘脑
+medium - medulla - 髓质
+medium - spinal cord - 脊髓
+medium - neuron - 神经元
+medium - synapse - 突触
+medium - axon - 轴突
+medium - dendrite - 树突
+medium - myelin - 髓鞘
+medium - reflex - 反射
+medium - sensation - 感觉
+medium - perception - 知觉
+hard - cerebral cortex - 大脑皮层
+hard - frontal lobe - 额叶
+hard - parietal lobe - 顶叶
+hard - temporal lobe - 颞叶
+hard - occipital lobe - 枕叶
+hard - corpus callosum - 胼胝体
+hard - basal ganglia - 基底神经节
+hard - substantia nigra - 黑质
+hard - ventricle - 脑室
+hard - meninges - 脑膜
+hard - dura mater - 硬脑膜
+hard - arachnoid - 蛛网膜
+hard - pia mater - 软脑膜
+hard - cerebrospinal fluid - 脑脊液
+hard - optic nerve - 视神经
+hard - auditory nerve - 听神经
+hard - olfactory nerve - 嗅神经
+hard - vagus nerve - 迷走神经
+hard - sciatic nerve - 坐骨神经
+hard - ulnar nerve - 尺神经
+hard - radial nerve - 桡神经
+hard - median nerve - 正中神经
+hard - femoral nerve - 股神经
+hard - tibial nerve - 胫神经
+hard - autonomic nervous system - 自主神经系统
+hard - sympathetic - 交感神经
+hard - parasympathetic - 副交感神经
+hard - somatic - 躯体神经
+hard - sensory neuron - 感觉神经元
+hard - motor neuron - 运动神经元
+hard - interneuron - 中间神经元
+hard - ganglion - 神经节
+hard - plexus - 神经丛
+hard - esophagus - 食道
+hard - duodenum - 十二指肠
+hard - jejunum - 空肠
+hard - ileum - 回肠
+hard - colon - 结肠
+hard - cecum - 盲肠
+hard - appendix - 阑尾
+hard - rectum - 直肠
+hard - anus - 肛门
+hard - bile duct - 胆管
+hard - gallbladder - 胆囊
+hard - bile - 胆汁
+hard - gastric juice - 胃液
+hard - saliva - 唾液
+hard - salivary gland - 唾液腺
+hard - parotid gland - 腮腺
+hard - sublingual gland - 舌下腺
+hard - submandibular gland - 颌下腺
+hard - pharynx - 咽
+hard - larynx - 喉
+hard - trachea - 气管
+hard - bronchus - 支气管
+hard - bronchiole - 细支气管
+hard - alveolus - 肺泡
+hard - diaphragm - 横膈膜
+hard - pleura - 胸膜
+hard - pericardium - 心包
+hard - myocardium - 心肌
+hard - endocardium - 内心膜
+hard - atrium - 心房
+hard - ventricle - 心室
+hard - valve - 瓣膜
+hard - aorta - 主动脉
+hard - vena cava - 腔静脉
+hard - pulmonary artery - 肺动脉
+hard - pulmonary vein - 肺静脉
+hard - coronary artery - 冠状动脉
+hard - carotid artery - 颈动脉
+hard - jugular vein - 颈静脉
+hard - capillary - 毛细血管
+hard - endothelium - 内皮
+hard - epithelium - 上皮
+hard - connective tissue - 结缔组织
+hard - adipose tissue - 脂肪组织
+hard - mucous membrane - 粘膜
+hard - serous membrane - 浆膜
+hard - synovial membrane - 滑膜
+hard - peritoneum - 腹膜
+hard - mesentery - 肠系膜
+hard - omentum - 网膜
+hard - fascia - 筋膜
+hard - aponeurosis - 腱膜
+hard - bursa - 滑囊
+hard - meniscus - 半月板
+hard - intervertebral disc - 椎间盘
+hard - vertebra - 椎骨
+hard - sacrum - 骶骨
+hard - coccyx - 尾骨
+hard - sternum - 胸骨
+hard - scapula - 肩胛骨
+hard - clavicle - 锁骨
+hard - patella - 髌骨
+hard - mandible - 下颌骨
+hard - maxilla - 上颌骨
+hard - zygomatic bone - 颧骨
+