feat: Kinetic Dark 设计语言 + Lucide 图标迁移 + 首页轻量个性化

- 建立 Lucide 子集 iconfont（49 字形），全站 emoji 替换为 fc-icon 组件
- 重塑 Design Token（冷中性近黑底 + Volt 荧光绿 #B6F24E），消除硬编码颜色
- 首页登录后个性化：我的计划 / 我的收藏 / 今日推荐（纯前端复用现有 API）
- 后端 DEFAULT_EMOJI→Lucide 名，PALETTE 对齐 Kinetic Dark 语义色板
- 修复 person-standing 缺失字形；14 个官方组合 seed emoji 全部映射到现有字形

miniprogram/utils/icon-map.js

@@ -0,0 +1,53 @@
+// AUTO-GENERATED by /tmp/gen_iconfont.mjs — 勿手改
+// Lucide (MIT) 子集 iconfont，font-family: fc-icon
+module.exports = {
+  "zap": "\\uf101",
+  "x-circle": "\\uf102",
+  "user": "\\uf103",
+  "trophy": "\\uf104",
+  "trending-up": "\\uf105",
+  "trash-2": "\\uf106",
+  "target": "\\uf107",
+  "star": "\\uf108",
+  "sparkles": "\\uf109",
+  "sliders-horizontal": "\\uf10a",
+  "share-2": "\\uf10b",
+  "settings": "\\uf10c",
+  "search": "\\uf10d",
+  "rotate-cw": "\\uf10e",
+  "refresh-cw": "\\uf10f",
+  "plus": "\\uf110",
+  "play": "\\uf111",
+  "person-standing": "\\uf112",
+  "medal": "\\uf113",
+  "log-out": "\\uf114",
+  "layout-grid": "\\uf115",
+  "layers": "\\uf116",
+  "info": "\\uf117",
+  "image": "\\uf118",
+  "home": "\\uf119",
+  "heart": "\\uf11a",
+  "grid-2x2": "\\uf11b",
+  "folder-open": "\\uf11c",
+  "flame": "\\uf11d",
+  "filter": "\\uf11e",
+  "dumbbell": "\\uf11f",
+  "download": "\\uf120",
+  "clock": "\\uf121",
+  "clipboard-list": "\\uf122",
+  "circle-x": "\\uf123",
+  "chevron-right": "\\uf124",
+  "chevron-down": "\\uf125",
+  "check": "\\uf126",
+  "check-circle": "\\uf127",
+  "calendar": "\\uf128",
+  "bookmark": "\\uf129",
+  "bike": "\\uf12a",
+  "bell": "\\uf12b",
+  "award": "\\uf12c",
+  "arrow-right": "\\uf12d",
+  "arrow-left": "\\uf12e",
+  "alert-circle": "\\uf12f",
+  "activity": "\\uf130",
+  "accessibility": "\\uf131"
+};

miniprogram/utils/icon-name.js

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+// emoji → Lucide 图标名 映射（后端历史数据里仍可能带 emoji 的字段，如 plan.emoji / collection.emoji）
+const EMOJI_TO_ICON = {
+  '✨': 'sparkles', '💪': 'accessibility', '🏋️': 'dumbbell', '📋': 'clipboard-list',
+  '🗂️': 'folder-open', '👤': 'user', '🏃': 'person-standing', '🔥': 'flame',
+  '❤️': 'heart', '⭐': 'star', '🎯': 'target', '🧘': 'activity', '🥗': 'activity',
+  '🏠': 'home', '📚': 'layout-grid', '📝': 'clipboard-list', '💡': 'sparkles',
+  '🚀': 'trending-up', '⏱️': 'clock', '🏆': 'trophy', '🥇': 'medal',
+  // 官方训练组合 seed emoji（后端 collections.ts）→ 全部映射到现有字形
+  '⚡': 'zap', '🌟': 'star', '🌱': 'trending-up', '🌸': 'sparkles',
+  '📈': 'trending-up', '🦵': 'dumbbell', '🦾': 'dumbbell', '🪢': 'activity'
+};
+
+// 旧 emoji → lucide 名；已是 lucide 名则直接透传；未知返回 fallback
+function iconName(v, fallback) {
+  if (!v) return fallback || 'folder-open';
+  return EMOJI_TO_ICON[v] || v;
+}
+
+module.exports = { EMOJI_TO_ICON, iconName };