feat(MCN工作台): 数据功能页+图标扁平化+多项UI优化

- 工作台大版本升级：hash 路由 + 6 数据功能页（周榜/热门账号/账号详情/视频详情/AI写脚本/AI写作复盘），只读复用 dsh 库副本 + 抖音榜单 JSON
- 数据库隔离：复制 dsh 库到 mcn-work-shop/，与 dsh 原库各访问各的（已 gitignore）
- 图标全面扁平化：Lucide 线性 SVG，功能图标亮色区分，文字标题去图标
- 首页重构：功能入口卡 + AI写剧本快捷卡片(2列/8个/5行预览) + 独立帮助页 + header 精简
- 新增设计技能 impeccable + taste-skill（生成网页时参考）
- 修复：fmtTime 跨 script 全局冲突(P0)、弹窗关闭、外链新标签打开等

.workbuddy/skills/impeccable/reference/ios.md

@@ -0,0 +1,45 @@
+# iOS platform
+
+For native iOS / iPadOS apps: SwiftUI, UIKit, React Native, Expo, Flutter shipping to Apple hardware.
+
+On native, the visitor mode narrows what expression may override. HIG conformance governs structure, navigation, and interaction in every mode; brand expresses through the layer the platform leaves open (tint, type, motion, content).
+
+## The iOS slop test
+
+Would a fluent iPhone user trust this app, or pause at off-spec controls? The tell is "ported from a website": reinvented navigation bars, custom back gestures, web-shaped buttons, hover-dependent affordances. Default to the platform's components; depart only for a reason the user would thank you for.
+
+## Layout & structure
+
+- **Safe area.** Lay out inside the safe-area insets. No controls under the notch, Dynamic Island, home indicator, or rounded corners. <!-- rule:ios-layout-safe-area -->
+- **System navigation.** Tab bar for 2–5 top-level sections (sections, never actions), navigation stack for hierarchy, sheet for self-contained tasks. No custom global nav, no mixed metaphors. <!-- rule:ios-layout-standard-navigation -->
+- **Edge-swipe back stays alive.** The left-edge back gesture is muscle memory; never disable or overlay it. <!-- rule:ios-layout-edge-swipe-back -->
+- **Large titles** on top-level screens, collapsing to inline on scroll. Deep detail screens stay inline. <!-- rule:ios-layout-large-titles -->
+
+## Touch targets
+
+- **44×44 pt minimum** for every tappable control, with breathing room between adjacent targets. <!-- rule:ios-touch-target-44pt -->
+
+## Typography
+
+- **Dynamic Type.** Use the system text styles (Large Title through Caption) so text follows the user's reading size. No hard-coded point sizes. <!-- rule:ios-typo-dynamic-type -->
+- **San Francisco carries the UI.** Body, labels, and controls stay on SF Pro / SF Compact; a brand face may appear in display moments. <!-- rule:ios-typo-system-font -->
+- **11 pt floor**; Body is 17 pt. <!-- rule:ios-typo-minimum-size -->
+
+## Color & materials
+
+- **Semantic system colors** (label, secondaryLabel, systemBackground, separator, tint). They adapt to Dark Mode and increased contrast automatically; raw hex breaks there. <!-- rule:ios-color-semantic-system -->
+- **Dark Mode is a first-class appearance.** Design and test both. <!-- rule:ios-color-dark-mode -->
+- **One tint color** drives interactive elements; decoration is not its job. <!-- rule:ios-color-single-tint -->
+- **System materials** for blur and translucency behind bars and sheets; no hand-rolled glassmorphism. <!-- rule:ios-color-system-materials -->
+
+## Components & controls
+
+- **Platform controls.** Switch, segmented control, stepper, system pickers, action sheets, alerts, context menus, swipe actions. Reinventing these for flavor is the most common native slop. <!-- rule:ios-components-native-controls -->
+- **SF Symbols** for iconography: baseline-aligned, Dynamic Type-aware, weight and scale variants. Don't mix in a web icon set. <!-- rule:ios-components-sf-symbols -->
+- **Deliberate modality.** Sheet for a focused dismissible sub-task, full-screen cover for immersion. Clear Cancel/Done; honor swipe-to-dismiss unless data loss requires a guard. <!-- rule:ios-components-modality -->
+- **Grouped/inset lists** for settings-shaped content; no bespoke card stacks. <!-- rule:ios-components-grouped-lists -->
+
+## Motion
+
+- **System transitions.** Push slides, sheets rise, dismiss reverses the entrance. Custom transitions that fight the navigation model disorient. <!-- rule:ios-motion-system-transitions -->
+- **Honor Reduce Motion.** Crossfade instead of parallax and large slides. <!-- rule:ios-motion-reduce-motion -->