baseline: dsh 工作区基线快照（2026-09-10，全新历史起点）

本提交为 dsh_mcn_workshop 仓库的首个提交（旧仓 dsh_MCNProject 已停用），
完整固化 C:/Users/Administrator/.dsh 当前磁盘状态。

1) 临时数据清理：移出 sessions/(81M)、logs/、skill-backup-20260906/(14M)、
   scripts/__pycache__、storages/workspace.json.bak —— 合计 94M（.dsh 162M → 68M）
2) 凭据脱敏：.credentials.yaml（含明文 DEEPSEEK_API_KEY）移出 git 跟踪并加入
   .gitignore；mcn-data-insight/scripts/setup_redfox_key.py 中真实 key 示例改为占位符
3) .gitignore 增补 logs/、skill-backup-*/ 规则
4) 技能结构以当前磁盘状态为准：skills/ = mcn-short-video / impeccable / taste-skill /
   dsh-multi-user-migration；旧技能目录（mcn-dou-analysis、storyboard-prompt、
   short-video-script、browser-harness、mcn-data-insight）与
   profiles/web/node_modules/dsh-vision-router 本地已不存在，本提交记为删除

skills/impeccable/reference/android.md

@@ -0,0 +1,40 @@
+# Android platform
+
+For native Android apps: Jetpack Compose, Android Views, React Native, Expo, Flutter shipping to Android hardware.
+
+On native, the visitor mode narrows what expression may override. Material Design 3 governs structure, navigation, and interaction in every mode; brand expresses through Material's theming (color roles, type scale, shape, motion). A Material-everywhere cross-platform app that also ships to iPhone still owes iOS its OS guarantees on that hardware: safe-area insets, Reduce Motion, edge-swipe back.
+
+## The Android slop test
+
+Would a fluent Android user trust this app, or trip on off-spec components? The most common tell is an iOS app wearing Android's skin: a bottom-only navigation copied from iPhone, a back arrow that ignores the system Back gesture, Cupertino-shaped switches and dialogs. Material 3 is the rulebook; follow its components and theme the brand through it.
+
+## Layout & structure
+
+- **Material navigation, matched to size.** Navigation bar (bottom, 3–5 destinations) on compact width; navigation rail or drawer on expanded width. Never ship a phone bottom-bar untouched on a tablet. <!-- rule:android-layout-adaptive-nav -->
+- **System Back always works.** Honor the predictive Back gesture and Back button; never trap the user or hijack the gesture. <!-- rule:android-layout-system-back -->
+- **Edge-to-edge with window insets.** Apply the status bar, navigation bar, display cutout, and IME insets so content never hides behind system bars or the keyboard. <!-- rule:android-layout-window-insets -->
+- **Top app bar for screen context**; pair with a FAB when the screen has a single primary action. <!-- rule:android-layout-top-app-bar -->
+
+## Touch targets
+
+- **48×48 dp minimum** for every touch target, with at least 8 dp between them. <!-- rule:android-touch-target-48dp -->
+
+## Typography
+
+- **Material type scale.** Display, Headline, Title, Body, Label roles (large/medium/small each). Map text to roles; never hand-pick sizes per screen. <!-- rule:android-typo-type-scale -->
+- **Roboto is the system face**; theme a brand face in through the type scale, keeping body, labels, and controls legible and consistent. <!-- rule:android-typo-system-font -->
+- **sp units, never fixed px**, so type follows the system font-size setting. <!-- rule:android-typo-scalable-sp -->
+
+## Color & theming
+
+- **Material color roles** (primary, on-primary, surface, surface-variant, secondary-container, outline, error). Role tokens resolve light/dark and contrast variants automatically; raw hex breaks there. <!-- rule:android-color-role-tokens -->
+- **Dynamic Color (Material You)** where it fits: derive the scheme from the user's wallpaper on Android 12+, with a static fallback. <!-- rule:android-color-dynamic-color -->
+- **Dark theme is a first-class scheme.** Design and test it; never a quick invert. <!-- rule:android-color-dark-theme -->
+- **Tonal elevation.** Convey elevation through the standard surface tonal levels (plus shadow where appropriate); no arbitrary drop shadows. <!-- rule:android-color-tonal-elevation -->
+
+## Components & motion
+
+- **Material components.** Buttons (filled / tonal / outlined / text), FAB, switches, chips, snackbars, bottom sheets, Material dialogs, navigation bar/rail/drawer. Never port iOS controls or invent equivalents. <!-- rule:android-components-material -->
+- **One FAB, one primary action.** Never stack FABs or spend one on a secondary task. <!-- rule:android-components-single-fab -->
+- **Snackbars for transient feedback** (actionable when useful, never a toast for that); dialogs only for decisions that must interrupt. <!-- rule:android-components-snackbar -->
+- **Material motion patterns.** Container transform, shared-axis, fade-through, with standard easing and durations; honor the system Remove animations setting with a crossfade or instant cut. <!-- rule:android-motion-material-and-reduce -->