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/scripts/surface-brief.mjs

@@ -0,0 +1,74 @@
+#!/usr/bin/env node
+import fs from 'node:fs';
+import path from 'node:path';
+import { fileURLToPath, pathToFileURL } from 'node:url';
+import { resolveProjectRoot } from './context.mjs';
+import {
+  listSurfaceBriefs,
+  resolveSurfaceBrief,
+  surfaceBriefPathForTarget,
+  writeSurfaceBrief,
+} from './lib/surface-briefs.mjs';
+
+function summary(brief, projectRoot) {
+  return {
+    slug: brief.slug,
+    path: path.relative(projectRoot, brief.path).split(path.sep).join('/'),
+    primaryTarget: brief.primaryTarget,
+    relatedTargets: brief.relatedTargets,
+  };
+}
+
+function main(argv) {
+  const [command, target, bodyFile, ...relatedTargets] = argv;
+  const projectRoot = resolveProjectRoot(process.cwd(), target ? { targetPath: target } : {});
+  if (command === 'path') {
+    const filePath = surfaceBriefPathForTarget(target, { projectRoot });
+    if (!filePath) throw new Error('surface brief path requires a concrete target');
+    process.stdout.write(`${path.relative(process.cwd(), filePath) || filePath}\n`);
+    return;
+  }
+  if (command === 'list') {
+    process.stdout.write(`${JSON.stringify(listSurfaceBriefs(projectRoot).map((brief) => summary(brief, projectRoot)), null, 2)}\n`);
+    return;
+  }
+  if (command === 'read') {
+    const result = resolveSurfaceBrief(projectRoot, target || null);
+    if (result.brief) {
+      process.stdout.write(result.brief.text);
+      return;
+    }
+    if (result.candidates.length) process.stderr.write(`${JSON.stringify(result.candidates.map((brief) => summary(brief, projectRoot)), null, 2)}\n`);
+    process.exit(2);
+  }
+  if (command === 'write') {
+    if (!target || !bodyFile) throw new Error('usage: surface-brief.mjs write <primary-target> <body-file>');
+    const filePath = writeSurfaceBrief({
+      projectRoot,
+      primaryTarget: target,
+      relatedTargets,
+      body: fs.readFileSync(bodyFile, 'utf-8'),
+    });
+    process.stdout.write(`${path.relative(process.cwd(), filePath) || filePath}\n`);
+    return;
+  }
+  throw new Error('usage: surface-brief.mjs <path|list|read|write> [target] [body-file] [related-target ...]');
+}
+
+function isMainModule() {
+  if (!process.argv[1]) return false;
+  try {
+    return fs.realpathSync(fileURLToPath(import.meta.url)) === fs.realpathSync(process.argv[1]);
+  } catch {
+    return import.meta.url === pathToFileURL(process.argv[1]).href;
+  }
+}
+
+if (isMainModule()) {
+  try {
+    main(process.argv.slice(2));
+  } catch (error) {
+    process.stderr.write(`${error?.message || error}\n`);
+    process.exit(1);
+  }
+}