Remove need for duplicate themes folder in root

package.json

@@ -24,14 +24,13 @@
  ],
  "scripts": {
  "build:cover": "node build/cover.js",
- "build:css:min": "mkdirp lib/themes && npm run css -- -o lib/themes && node build/mincss.js",
- "build:css": "mkdirp themes && npm run css -- -o themes",
+ "build:css:min": "node build/mincss.js",
+ "build:css": "mkdirp lib/themes && node build/css -o lib/themes",
  "build:emoji": "node ./build/emoji.js",
  "build:html": "node ./build/html.js",
  "build:js": "cross-env NODE_ENV=production node build/build.js",
  "build:test": "npm run build && npm test",
  "build": "rimraf lib themes && run-s build:js build:css build:css:min build:cover build:emoji build:html",
- "css": "node build/css",
  "dev": "run-p serve:dev watch:*",
  "docker:build:test": "npm run docker:cli -- build:test",
  "docker:build": "docker build -f Dockerfile -t docsify-test:local .",
@@ -51,7 +50,8 @@
  "pub:next": "cross-env RELEASE_TAG=next sh build/release.sh",
  "pub": "sh build/release.sh",
  "serve:dev": "npm run serve -- --dev",
- "serve": "npm run build && node server",
+ "serve:preview": "npm run serve -- --preview",
+ "serve": "npm run build:html && node server",
  "test:e2e": "playwright test",
  "test:integration": "npm run jest -- --selectProjects integration",
  "test:unit": "npm run jest -- --selectProjects unit",