diff --git a/.github/workflows/ci-pr.yml b/.github/workflows/ci-pr.yml
new file mode 100644
index 0000000..ec0b2d2
--- /dev/null
+++ b/.github/workflows/ci-pr.yml
@@ -0,0 +1,58 @@
+name: PR CI (tests & build)
+
+on:
+  pull_request:
+    branches:
+      - main
+      - dev
+
+permissions:
+  contents: read
+
+# 使用 PR 的 head SHA 作为并发组，确保同一 PR 的多次推送会取消之前的运行
+concurrency:
+  group: pr-${{ github.event.pull_request.head.sha }}
+  cancel-in-progress: true
+
+jobs:
+  pr-checks:
+    name: Test and Build
+    runs-on: ubuntu-latest
+    steps:
+      # 拉取代码
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # 设置 Node.js 20 并启用 yarn 缓存
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: yarn
+
+      # 安装依赖（使用 frozen-lockfile 确保一致性）
+      - name: Install dependencies
+        run: |
+          corepack enable
+          yarn --version
+          yarn install --frozen-lockfile
+
+      # 运行 lint 检查
+      - name: Run lint
+        run: |
+          yarn lint
+
+      # 运行单元测试
+      - name: Run unit tests
+        run: |
+          yarn test
+
+      # 构建项目（库 + 类型定义）
+      - name: Build (lib + types)
+        run: |
+          yarn build:all
+
+      # 验证 npm pack 是否正常（干运行）
+      - name: Verify npm pack (dry-run)
+        run: |
+          npm pack --dry-run
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 0000000..edb9c56
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,112 @@
+name: Publish to npm (version branches)
+
+on:
+  push:
+    branches:
+      - 'version/[0-9]+.[0-9]+.[0-9]+'
+      - 'version/[0-9]+.[0-9]+.[0-9]+-**'
+
+permissions:
+  contents: read
+
+jobs:
+  publish:
+    name: Build and Publish
+    runs-on: ubuntu-latest
+    steps:
+      # 拉取代码（需要完整历史以解析版本）
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      # 解析分支类型并设定 npm dist-tag
+      # 支持三种标签：latest（正式版）、dev（开发预发布）、beta（测试预发布）
+      - name: Classify branch and prepare env
+        run: |
+          BRANCH="${GITHUB_REF#refs/heads/}"
+          echo "Detected branch: $BRANCH"
+
+          # 从分支名称提取版本号：version/1.0.0 -> 1.0.0
+          VERSION="${BRANCH#version/}"
+          echo "VERSION=$VERSION" >> "$GITHUB_ENV"
+
+          # 根据 package.json 的 version 判断是否为预发布版本
+          PKG_VERSION=$(node -e "console.log(JSON.parse(require('fs').readFileSync('package.json','utf8')).version)")
+
+          if [[ "$PKG_VERSION" =~ -dev ]]; then
+            echo "PUBLISH_TAG=dev" >> "$GITHUB_ENV"
+            echo "Version type: Dev Pre-release"
+          elif [[ "$PKG_VERSION" =~ -beta ]]; then
+            echo "PUBLISH_TAG=beta" >> "$GITHUB_ENV"
+            echo "Version type: Beta Pre-release"
+          else
+            echo "PUBLISH_TAG=latest" >> "$GITHUB_ENV"
+            echo "Version type: Release"
+          fi
+
+          echo "Branch version: $VERSION"
+          echo "Package version: $PKG_VERSION"
+          echo "Publish tag: $PUBLISH_TAG"
+
+      # 安装 Node，并配置 npm registry（用于 npm publish 鉴权）
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          registry-url: https://registry.npmjs.org
+          cache: yarn
+
+      # 使用 Yarn 安装依赖（项目包含 yarn.lock）
+      - name: Install dependencies
+        run: |
+          corepack enable
+          yarn --version
+          yarn install --frozen-lockfile
+
+      # 读取 package.json 的 name 与 version，并检查该版本是否已发布
+      # 已发布则跳过后续发布步骤，避免重复发布导致失败
+      - name: Check if version already published
+        id: version
+        shell: bash
+        run: |
+          PKG_NAME=$(node -e "console.log(JSON.parse(require('fs').readFileSync('package.json','utf8')).name)")
+          VERSION=$(node -e "console.log(JSON.parse(require('fs').readFileSync('package.json','utf8')).version)")
+          echo "Package: $PKG_NAME"
+          echo "Version: $VERSION"
+          if npm view "$PKG_NAME@$VERSION" version > /dev/null 2>&1; then
+            echo "should_publish=false" >> "$GITHUB_OUTPUT"
+            echo "Version $VERSION already exists on npm, skip publishing."
+          else
+            echo "should_publish=true" >> "$GITHUB_OUTPUT"
+            echo "Version $VERSION not found on npm, will publish."
+          fi
+
+      # 构建项目（npm publish 会触发 prepublishOnly，其中也会执行构建，但这里提前构建以暴露错误）
+      - name: Build project
+        if: steps.version.outputs.should_publish == 'true'
+        run: |
+          yarn build:all
+
+      # 发布到 npm。latest/dev/beta 分别使用对应的 dist-tag
+      # 需要在项目 Secrets 配置 NPM_TOKEN（具有发布权限的 npm 令牌）
+      - name: Publish to npm
+        if: steps.version.outputs.should_publish == 'true'
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: |
+          # 使用 npm publish 以触发 prepublishOnly（包含构建），并指定 tag 与访问级别
+          npm publish --tag "$PUBLISH_TAG" --access public
+
+      # 确保预发布标签的 dist-tag 指向当前 version（支持 dev 和 beta）
+      - name: Ensure pre-release dist-tag
+        if: (env.PUBLISH_TAG == 'dev' || env.PUBLISH_TAG == 'beta') && steps.version.outputs.should_publish == 'true'
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: |
+          PKG_NAME=$(node -e "console.log(JSON.parse(require('fs').readFileSync('package.json','utf8')).name)")
+          VERSION=$(node -e "console.log(JSON.parse(require('fs').readFileSync('package.json','utf8')).version)")
+          echo "Ensure dist-tag: ${PUBLISH_TAG} -> $VERSION"
+          # 若版本已存在，也可重复设置 tag；若已指向则不变
+          npm dist-tag add "$PKG_NAME@$VERSION" "$PUBLISH_TAG" || true
+          npm dist-tag ls "$PKG_NAME"
diff --git a/.github/workflows/sync-master-to-dev.yml b/.github/workflows/sync-master-to-dev.yml
new file mode 100644
index 0000000..eb4fefb
--- /dev/null
+++ b/.github/workflows/sync-master-to-dev.yml
@@ -0,0 +1,116 @@
+name: Sync master to dev
+
+# 触发条件：
+# 1. 直接推送到 master/main 分支
+# 2. 向 master/main 分支发起 PR（opened/synchronize/reopened 事件）
+on:
+  push:
+    branches:
+      - master
+      - main
+  pull_request:
+    branches:
+      - master
+      - main
+    types: [opened, synchronize, reopened]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+# 使用固定并发组，确保同步操作不会并行执行
+concurrency:
+  group: sync-master-to-dev
+  cancel-in-progress: false
+
+jobs:
+  sync:
+    # 仅在以下情况执行：
+    # - 非 PR 事件（即直接推送）
+    # - PR 来自同一仓库（非 fork）
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
+    name: Merge master/main into dev
+    runs-on: ubuntu-latest
+    steps:
+      # 拉取完整 git 历史（合并需要）
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      # 配置 git 用户信息（用于自动提交）
+      - name: Configure Git user
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+
+      # 获取所有远程分支
+      - name: Fetch branches
+        run: |
+          git remote set-url origin "${{ github.server_url }}/${{ github.repository }}.git"
+          git fetch origin --prune
+          git fetch origin dev || true
+
+      # 检测源分支（推送事件取当前分支，PR 事件取 base 分支）
+      - name: Detect source branch
+        id: detect
+        shell: bash
+        run: |
+          if [ "${{ github.event_name }}" = "pull_request" ]; then
+            SOURCE_BRANCH="${{ github.base_ref }}"
+          else
+            SOURCE_BRANCH="${GITHUB_REF#refs/heads/}"
+          fi
+
+          if [ -z "$SOURCE_BRANCH" ]; then
+            echo "::error::Unable to determine source branch."
+            exit 1
+          fi
+
+          if ! git ls-remote --exit-code --heads origin "$SOURCE_BRANCH" >/dev/null 2>&1; then
+            echo "::error::Source branch '$SOURCE_BRANCH' does not exist on origin."
+            exit 1
+          fi
+
+          echo "name=$SOURCE_BRANCH" >> "$GITHUB_OUTPUT"
+
+      # 检出 dev 分支（如果不存在则基于源分支创建）
+      - name: Checkout dev branch (create if missing)
+        shell: bash
+        run: |
+          if git ls-remote --exit-code --heads origin dev >/dev/null 2>&1; then
+            git checkout -B dev origin/dev
+          else
+            echo "dev branch does not exist on origin, creating it based on ${{ steps.detect.outputs.name }}"
+            git checkout -B dev "origin/${{ steps.detect.outputs.name }}"
+            git push -u origin dev
+          fi
+
+      # 将源分支合并到 dev
+      - name: Merge source branch into dev
+        shell: bash
+        run: |
+          set -e
+          BASE_BRANCH="${{ steps.detect.outputs.name }}"
+          echo "Merging origin/${BASE_BRANCH} into dev..."
+          git fetch origin "$BASE_BRANCH"
+
+          if git merge --no-edit "origin/${BASE_BRANCH}"; then
+            echo "Merge succeeded."
+          else
+            echo "::error::Merge conflict when merging ${BASE_BRANCH} into dev. Please resolve conflicts manually."
+            git merge --abort || true
+            exit 1
+          fi
+
+      # 推送更新到 dev（如果有新的提交）
+      - name: Push changes to dev (if any)
+        shell: bash
+        run: |
+          if [ -n "$(git log --oneline origin/dev..HEAD)" ]; then
+            echo "Pushing updates to origin/dev..."
+            git push origin dev
+          else
+            echo "No updates needed. dev is already up to date with ${{ steps.detect.outputs.name }}"
+          fi