diff --git a/.gitea/workflows/deploy-b9.yml b/.gitea/workflows/deploy-b9.yml
new file mode 100644
index 0000000..55a2178
--- /dev/null
+++ b/.gitea/workflows/deploy-b9.yml
@@ -0,0 +1,105 @@
+name: Deploy B9
+
+on:
+  push:
+    branches:
+      - b9
+  workflow_dispatch:
+    inputs:
+      environment:
+        description: Deployment environment
+        type: choice
+        options:
+          - prod
+          - test
+        default: prod
+        required: true
+
+concurrency:
+  group: deploy-b9
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    runs-on: windows-cross
+    timeout-minutes: 30
+    env:
+      TARGET_ENV: ${{ inputs.environment || 'prod' }}
+      AWS_PAGER: ''
+      AWS_EC2_METADATA_DISABLED: 'true'
+
+    steps:
+      - name: Checkout
+        uses: https://github.com/actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Resolve deployment directory
+        env:
+          DEPLOY_REF: ${{ github.ref }}
+          DEPLOY_BRANCH: ${{ github.ref_name }}
+        run: |
+          set -eu
+          case "$DEPLOY_REF" in
+            refs/heads/*) ;;
+            *) echo "Deployment requires a branch"; exit 1 ;;
+          esac
+          case "$DEPLOY_BRANCH" in
+            main) PROJECT=x8 ;;
+            x9|b9|bd9|bh9) PROJECT="$DEPLOY_BRANCH" ;;
+            *) echo "Unsupported device branch"; exit 1 ;;
+          esac
+          echo "DEPLOY_PROJECT_NAME=$PROJECT" >> "$GITHUB_ENV"
+          echo "Deploying branch $DEPLOY_BRANCH to S3 directory $PROJECT"
+
+      - name: Set up Node.js
+        uses: https://github.com/actions/setup-node@v4
+        with:
+          node-version: '24'
+
+      - name: Install pnpm
+        run: npm install --global pnpm@11.5.2
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build legacy and modern applications
+        env:
+          VITE_AI_API_URL: ${{ vars.VITE_AI_API_URL }}
+        run: |
+          set -eu
+          case "$TARGET_ENV" in
+            prod) pnpm run build ;;
+            test) pnpm run build:test ;;
+            *) echo "Unsupported deployment environment"; exit 1 ;;
+          esac
+          test -s dist/i.html
+          test -s dist/legacy/i.legacy.html
+          test -s dist/modern/i.modern.html
+
+      - name: Install AWS CLI
+        run: |
+          set -eu
+          if ! command -v aws >/dev/null 2>&1; then
+            CLI_DIR=$(mktemp -d)
+            curl --fail --silent --show-error --location \
+              --connect-timeout 20 --max-time 300 \
+              https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip \
+              --output "$CLI_DIR/awscliv2.zip"
+            unzip -q "$CLI_DIR/awscliv2.zip" -d "$CLI_DIR"
+            "$CLI_DIR/aws/install" --install-dir "$CLI_DIR/installed" --bin-dir /usr/local/bin
+          fi
+          aws --version
+
+      - name: Deploy to S3 and invalidate CloudFront
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          AWS_SESSION_TOKEN: ${{ secrets.AWS_SESSION_TOKEN }}
+          AWS_DEFAULT_REGION: ${{ vars.AWS_REGION }}
+        run: |
+          set -eu
+          test -n "$AWS_ACCESS_KEY_ID" || { echo "Missing secret AWS_ACCESS_KEY_ID"; exit 1; }
+          test -n "$AWS_SECRET_ACCESS_KEY" || { echo "Missing secret AWS_SECRET_ACCESS_KEY"; exit 1; }
+          test -n "$AWS_DEFAULT_REGION" || { echo "Missing variable AWS_REGION"; exit 1; }
+          bash scripts/deploy.sh "$TARGET_ENV" -yr
diff --git a/DEPLOYMENT.md b/DEPLOYMENT.md
new file mode 100644
index 0000000..7949085
--- /dev/null
+++ b/DEPLOYMENT.md
@@ -0,0 +1,47 @@
+# B9 自动部署
+
+Gitea workflow 位于 `.gitea/workflows/deploy-b9.yml`。
+
+## 触发方式
+
+- 推送 `b9` 分支：构建正式版，同步到 `s3://luxsin-app-bucket/b9/v2/`，刷新 CloudFront `EUS4XQ8Y0W2ZV` 的 `/b9/v2/*`。
+- Actions 手动运行：可选择 `prod` 或 `test`；测试环境同步到 `s3://luxsin-app-bucket/b9/test/`，刷新 `/b9/test/*`。
+- 使用现有 `windows-cross` Runner（Linux x64 Docker 镜像），安装 Node.js 24、pnpm 11.5.2 和 AWS CLI。
+- 同一时间只运行一个 B9 部署，避免多个同步任务互相覆盖。
+
+## 一次性配置
+
+在实际托管 `b9` 分支的 Gitea 仓库中，进入「设置 → Actions」：
+
+### Secrets
+
+| 名称 | 用途 |
+| --- | --- |
+| `AWS_ACCESS_KEY_ID` | 部署账号的访问密钥 ID |
+| `AWS_SECRET_ACCESS_KEY` | 对应的访问密钥 |
+| `AWS_SESSION_TOKEN` | 仅临时凭据需要；过期后需要更新整组凭据 |
+
+不要提交本机 `.aws` 或把密钥写入 workflow。部署身份应仅有目标桶 `b9/v2/`、`b9/test/` 前缀所需的同步读写删除权限，以及指定 CloudFront 分配的创建失效权限；若存储桶使用自定义 KMS 加密，还需相应 KMS 权限。
+
+### Variables
+
+| 名称 | 用途 |
+| --- | --- |
+| `AWS_REGION` | 填写现有 S3 存储桶所在区域，必填 |
+| `VITE_AI_API_URL` | 生产可访问的 AI 服务地址，可选；未填时使用应用内置默认地址 |
+
+Runner 必须能领取此仓库的任务，并能够访问 GitHub Actions、npm、AWS CLI 下载站、S3 和 CloudFront API。当前本地 origin 为 `https://repo.luxsin.com.cn/audio/controller-v2.git`，需要在这台 Gitea 对应仓库配置 Runner 和上述参数；旧 Gitea 的仓库级 Runner 不会自动跨实例生效。
+
+## 部署规则
+
+复用 `scripts/deploy.sh`，CI 执行 `DEPLOY_PROJECT_NAME=b9 bash scripts/deploy.sh prod -yr`。`-y` 跳过人工确认，`-r` 刷新缓存；本地未加 `-y` 时仍需确认。
+
+默认上传 images，与现有脚本默认行为一致。`aws s3 sync --delete` 会删除目标前缀中本次构建不存在的对象，部署前会校验入口文件避免上传空目录。需要排除 images 的手工部署仍可使用 `-i`。
+
+每次部署会产生 S3 请求和 CloudFront 缓存失效请求，按账号实际用量计费。workflow 不上传或读取本机未跟踪的 `.env`，构建所需公开配置应放入 Actions Variables。
+
+## 分支与型号目录
+
+`main` 对应 `x8`，其余已知型号分支 `x9`、`b9`、`bd9`、`bh9` 使用分支名作为目录。CI 会设置 `DEPLOY_PROJECT_NAME`，构建路径与部署目标保持一致；本地脚本也支持相同映射。
+
+目前自动触发范围仍仅为 `b9`，未扩大其他分支的自动生产部署。其他分支需包含对应 workflow，启用前需确认部署范围；不要覆盖各分支的型号专用代码。AWS 权限也应按实际启用的型号前缀配置。
diff --git a/scripts/deploy.sh b/scripts/deploy.sh
index b348043..3ecfb5f 100755
--- a/scripts/deploy.sh
+++ b/scripts/deploy.sh
@@ -21,6 +21,7 @@ show_help() {
 选项（可合并，如 -ir）:
   -i      排除 images 目录 (*images/*)
   -r      上传完成后刷新 CloudFront 缓存
+  -y      跳过确认（用于 CI）
   -h      显示此帮助
 
 示例:
@@ -32,20 +33,22 @@ show_help() {
 EOF
 }
 
-# 自动识别项目名称 (x8 / x9)，依据脚本所在的项目根目录名
+# CI 显式传入型号；本地按 Git 分支识别，非 Git 目录则回退到目录名。
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJECT_ROOT="$(basename "$(dirname "$SCRIPT_DIR")")"
-PROJECT_NAME="$(echo "$PROJECT_ROOT" | grep -oE '^(x8|x9|b9)')"
-
-if [ -z "$PROJECT_NAME" ]; then
-  echo "错误: 无法从路径 '$PROJECT_ROOT' 识别项目名称 (x8/x9/b9)"
-  exit 1
-fi
+PROJECT_BRANCH="$(git -C "$SCRIPT_DIR" symbolic-ref --quiet --short HEAD 2>/dev/null || true)"
+PROJECT_NAME="${DEPLOY_PROJECT_NAME:-${PROJECT_BRANCH:-${PROJECT_ROOT%-controller}}}"
+case "$PROJECT_NAME" in
+  main) PROJECT_NAME="x8" ;;
+  x8|x9|b9|bd9|bh9) ;;
+  *) echo "错误: 不支持的型号分支 '$PROJECT_NAME'"; exit 1 ;;
+esac
 
 # 解析参数
 TARGET_ENV="prod"
 EXCLUDE_IMAGES=false
 RELOAD=false
+ASSUME_YES=false
 
 for arg in "$@"; do
   case "$arg" in
@@ -70,6 +73,9 @@ for arg in "$@"; do
           i)
             EXCLUDE_IMAGES=true
             ;;
+          y)
+            ASSUME_YES=true
+            ;;
           r)
             RELOAD=true
             ;;
@@ -121,10 +127,21 @@ echo "命令:   ${CMD_ARGS[*]}"
 echo "=========================================="
 echo ""
 
-read -r -p "确认执行部署? 输入 y 继续: " confirm
-if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
-  echo "已取消部署。"
-  exit 0
+# 在项目根目录执行，避免 CI 的当前目录影响同步源。
+cd "$SCRIPT_DIR/.."
+for entry in i.html legacy/i.legacy.html modern/i.modern.html; do
+  if [ ! -s "dist/$entry" ]; then
+    echo "错误: 缺少构建产物 dist/$entry，请先完成构建。"
+    exit 1
+  fi
+done
+
+if [ "$ASSUME_YES" != true ]; then
+  read -r -p "确认执行部署? 输入 y 继续: " confirm
+  if [[ ! "$confirm" =~ ^[Yy]$ ]]; then
+    echo "已取消部署。"
+    exit 0
+  fi
 fi
 
 echo ""
diff --git a/vite.config.ts b/vite.config.ts
index 58a4ad1..046e498 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -53,9 +53,10 @@ const plugins = [
 
 /* ── Deploy base path ── */
 const DEPLOY_ENV = process.env.DEPLOY_ENV || "production";
+const DEPLOY_PROJECT = process.env.DEPLOY_PROJECT_NAME || "b9";
 const isProd = process.env.NODE_ENV === "production";
 const deployBase = isProd
-  ? (DEPLOY_ENV === "test" ? "/b9/test/modern/" : "/b9/v2/modern/")
+  ? (DEPLOY_ENV === "test" ? `/${DEPLOY_PROJECT}/test/modern/` : `/${DEPLOY_PROJECT}/v2/modern/`)
   : "/";
 
 export default defineConfig({
diff --git a/vite.legacy.config.ts b/vite.legacy.config.ts
index 98a7c1a..0807459 100644
--- a/vite.legacy.config.ts
+++ b/vite.legacy.config.ts
@@ -46,9 +46,10 @@ function legacySkipModernCssPlugin(): Plugin {
 
 /* ── Deploy base path ── */
 const DEPLOY_ENV = process.env.DEPLOY_ENV || "production";
+const DEPLOY_PROJECT = process.env.DEPLOY_PROJECT_NAME || "b9";
 const isProd = process.env.NODE_ENV === "production";
 const deployBase = isProd
-  ? (DEPLOY_ENV === "test" ? "/b9/test/legacy/" : "/b9/v2/legacy/")
+  ? (DEPLOY_ENV === "test" ? `/${DEPLOY_PROJECT}/test/legacy/` : `/${DEPLOY_PROJECT}/v2/legacy/`)
   : "/";
 
 export default defineConfig({