ci: 修正 Tailwind CLI 包名并收敛重复的环境准备步骤

Tailwind v4 将 CLI 拆为独立包 @tailwindcss/cli，核心包 tailwindcss
不再注册 bin，导致 npx tailwindcss 报 "could not determine executable
to run"。CI 改为安装 @tailwindcss/cli。

同时将 check 与 build 两个 job 重复的 checkout、镜像、Rust/Node/dx/
tailwind 安装步骤抽到 .gitea/actions/setup 复合 action，顶层 env
统一管理 Rust 镜像配置。AGENTS.md 同步说明 v4 拆包这一坑。

.gitea/actions/setup/action.yml

@@ -0,0 +1,49 @@
+name: Setup toolchain
+description: Checkout + configure Cargo mirror + install Rust, Node, wasm target, Dioxus CLI and Tailwind CSS CLI
+
+runs:
+  using: composite
+  steps:
+    - name: Checkout
+      shell: bash
+      run: |
+        git init
+        git remote add origin https://git.rua.plus/${{ github.repository }}.git
+        git fetch --depth 1 origin ${{ github.sha }}
+        git checkout ${{ github.sha }}
+
+    - name: Configure Cargo mirror
+      shell: bash
+      run: |
+        mkdir -p "$HOME/.cargo"
+        printf '%s\n' '[source.crates-io]' "replace-with = 'rsproxy'" '' "[source.rsproxy]" 'registry = "sparse+https://rsproxy.cn/index/"' > "$HOME/.cargo/config.toml"
+
+    # Rust mirror env (RUSTUP_UPDATE_ROOT / RUSTUP_DIST_SERVER) is inherited
+    # from the top-level workflow env.
+    - name: Install Rust toolchain
+      shell: bash
+      run: |
+        for i in 1 2 3; do
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable && break
+          echo "rustup install attempt $i failed, retrying..."
+          sleep 15
+        done
+        echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+
+    - name: Install Node.js
+      shell: bash
+      run: |
+        apt-get update
+        apt-get install -y nodejs npm
+
+    - name: Install Rust target
+      shell: bash
+      run: rustup target add wasm32-unknown-unknown
+
+    - name: Install Dioxus CLI
+      shell: bash
+      run: cargo install dioxus-cli --locked
+
+    - name: Install Tailwind CSS CLI
+      shell: bash
+      run: npm install -g @tailwindcss/cli

.gitea/workflows/ci.yaml

@@ -14,40 +14,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
-        run: |
-          git init
-          git remote add origin https://git.rua.plus/${{ github.repository }}.git
-          git fetch --depth 1 origin ${{ github.sha }}
-          git checkout ${{ github.sha }}
-
-      - name: Configure Cargo mirror
-        run: |
-          mkdir -p "$HOME/.cargo"
-          printf '%s\n' '[source.crates-io]' "replace-with = 'rsproxy'" '' "[source.rsproxy]" 'registry = "sparse+https://rsproxy.cn/index/"' > "$HOME/.cargo/config.toml"
-
-      - name: Install Rust toolchain
-        run: |
-          for i in 1 2 3; do
-            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable && break
-            echo "rustup install attempt $i failed, retrying..."
-            sleep 15
-          done
-          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
-
-      - name: Install Node.js
-        run: |
-          apt-get update
-          apt-get install -y nodejs npm
-
-      - name: Install Rust target
-        run: rustup target add wasm32-unknown-unknown
-
-      - name: Install Dioxus CLI
-        run: cargo install dioxus-cli --locked
-
-      - name: Install Tailwind CSS CLI
-        run: npm install -g tailwindcss
+      - uses: ./.gitea/actions/setup
 
       - name: Check formatting
         run: cargo fmt -- --check
@@ -64,44 +31,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     needs: check
-    env:
-      RUSTUP_UPDATE_ROOT: https://mirrors.tuna.tsinghua.edu.cn/rustup/rustup
-      RUSTUP_DIST_SERVER: https://mirrors.tuna.tsinghua.edu.cn/rustup
     steps:
-      - name: Checkout
-        run: |
-          git init
-          git remote add origin https://git.rua.plus/${{ github.repository }}.git
-          git fetch --depth 1 origin ${{ github.sha }}
-          git checkout ${{ github.sha }}
-
-      - name: Configure Cargo mirror
-        run: |
-          mkdir -p "$HOME/.cargo"
-          printf '%s\n' '[source.crates-io]' "replace-with = 'rsproxy'" '' "[source.rsproxy]" 'registry = "sparse+https://rsproxy.cn/index/"' > "$HOME/.cargo/config.toml"
-
-      - name: Install Rust toolchain
-        run: |
-          for i in 1 2 3; do
-            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable && break
-            echo "rustup install attempt $i failed, retrying..."
-            sleep 15
-          done
-          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
-
-      - name: Install Node.js
-        run: |
-          apt-get update
-          apt-get install -y nodejs npm
-
-      - name: Install Rust target
-        run: rustup target add wasm32-unknown-unknown
-
-      - name: Install Dioxus CLI
-        run: cargo install dioxus-cli --locked
-
-      - name: Install Tailwind CSS CLI
-        run: npm install -g tailwindcss
+      - uses: ./.gitea/actions/setup
 
       - name: Build release
         run: make build

AGENTS.md

@@ -18,7 +18,7 @@ make clean         # cargo clean + rm public/style.css
 
 - Rust 1.95+ with `wasm32-unknown-unknown` target
 - `dx` CLI (`cargo install dioxus-cli`)
-- `tailwindcss` CLI v4 (standalone binary)
+- `tailwindcss` CLI v4 — install via `npm install -g @tailwindcss/cli` (v4 splits the CLI into its own package; the `tailwindcss` core package has no `bin`), or use the standalone binary
 - PostgreSQL running locally
 
 ## Environment