diff --git a/.github/actions/deploy-cf/action.yml b/.github/actions/deploy-cf/action.yml
index 520d26c..c39322d 100644
--- a/.github/actions/deploy-cf/action.yml
+++ b/.github/actions/deploy-cf/action.yml
@@ -289,9 +289,10 @@ runs:
         key: frontend-node-${{ hashFiles('frontend/package-lock.json') }}
 
     - name: Install worker dependencies
+      if: steps.cache-worker.outputs.cache-hit != 'true'
       working-directory: worker
       shell: bash
-      run: npm install
+      run: npm ci
 
     - name: Build
       working-directory: worker
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index af37f6d..3c27a14 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,8 +22,6 @@ jobs:
           node-version: '22'
           cache: npm
           cache-dependency-path: backend/package-lock.json
-      # 直接缓存 node_modules：better-sqlite3 是原生模块，~/.npm 缓存命中后 npm ci 仍要
-      # 重新解压并下载/编译原生二进制，波动大。命中 node_modules 后直接跳过 npm ci。
       - name: Cache backend node_modules
         id: cache-backend
         uses: actions/cache@v5
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 3214127..c9be148 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -92,8 +92,9 @@ jobs:
           key: frontend-node-${{ hashFiles('frontend/package-lock.json') }}
 
       - name: Install worker dependencies
+        if: steps.cache-worker.outputs.cache-hit != 'true'
         working-directory: worker
-        run: npm install
+        run: npm ci
 
       - name: Build and package
         working-directory: worker
diff --git a/worker/build.js b/worker/build.js
index ceb3e00..986e700 100644
--- a/worker/build.js
+++ b/worker/build.js
@@ -98,7 +98,7 @@ console.log(`  Set OBFUSCATE_FRONTEND=true to enable frontend obfuscation`);
 console.log(`  Set OBFUSCATE_WORKER=true to enable worker obfuscation (may break on Cloudflare)\n`);
 
 console.log(`[${++step}/${totalSteps}] Installing frontend dependencies...`);
-execSync('npm install', { cwd: frontendDir, stdio: 'inherit' });
+execSync('npm ci', { cwd: frontendDir, stdio: 'inherit' });
 
 console.log(`[${++step}/${totalSteps}] Building frontend (base=/admin/)...`);
 execSync('npm run build', {