build: move from pnpm to npm

Replace pnpm-lock.yaml with package-lock.json. The security overrides move to
package.json#overrides with their range operators intact, so advisory floors
stay floors. allowBuilds becomes package.json#allowScripts where the listed
package is actually in the tree.

.github/workflows/deploy.yml

@@ -22,20 +22,18 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v6
       
-      - name: Setup pnpm
-        uses: pnpm/action-setup@v6
 
       - name: Setup Node
         uses: actions/setup-node@v6
         with:
           node-version: '24'
-          cache: 'pnpm'
+          cache: 'npm'
 
       - name: Install dependencies
-        run: pnpm install --frozen-lockfile
+        run: npm ci
 
       - name: Build
-        run: pnpm build
+        run: npm run build
       
       - name: Setup Pages
         uses: actions/configure-pages@v6

.gitignore

@@ -4,7 +4,7 @@ logs
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
-pnpm-debug.log*
+npm-debug.log*
 lerna-debug.log*
 .
 node_modules

README.md

@@ -17,9 +17,9 @@ Play: [https://tiennm99.github.io/sokoban/](https://tiennm99.github.io/sokoban/)
 ## Development
 
 ```bash
-pnpm install
-pnpm dev          # dev server on http://localhost:8080
-pnpm build        # production build
+npm install
+npm run dev       # dev server on http://localhost:8080
+npm run build     # production build
 ```
 
 ## Project layout

package.json

@@ -3,7 +3,6 @@
   "description": "A simple Sokoban game built with Svelte 5 and Vite",
   "version": "1.0.0",
   "type": "module",
-  "packageManager": "pnpm@11.1.1",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tiennm99/sokoban.git"
@@ -25,5 +24,9 @@
     "svelte": "^5.56.2",
     "vite": "^8.0.16",
     "vite-plugin-pwa": "^1.2.0"
+  },
+  "overrides": {
+    "serialize-javascript": ">=7.0.5",
+    "fast-uri": ">=3.1.2"
   }
 }

pnpm-workspace.yaml

@@ -1,6 +0,0 @@
-allowBuilds:
-  esbuild: true
-
-overrides:
-  serialize-javascript: ">=7.0.5"
-  fast-uri: ">=3.1.2"