chore: update node and pnpm

.github/workflows/lint.yml

@@ -31,14 +31,15 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v6
+      - name: Set up pnpm
+        uses: pnpm/action-setup@v4
       - name: Set up Node
         uses: actions/setup-node@v6
         with:
-          node-version: '16'
-          cache: yarn
+          node-version: '25.8.1'
+          cache: pnpm
+          cache-dependency-path: pnpm-lock.yaml
       - name: Installation
-        run: yarn
-      - name: Check immutable yarn.lock
-        run: git diff --exit-code
+        run: pnpm install --frozen-lockfile
       - name: Lint
-        run: yarn lint
+        run: pnpm lint

.github/workflows/tsc.yml

@@ -21,17 +21,18 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v6
+      - name: Set up pnpm
+        uses: pnpm/action-setup@v4
       - name: Set up Node
         uses: actions/setup-node@v6
         with:
-          node-version: '16'
-          cache: yarn
+          node-version: '25.8.1'
+          cache: pnpm
+          cache-dependency-path: pnpm-lock.yaml
       - name: Installation
-        run: yarn
-      - name: Check immutable yarn.lock
-        run: git diff --exit-code
+        run: pnpm install --frozen-lockfile
       # Build the shared types in dependent packages.
       - name: Build dependencies
-        run: yarn turbo run build --filter=ui
+        run: pnpm turbo run build --filter=ui
       - name: Typecheck
-        run: yarn tsc
+        run: pnpm tsc