fix: bump pnpm cache version to invalidate corrupted cache

The CI was restoring an old pnpm store cache that was created with the
corrupted lockfile. By bumping the cache key from v1 (implicit) to v2,
we ensure CI will create a fresh cache with the fixed lockfile.

This resolves the ERR_PNPM_BROKEN_LOCKFILE error that persisted after
the lockfile was regenerated.

Co-authored-by: xuyushun441-sys <255036401+xuyushun441-sys@users.noreply.github.com>

Author: Claude

.github/workflows/ci.yml

@@ -68,9 +68,9 @@ jobs:
         uses: actions/cache@v5
         with:
           path: ${{ env.STORE_PATH }}
-          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          key: ${{ runner.os }}-pnpm-store-v2-${{ hashFiles('**/pnpm-lock.yaml') }}
           restore-keys: |
-            ${{ runner.os }}-pnpm-store-
+            ${{ runner.os }}-pnpm-store-v2-
 
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
@@ -117,9 +117,9 @@ jobs:
         uses: actions/cache@v5
         with:
           path: ${{ env.STORE_PATH }}
-          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          key: ${{ runner.os }}-pnpm-store-v2-${{ hashFiles('**/pnpm-lock.yaml') }}
           restore-keys: |
-            ${{ runner.os }}-pnpm-store-
+            ${{ runner.os }}-pnpm-store-v2-
 
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
@@ -180,9 +180,9 @@ jobs:
         uses: actions/cache@v5
         with:
           path: ${{ env.STORE_PATH }}
-          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          key: ${{ runner.os }}-pnpm-store-v2-${{ hashFiles('**/pnpm-lock.yaml') }}
           restore-keys: |
-            ${{ runner.os }}-pnpm-store-
+            ${{ runner.os }}-pnpm-store-v2-
       
       - name: Setup Next.js cache
         uses: actions/cache@v5